1
00:00:00,000 --> 00:00:04,969
>> [Daqq tal-mużika]

2
00:00:04,969 --> 00:00:06,010
Rick HOULIHAN: Kull dritt.

3
00:00:06,010 --> 00:00:06,600
Hi, kulħadd.

4
00:00:06,600 --> 00:00:07,670
Jisimni Rick Houlihan.

5
00:00:07,670 --> 00:00:10,330
I'ma Senior Principal
soluzzjonijiet perit fil AWS.

6
00:00:10,330 --> 00:00:14,070
I tiffoka fuq NoSQL u
Teknoloġiji DynamoDB.

7
00:00:14,070 --> 00:00:16,930
Ninsab hawn illum biex jitkellmu ma
inti ftit dwar dawk.

8
00:00:16,930 --> 00:00:18,970
>> Isfond tiegħi huwa
primarjament fil saff data.

9
00:00:18,970 --> 00:00:21,390
I jintefqu nofs iżvilupp tiegħi
karriera kitba database,

10
00:00:21,390 --> 00:00:25,930
aċċess għad-data, soluzzjonijiet
għal diversi applikazzjonijiet.

11
00:00:25,930 --> 00:00:30,000
Stajt ġiet fil Virtualization Cloud
għal madwar 20 sena.

12
00:00:30,000 --> 00:00:33,460
Għalhekk qabel il-Cloud kien il-Cloud,
aħna użati biex sejħa hija computing utilità.

13
00:00:33,460 --> 00:00:37,170
U l-idea kienet, huwa simili
PG & E, inti tħallas għal dak li tuża.

14
00:00:37,170 --> 00:00:38,800
Illum aħna sejħa hija l-sħaba.

15
00:00:38,800 --> 00:00:41,239
>> Iżda matul is-snin, stajt maħduma
għal ftit kumpaniji

16
00:00:41,239 --> 00:00:42,530
inti probabilment ħadthom qatt semgħu.

17
00:00:42,530 --> 00:00:47,470
Imma stajt kkompilata lista ta 'teknika
kisbiet, I raden inti jgħidu.

18
00:00:47,470 --> 00:00:51,620
Għandi tmien privattivi fis-sistemi Cloud
Virtualization, disinn mikroproċessur,

19
00:00:51,620 --> 00:00:54,440
ipproċessar avveniment kumpless,
u oqsma oħrajn ukoll.

20
00:00:54,440 --> 00:00:58,290
>> Allura dawn il-ġranet, I tiffoka l-aktar fuq NoSQL
teknoloġiji u l-ġenerazzjoni li jmiss

21
00:00:58,290 --> 00:00:59,450
database.

22
00:00:59,450 --> 00:01:03,370
U dan huwa ġeneralment dak li jien ser
li jkun hawn nitkellmu miegħek illum madwar.

23
00:01:03,370 --> 00:01:06,030
Allura dak li ghandek tistenna
minn din is-sessjoni,

24
00:01:06,030 --> 00:01:08,254
aħna ser jgħaddu fil-qosor
istorja ta 'ipproċessar tad-data.

25
00:01:08,254 --> 00:01:10,420
Huwa dejjem utli li
jifhmu fejn aħna ġew minn

26
00:01:10,420 --> 00:01:12,400
u għaliex aħna qed fejn ninsabu.

27
00:01:12,400 --> 00:01:15,600
U aħna ser nitkellmu ftit
ftit dwar it-teknoloġija NoSQL

28
00:01:15,600 --> 00:01:17,500
mil-lat fundamentali.

29
00:01:17,500 --> 00:01:19,870
>> Aħna se jsibu rwieħhom xi wħud
l-intern DynamoDB.

30
00:01:19,870 --> 00:01:24,350
DynamoDB ebda flavor AWS tal.

31
00:01:24,350 --> 00:01:27,340
Huwa ġestiti b'mod sħiħ u
Soluzzjoni NoSQL ospitat.

32
00:01:27,340 --> 00:01:32,420
U aħna ser nitkellmu ftit dwar tabella
istruttura, APIs, it-tipi ta 'data, l-indiċi,

33
00:01:32,420 --> 00:01:35,177
u wħud mill-intern
ta 'dik it-teknoloġija DynamoDB.

34
00:01:35,177 --> 00:01:37,760
Aħna ser jsibu rwieħhom xi wħud mill-disinn
mudelli u l-aħjar prattiki.

35
00:01:37,760 --> 00:01:39,968
Aħna ser jitkellmu dwar kif inti
jużaw din it-teknoloġija għal xi

36
00:01:39,968 --> 00:01:41,430
ta 'applikazzjonijiet tal-lum.

37
00:01:41,430 --> 00:01:44,820
U allura aħna ser nitkellmu ftit
dwar l-evoluzzjoni jew l-emerġenza

38
00:01:44,820 --> 00:01:48,980
ta 'paradigma ġdida fl-ipprogrammar
imsejħa applikazzjonijiet kawżata minn xi fatt

39
00:01:48,980 --> 00:01:51,580
u kif DynamoDB jilgħab fil dan ukoll.

40
00:01:51,580 --> 00:01:54,690
U aħna ser tħallik xi ftit ta '
diskussjoni arkitettura referenza

41
00:01:54,690 --> 00:01:59,540
hekk nistgħu nitkellmu dwar xi wħud
l-modi kif inti tista 'tuża DynamoDB.

42
00:01:59,540 --> 00:02:04,116
>> Allura l-ewwel off-- din hija kwistjoni
I tisma 'ħafna huwa, x'hemm database.

43
00:02:04,116 --> 00:02:06,240
Ħafna nies jaħsbu li
taf liema database hija.

44
00:02:06,240 --> 00:02:08,360
Jekk inti Google, tkun taf tara dan.

45
00:02:08,360 --> 00:02:11,675
Huwa sett strutturat ta 'data miżmuma
fil-kompjuter, speċjalment wieħed li

46
00:02:11,675 --> 00:02:13,600
hija aċċessibbli fil-modi varji.

47
00:02:13,600 --> 00:02:16,992
I jissoponi li l-tajjeb
definizzjoni ta 'database moderna.

48
00:02:16,992 --> 00:02:19,450
Imma jien ma bhalu, għaliex
dan jimplika ftit affarijiet.

49
00:02:19,450 --> 00:02:20,935
Dan jimplika istruttura.

50
00:02:20,935 --> 00:02:23,120
U dan jimplika li huwa fuq il-kompjuter.

51
00:02:23,120 --> 00:02:25,750
U databases ma
dejjem jeżistu fuq il-kompjuters.

52
00:02:25,750 --> 00:02:28,020
Databases attwalment teżisti f'ħafna modi.

53
00:02:28,020 --> 00:02:32,000
>> Allura definizzjoni aħjar ta '
database hija xi ħaġa bħal din.

54
00:02:32,000 --> 00:02:34,786
A database organizzata
mekkaniżmu għall-ħażna, il-ġestjoni,

55
00:02:34,786 --> 00:02:35,910
u irkupru ta 'informazzjoni.

56
00:02:35,910 --> 00:02:36,868
Dan huwa minn About.com.

57
00:02:36,868 --> 00:02:42,080
So I bħal dan għaliex verament taħdidiet
dwar database li tkun repożitorju,

58
00:02:42,080 --> 00:02:44,800
repożitorju ta '
informazzjoni, mhux neċessarjament

59
00:02:44,800 --> 00:02:46,780
xi ħaġa li tpoġġi fuq il-kompjuter.

60
00:02:46,780 --> 00:02:49,290
U matul l-istorja, aħna
mhux dejjem kellhom kompjuters.

61
00:02:49,290 --> 00:02:52,110
>> Issa, jekk nistaqsi il-medja
iżviluppatur illum x'hemm

62
00:02:52,110 --> 00:02:54,770
database, li l-risposta niġi.

63
00:02:54,770 --> 00:02:56,070
X'imkien I tista 'twaħħal Jittieħed.

64
00:02:56,070 --> 00:02:56,670
Dritt?

65
00:02:56,670 --> 00:02:58,725
U huwa veru.

66
00:02:58,725 --> 00:02:59,600
Imma hija ħasra.

67
00:02:59,600 --> 00:03:02,700
Minħabba li l-database huwa verament
l-pedament tal-app moderna.

68
00:03:02,700 --> 00:03:04,810
Hu l-fondazzjoni
ta 'kull applikazzjoni.

69
00:03:04,810 --> 00:03:07,240
U kif inti tibni li
database, kif inti istruttura

70
00:03:07,240 --> 00:03:11,750
li d-data se jiddettaw kif dan
applikazzjoni jwettaq kif inti iskala.

71
00:03:11,750 --> 00:03:14,640
>> Allura ħafna xogħol tiegħi llum
qed jittratta ma 'dak

72
00:03:14,640 --> 00:03:17,180
jiġri meta l-iżviluppaturi
dan l-approċċ

73
00:03:17,180 --> 00:03:19,510
u li jkunu ħerġin
ta 'applikazzjoni li

74
00:03:19,510 --> 00:03:24,966
issa huwa ż-żieda lil hinn mill-oriġinali
intenzjoni u tbatija mid-disinn ħażin.

75
00:03:24,966 --> 00:03:26,840
Allura nisperaw meta inti
walk away illum, inti ser

76
00:03:26,840 --> 00:03:29,010
jkollhom koppja ta 'għodod
ċinturin tiegħek li ser iżommok

77
00:03:29,010 --> 00:03:32,566
milli jagħmlu dawn l-istess żbalji.

78
00:03:32,566 --> 00:03:33,066
Kull dritt.

79
00:03:33,066 --> 00:03:36,360
Mela ejja nitkellmu dwar xi ftit ta '
il-preżentazzjoni kronoliġika ta 'teknoloġija database.

80
00:03:36,360 --> 00:03:38,830
I think I jaqra
artikolu ma li ilu

81
00:03:38,830 --> 00:03:43,020
u qal xi ħaġa fuq il-lines--
huwa stqarrija poetika ħafna.

82
00:03:43,020 --> 00:03:46,590
Hija qal li l-istorja
ta 'ipproċessar tad-dejta huwa

83
00:03:46,590 --> 00:03:49,350
sħiħa ta 'watermarks għolja
ta 'abbundanza data.

84
00:03:49,350 --> 00:03:49,920
KOLLOX SEW.

85
00:03:49,920 --> 00:03:52,532
Issa, I raden dan huwa tip ta 'veru.

86
00:03:52,532 --> 00:03:54,990
Imma I attwalment tħares lejn jiġifieri bħala
l-istorja hija verament timtela

87
00:03:54,990 --> 00:03:56,820
ma watermark għolja ta 'pressjoni data.

88
00:03:56,820 --> 00:04:00,040
Minħabba li l-rata ta 'data ta'
inġestjoni qatt jinżel.

89
00:04:00,040 --> 00:04:01,360
Hija biss tmur up.

90
00:04:01,360 --> 00:04:03,670
>> U l-innovazzjoni sseħħ meta
naraw pressjoni tad-data, li

91
00:04:03,670 --> 00:04:07,825
huwa l-ammont ta 'data li hija
issa fil ġejjin fis-sistema.

92
00:04:07,825 --> 00:04:12,027
U ma jistax jiġi pproċessat
effiċjenti kemm fiż-żmien jew fl-ispiża.

93
00:04:12,027 --> 00:04:14,110
U li meta nibdew
li tħares lejn pressjoni data.

94
00:04:14,110 --> 00:04:15,920
>> Allura meta nħarsu lejn l-
ewwel database, dan

95
00:04:15,920 --> 00:04:17,180
hija dik li kienet bejn widnejn tagħna.

96
00:04:17,180 --> 00:04:18,310
Aħna kollha mwielda magħha.

97
00:04:18,310 --> 00:04:19,194
Huwa database sbieħ.

98
00:04:19,194 --> 00:04:21,110
Hija għandha disponibbiltà għolja.

99
00:04:21,110 --> 00:04:21,959
Huwa dejjem fuq.

100
00:04:21,959 --> 00:04:23,930
Inti tista 'dejjem tikseb dan.

101
00:04:23,930 --> 00:04:24,890
>> Imma hija utent wieħed.

102
00:04:24,890 --> 00:04:26,348
I ma tista 'taqsam ħsibijiet tiegħi miegħek.

103
00:04:26,348 --> 00:04:28,370
Inti ma tistax tikseb ħsibijiet tiegħi
meta inti tixtieq.

104
00:04:28,370 --> 00:04:30,320
U abilitiy tagħhom ma jkunx hekk tajjeb.

105
00:04:30,320 --> 00:04:32,510
Ninsew affarijiet.

106
00:04:32,510 --> 00:04:36,540
U mbagħad kull issa, wieħed minna weraq
u timxi fuq l-eżistenza ieħor

107
00:04:36,540 --> 00:04:39,110
u aħna jitilfu kollox
li kienet f'dak database.

108
00:04:39,110 --> 00:04:40,640
Allura dak li mhux kollha li tajba.

109
00:04:40,640 --> 00:04:43,189
>> U dan ħadem tajjeb matul iż-żmien
meta konna lura fil-ġurnata

110
00:04:43,189 --> 00:04:46,230
meta kollox aħna verament bżonn tkun taf
fejn huma aħna se jmorru fuq għada

111
00:04:46,230 --> 00:04:49,630
jew fejn aħna niġbru l-ikel aħjar.

112
00:04:49,630 --> 00:04:52,820
Imma kif aħna bdew jikbru bħala
ċivilizzazzjoni u l-gvern beda

113
00:04:52,820 --> 00:04:55,152
li jiġu stabbiliti, u
negozji bdew jevolvu,

114
00:04:55,152 --> 00:04:57,360
aħna bdew jirrealizzaw aħna
bżonn ta 'ftit aktar minn dak

115
00:04:57,360 --> 00:04:58,210
nistgħu tpoġġi fir-ras tagħna.

116
00:04:58,210 --> 00:04:58,870
Kull dritt?

117
00:04:58,870 --> 00:05:00,410
>> Għandna bżonn sistemi ta 'rekord.

118
00:05:00,410 --> 00:05:02,220
Aħna meħtieġa postijiet li jkunu jaħżen id-data kapaċi.

119
00:05:02,220 --> 00:05:05,450
Allura bdejna dokumenti bil-miktub,
ħolqien libreriji u arkivji.

120
00:05:05,450 --> 00:05:08,000
Bdejna iżvilupp ta '
sistema ta 'kontabilità ktieb.

121
00:05:08,000 --> 00:05:12,200
U li s-sistema ta 'għadd ktieb
dam id-dinja għal ħafna sekli,

122
00:05:12,200 --> 00:05:15,580
u forsi anki millenji bħala
aħna tip ta 'kiber sal-punt

123
00:05:15,580 --> 00:05:18,420
fejn dik it-tagħbija data qabeż
l-abbiltà ta 'dawk is-sistemi

124
00:05:18,420 --> 00:05:19,870
biex ikunu jistgħu jikkontrollawha.

125
00:05:19,870 --> 00:05:22,070
>> U dan fil-fatt ġara fl-1880s.

126
00:05:22,070 --> 00:05:22,570
Dritt?

127
00:05:22,570 --> 00:05:24,390
Fil-1880 US Census.

128
00:05:24,390 --> 00:05:26,976
Dan huwa verament fejn l tidwir
punt ipproċessar tad-data modern.

129
00:05:26,976 --> 00:05:28,850
Dan huwa l-punt
li l-ammont ta 'data

130
00:05:28,850 --> 00:05:32,060
li kien qed jinġabar mill-
Gvern Amerikan ltqajna sal-punt

131
00:05:32,060 --> 00:05:34,005
fejn hija ħadet tmien snin għall-proċess.

132
00:05:34,005 --> 00:05:36,350
>> Issa, tmien years-- bħala
tafu, iċ-ċensiment

133
00:05:36,350 --> 00:05:39,180
runs kull years-- 10 hekk huwa
pjuttost ovvju li mill-ħin aħna

134
00:05:39,180 --> 00:05:41,419
ltqajna l-ċensiment 1890,
l-ammont ta 'data li

135
00:05:41,419 --> 00:05:43,210
kienet se tiġi pproċessata
mill-gvern kien

136
00:05:43,210 --> 00:05:46,335
ser jaqbżu l-10 snin li
jieħdu biex nieda-ċensiment ġdid.

137
00:05:46,335 --> 00:05:47,250
Din kienet problema.

138
00:05:47,250 --> 00:05:49,000
>> Allura Guy msemmija Herman
Hollerith daħlet tul

139
00:05:49,000 --> 00:05:52,640
u huwa inventat unità rekord punch
karti, qarrej tal-karta punch, punch card

140
00:05:52,640 --> 00:05:58,420
tabulator, u l-kollazzjoni ta '
il-mekkaniżmi għall din it-teknoloġija.

141
00:05:58,420 --> 00:06:01,860
U dik il-kumpannija li hu ffurmat fl-
ħin, flimkien ma 'koppja ta' oħrajn,

142
00:06:01,860 --> 00:06:05,450
fil-fatt sar wieħed mill-pilastri ta '
kumpanija żgħira nafu llum tissejjaħ IBM.

143
00:06:05,450 --> 00:06:08,417
>> Allura IBM oriġinarjament kienet fil
in-negozju database.

144
00:06:08,417 --> 00:06:09,750
U li verament x'għamlu.

145
00:06:09,750 --> 00:06:11,110
Huma ma proċessar ta 'data.

146
00:06:11,110 --> 00:06:15,400
>> Hekk l-proliferazzjoni ta 'punch
karti, AN mekkaniżmi inġenjuża

147
00:06:15,400 --> 00:06:18,560
li tkun tista 'lieva li
teknoloġija biex poll settijiet riżultat magħżula.

148
00:06:18,560 --> 00:06:20,726
Tista 'tara fil din l-istampa
hemm aħna għandna little--

149
00:06:20,726 --> 00:06:23,970
huwa ftit small-- imma int tista 'tara
mekkaniżmu mekkaniku inġenjuża ħafna

150
00:06:23,970 --> 00:06:26,970
fejn għandna gverta punch card.

151
00:06:26,970 --> 00:06:28,720
U t-teħid ta 'xi ħadd
tornavit ftit

152
00:06:28,720 --> 00:06:31,400
u teħel permezz tal-
slots u irfigħ up

153
00:06:31,400 --> 00:06:34,820
li tikseb li jaqblu, li
riżultati magħżula stabbiliti.

154
00:06:34,820 --> 00:06:36,270
>> Din hija aggregazzjoni.

155
00:06:36,270 --> 00:06:38,690
Aħna nagħmlu dan il-ħin kollu
illum fil-kompjuter,

156
00:06:38,690 --> 00:06:40,100
fejn inti tagħmel dan fid-database.

157
00:06:40,100 --> 00:06:41,620
We użati biex tagħmel dan manwalment, id-dritt?

158
00:06:41,620 --> 00:06:42,994
Nies tpoġġi dawn l-affarijiet flimkien.

159
00:06:42,994 --> 00:06:45,440
U kien il-proliferazzjoni
ta 'dawn punch cards

160
00:06:45,440 --> 00:06:50,070
fis-dak we called drums data
u bobini data, tejp tal-karta.

161
00:06:50,070 --> 00:06:55,980
>> L-industrija tal-ipproċessar tad-data ħa
lezzjoni mill-pjanijiet player.

162
00:06:55,980 --> 00:06:57,855
Player Pjanijiet lura lejn
l-bidu tas-seklu

163
00:06:57,855 --> 00:07:02,100
użati għall-użu irkiekel karta bil slots
fuq li tgħid dan li ċwievet biex jilgħabu.

164
00:07:02,100 --> 00:07:05,380
Allura li t-teknoloġija kienet adattata
eventwalment biex jaħżnu data diġitali,

165
00:07:05,380 --> 00:07:08,070
għax dawn ikunu jistgħu jitqiegħdu dik id-dejta
fuq dawk irkiekel tape tal-karta.

166
00:07:08,070 --> 00:07:10,870
>> Issa, bħala riżultat, data
kien actually-- kif

167
00:07:10,870 --> 00:07:14,960
inti aċċess għal din id-data kienet direttament
dipendenti fuq kif inti maħżuna fih.

168
00:07:14,960 --> 00:07:17,825
Mela jekk nressaq id-data fuq tejp,
Kelli aċċess għad-data b'mod lineari.

169
00:07:17,825 --> 00:07:20,475
I kellhom roll-totalità
tejp aċċess għad-data kollha.

170
00:07:20,475 --> 00:07:22,600
Jekk nressaq id-data fil punch
karti, I jistgħu jkollhom aċċess għaliha

171
00:07:22,600 --> 00:07:26,270
fi ftit aktar każwali
moda, forsi mhux bħala malajr.

172
00:07:26,270 --> 00:07:30,770
>> Iżda kien hemm limitazzjonijiet fil-mod kif aħna
aċċess għal data bbażata fuq kif kien maħżun.

173
00:07:30,770 --> 00:07:32,890
U għalhekk din kienet problema
nidħlu l '50s.

174
00:07:32,890 --> 00:07:37,890
Għal darb'oħra, nistgħu tibda tara li kif aħna
jiġu żviluppati teknoloġiji ġodda biex jipproċessaw

175
00:07:37,890 --> 00:07:41,670
id-data, id-dritt, jiftaħ
il-bieb għal soluzzjonijiet ġodda,

176
00:07:41,670 --> 00:07:45,852
għal programmi ġodda, ġodda
applikazzjonijiet għal dik id-dejta.

177
00:07:45,852 --> 00:07:47,810
U tassew, il-governanza
seta 'kien ir-raġuni

178
00:07:47,810 --> 00:07:49,435
għaliex aħna żviluppati xi wħud minn dawn is-sistemi.

179
00:07:49,435 --> 00:07:52,290
Iżda in-negozju saret malajr
is-sewwieq wara l-evoluzzjoni

180
00:07:52,290 --> 00:07:54,720
tad-database moderna u
is-sistema fajl moderna.

181
00:07:54,720 --> 00:07:56,870
>> Allura l-ħaġa li jmiss li
ħarāu kien fl-'50s

182
00:07:56,870 --> 00:08:00,780
kien il-fajl sistema u l-
iżvilupp ta 'ħażna aċċess bl-addoċċ.

183
00:08:00,780 --> 00:08:02,050
Dan kien sbieħ.

184
00:08:02,050 --> 00:08:06,230
Issa, kollha f'daqqa, nistgħu npoġġu tagħna
fajls kullimkien fuq dawn hard drives

185
00:08:06,230 --> 00:08:09,760
u nistgħu aċċess għal din id-data bl-addoċċ.

186
00:08:09,760 --> 00:08:11,950
Nistgħu parse li
informazzjoni minn fajls.

187
00:08:11,950 --> 00:08:14,920
U aħna solvuti l-Dinja
problemi bil ipproċessar tad-data.

188
00:08:14,920 --> 00:08:17,550
>> U li damet madwar 20 jew
30 sena sakemm l-evoluzzjoni

189
00:08:17,550 --> 00:08:22,100
tad-database relazzjonali, li
huwa meta d-dinja iddeċieda aħna issa

190
00:08:22,100 --> 00:08:27,940
jeħtieġ li jkun hemm repożitorju li tkisser
l tifrix ta 'data min-fajl

191
00:08:27,940 --> 00:08:29,540
sistemi li konna mibnija. Dritt?

192
00:08:29,540 --> 00:08:34,270
Wisq data mqassma f'ħafna wisq
postijiet, l-de-duplikazzjoni tad-dejta,

193
00:08:34,270 --> 00:08:37,120
u l-ispiża tal-ħażna kien enormi.

194
00:08:37,120 --> 00:08:43,760
>> Fil-'70s, l-aktar riżors għoljin
li l-kompjuter kellhom kien il-ħażna.

195
00:08:43,760 --> 00:08:46,200
Il-proċessur kien
meqjusa bħala spiża fissa.

196
00:08:46,200 --> 00:08:49,030
Meta I jixtru l-kaxxa,
l-CPU ma xi xogħol.

197
00:08:49,030 --> 00:08:51,960
Li għaddej biex jiġu għażil jekk
huwa attwalment jaħdmu jew le.

198
00:08:51,960 --> 00:08:53,350
Li verament spiża għereq.

199
00:08:53,350 --> 00:08:56,030
>> Imma dak jiswieli bħala
negozju huma l-ħażna.

200
00:08:56,030 --> 00:09:00,020
Jekk irrid jixtri aktar diski li jmiss
xahar, li l-ispiża reali li jħallsu I.

201
00:09:00,020 --> 00:09:01,620
U li l-ħżin hija għalja.

202
00:09:01,620 --> 00:09:05,020
>> Issa aħna fast quddiem 40 sena
u għandna problema differenti.

203
00:09:05,020 --> 00:09:10,020
Il jikkomputa issa l huwa
riżors aktar għoljin.

204
00:09:10,020 --> 00:09:11,470
Il-ħażna huwa rħis.

205
00:09:11,470 --> 00:09:14,570
I mean, nistgħu mmorru kullimkien fuq il-
sħaba u nistgħu nsibu ħażna cheap.

206
00:09:14,570 --> 00:09:17,190
Imma dak I ma tistax issib huwa jikkomputa cheap.

207
00:09:17,190 --> 00:09:20,700
>> Allura l-evoluzzjoni tal-lum
teknoloġija, tat-teknoloġija database,

208
00:09:20,700 --> 00:09:23,050
huwa verament iffokat madwar
databases mqassma

209
00:09:23,050 --> 00:09:26,960
li ma jsofrux minn
l-istess tip ta 'skala

210
00:09:26,960 --> 00:09:29,240
limitazzjonijiet ta 'databases relazzjonali.

211
00:09:29,240 --> 00:09:32,080
Aħna ser nitkellmu ftit dwar
dak li effettivament tfisser.

212
00:09:32,080 --> 00:09:34,760
>> Iżda wieħed mir-raġunijiet u
is-sewwieq wara this-- aħna

213
00:09:34,760 --> 00:09:38,290
tkellem dwar il-pressjoni tad-data.

214
00:09:38,290 --> 00:09:41,920
Pressjoni tad-data hija xi ħaġa
li drives innovazzjoni.

215
00:09:41,920 --> 00:09:44,610
U jekk inti tħares lejn aktar
l-aħħar ħames snin,

216
00:09:44,610 --> 00:09:48,180
dan huwa chart ta 'dak id-data
tagħbija madwar l-intrapriża ġenerali

217
00:09:48,180 --> 00:09:49,640
Dehra fl-aħħar ħames snin.

218
00:09:49,640 --> 00:09:52,570
>> U r-regola ġenerali ta 'thumb
dawn days-- jekk inti tmur Google--

219
00:09:52,570 --> 00:09:55,290
huwa 90% tad-data li
aħna maħżen llum, u kien

220
00:09:55,290 --> 00:09:57,330
iġġenerat matul l-aħħar sentejn.

221
00:09:57,330 --> 00:09:57,911
KOLLOX SEW.

222
00:09:57,911 --> 00:09:59,410
Issa, dan mhuwiex xejra li l-ġdida.

223
00:09:59,410 --> 00:10:01,230
Din hija tendenza li kien
ser jispiċċaw għal 100 sena.

224
00:10:01,230 --> 00:10:03,438
Minn mindu Herman Hollerith
żviluppat il-karta punch,

225
00:10:03,438 --> 00:10:08,040
aħna kont qed jibni repożitorji tad-dejta
u l-ġbir tad-data b'rati fenomenali.

226
00:10:08,040 --> 00:10:10,570
>> Allura matul l-aħħar 100 sena,
Rajna din it-tendenza.

227
00:10:10,570 --> 00:10:11,940
Li mhux se jibdlu.

228
00:10:11,940 --> 00:10:14,789
Miexi 'l quddiem, aħna qed tmur biex tara
dan, jekk mhux xejra mgħaġġla.

229
00:10:14,789 --> 00:10:16,330
U inti tista tara dak li qisu.

230
00:10:16,330 --> 00:10:23,510
>> Jekk negozju fl-2010 kienet waħda
terabyte ta 'data mmaniġġjati,

231
00:10:23,510 --> 00:10:27,080
illum dan ifisser li qed
ġestjoni 6.5 petabytes ta 'data.

232
00:10:27,080 --> 00:10:30,380
C'est 6,500 data darbiet aktar.

233
00:10:30,380 --> 00:10:31,200
U naf dan.

234
00:10:31,200 --> 00:10:33,292
I taħdem ma 'dawn in-negozji kull jum.

235
00:10:33,292 --> 00:10:35,000
Ħames snin ilu, I
tkellem kumpaniji

236
00:10:35,000 --> 00:10:38,260
li tkellem lili dwar dak uġigħ
huwa li jamministraw terabytes ta 'data.

237
00:10:38,260 --> 00:10:39,700
U kieku jitkellmu
lili dwar kif naraw

238
00:10:39,700 --> 00:10:41,825
li dan huwa probabbilment se
li jkun petabyte jew tnejn

239
00:10:41,825 --> 00:10:43,030
fi żmien ftit snin.

240
00:10:43,030 --> 00:10:45,170
>> Dawn l-istess kumpaniji
illum jien laqgħa ma,

241
00:10:45,170 --> 00:10:48,100
u dawn qed jitkellem lili dwar l-
problema qed ikollhom hemm ġestjoni

242
00:10:48,100 --> 00:10:51,440
għexieren, 20 petabytes ta 'data.

243
00:10:51,440 --> 00:10:53,590
Allura l-isplużjoni tal-
data fl-industrija

244
00:10:53,590 --> 00:10:56,670
qiegħed isuq il-enormi
bżonn għal soluzzjonijiet aħjar.

245
00:10:56,670 --> 00:11:00,980
U d-database relazzjonali hija
biss ma tilħaqx l-domanda.

246
00:11:00,980 --> 00:11:03,490
>> U hekk hemm lineari
korrelazzjoni bejn pressjoni data

247
00:11:03,490 --> 00:11:05,210
u l-innovazzjoni teknika.

248
00:11:05,210 --> 00:11:07,780
L-istorja wriet us
dan, li maż-żmien,

249
00:11:07,780 --> 00:11:11,090
kull meta l-volum ta 'data
li jeħtieġ li jiġu pproċessati

250
00:11:11,090 --> 00:11:15,490
jeċċedi l-kapaċità tas-sistema
biex tiġi pproċessata fi żmien raġonevoli

251
00:11:15,490 --> 00:11:18,870
jew bi prezz raġonevoli,
teknoloġiji allura ġodda

252
00:11:18,870 --> 00:11:21,080
huma ivvintati biex isolvu dawn il-problemi.

253
00:11:21,080 --> 00:11:24,090
Dawk it-teknoloġiji ġodda,
imbagħad, tiftaħ il-bieb

254
00:11:24,090 --> 00:11:27,840
li sett ieħor ta 'problemi, li
huwa ġbir aktar fatti.

255
00:11:27,840 --> 00:11:29,520
>> Issa, aħna mhux se tieqaf din.

256
00:11:29,520 --> 00:11:30,020
Dritt?

257
00:11:30,020 --> 00:11:31,228
Aħna mhux se tieqaf din.

258
00:11:31,228 --> 00:11:31,830
Għaliex?

259
00:11:31,830 --> 00:11:35,520
Għaliex inti ma tistax tkun taf kollox
hemm li jkunu jafu fl-univers.

260
00:11:35,520 --> 00:11:40,510
U sakemm aħna kont qed ħaj,
matul l-istorja tal-bniedem,

261
00:11:40,510 --> 00:11:43,440
aħna dejjem misjuqa tkun taf aktar.

262
00:11:43,440 --> 00:11:49,840
>> Għalhekk jidher li huwa simili kull pulzier nimxu
fit-triq ta 'skoperta xjentifika,

263
00:11:49,840 --> 00:11:54,620
aħna multiplikazzjoni tal-ammont ta 'data
li għandna bżonn biex jipproċessaw b'mod esponenzjali

264
00:11:54,620 --> 00:11:59,920
kif aħna tikxef aktar u aktar u aktar
dwar il-ħidma ta 'ġewwa tal-ħajja,

265
00:11:59,920 --> 00:12:04,530
dwar kif jaħdem l-univers, dwar
sewqan tal-iskoperta xjentifika,

266
00:12:04,530 --> 00:12:06,440
u l-invenzjoni li
aħna qed nagħmlu llum.

267
00:12:06,440 --> 00:12:09,570
Il-volum ta 'data biss
tiżdied kontinwament.

268
00:12:09,570 --> 00:12:12,120
Allura li jkunu jistgħu jittrattaw
din il-problema huwa enormi.

269
00:12:12,120 --> 00:12:14,790

270
00:12:14,790 --> 00:12:17,410
>> Allura wieħed mill-affarijiet
aħna nħarsu kif għaliex NoSQL?

271
00:12:17,410 --> 00:12:19,200
Kif ma NoSQL ssolvi din il-problema?

272
00:12:19,200 --> 00:12:24,980
Ukoll, databases relazzjonali,
Strutturat Mistoqsija Lingwa,

273
00:12:24,980 --> 00:12:28,600
SQL-- li tassew tibni tal-
relazzjonali database-- dawn l-affarijiet huma

274
00:12:28,600 --> 00:12:30,770
ottimizzati għall-ħażna.

275
00:12:30,770 --> 00:12:33,180
>> Lura fl-'70s, għal darb'oħra,
disk hija għalja.

276
00:12:33,180 --> 00:12:36,990
L-eżerċizzju proviżjonament ta 'ħażna
fl-intrapriża hija ma jintemmu qatt.

277
00:12:36,990 --> 00:12:37,490
Naf.

278
00:12:37,490 --> 00:12:38,020
I għexu fiha.

279
00:12:38,020 --> 00:12:41,250
I kiteb sewwieqa ħażna għal
kumpanija superserver enterprised

280
00:12:41,250 --> 00:12:42,470
lura fil-snin 90.

281
00:12:42,470 --> 00:12:45,920
U l-linja tal-qiegħ huwa tiswib ieħor
firxa ħażna kien biss xi ħaġa li

282
00:12:45,920 --> 00:12:47,600
ġara kull jum fl-intrapriża.

283
00:12:47,600 --> 00:12:49,030
U qatt ma waqfet.

284
00:12:49,030 --> 00:12:52,690
, Ħażna densità ogħla domanda
għall-ħażna densità għolja,

285
00:12:52,690 --> 00:12:56,340
u għall-ħażna aktar effiċjenti
devices-- huwa qatt ma waqfet.

286
00:12:56,340 --> 00:13:00,160
>> U NoSQL hija teknoloġija kbir
minħabba li normalizes-data.

287
00:13:00,160 --> 00:13:02,210
Hija de-duplikati-data.

288
00:13:02,210 --> 00:13:07,180
Huwa jpoġġi l-informazzjoni fi struttura li
huwa agnostic li kull mudell aċċess.

289
00:13:07,180 --> 00:13:11,600
Applikazzjonijiet multipli jistgħu hit li
Database SQL, run mistoqsijiet ad hoc,

290
00:13:11,600 --> 00:13:15,950
u jiksbu data fil-forma li huma
bżonn biex jipproċessaw għal xogħolhom tagħhom.

291
00:13:15,950 --> 00:13:17,570
Ħsejjes meraviljuż.

292
00:13:17,570 --> 00:13:21,350
Iżda l-bottom line huwa ma 'kwalunkwe
sistema, jekk huwa agnostic li kollox,

293
00:13:21,350 --> 00:13:23,500
huwa ottimizzati għal xejn.

294
00:13:23,500 --> 00:13:24,050
KOLLOX SEW?

295
00:13:24,050 --> 00:13:26,386
>> U dan huwa dak li nagħmlu ma '
database relazzjonali.

296
00:13:26,386 --> 00:13:27,510
Huwa ottimizzati għall-ħażna.

297
00:13:27,510 --> 00:13:28,280
Huwa normalizzat.

298
00:13:28,280 --> 00:13:29,370
Huwa relazzjonali.

299
00:13:29,370 --> 00:13:31,660
Hija tappoġġa l-mistoqsijiet ad hoc.

300
00:13:31,660 --> 00:13:34,000
U dan u skali vertikalment.

301
00:13:34,000 --> 00:13:39,030
>> I Jekk bżonn li tikseb database SQL akbar
jew database SQL aktar qawwija,

302
00:13:39,030 --> 00:13:41,090
I jmorru jixtru biċċa akbar ta 'ħadid.

303
00:13:41,090 --> 00:13:41,600
KOLLOX SEW?

304
00:13:41,600 --> 00:13:44,940
Stajt ħadem ma 'lott ta' klijenti
li ġew permezz titjib maġġuri

305
00:13:44,940 --> 00:13:48,340
fl-infrastruttura SQL tagħhom biss
biex issir taf sitt xhur wara,

306
00:13:48,340 --> 00:13:49,750
dawn qed tolqot il-ħajt mill-ġdid.

307
00:13:49,750 --> 00:13:55,457
U r-risposta mill Oracle jew MSSQL
jew xi ħadd ieħor hu li tikseb kaxxa akbar.

308
00:13:55,457 --> 00:13:58,540
Ukoll illum jew għada, inti ma tistax tixtri
akbar kaxxa, u li l-problema reali.

309
00:13:58,540 --> 00:14:00,080
Għandna bżonn li attwalment ibiddlu l-affarijiet.

310
00:14:00,080 --> 00:14:01,080
Għalhekk, fejn ma dan ix-xogħol?

311
00:14:01,080 --> 00:14:06,560
Hija taħdem ukoll għall offline
analytics, loads tat-tip OLAP.

312
00:14:06,560 --> 00:14:08,670
U li verament fejn SQL jappartjeni.

313
00:14:08,670 --> 00:14:12,540
Issa, huwa użat illum f'ħafna online
Tip ipproċessar transazzjonali

314
00:14:12,540 --> 00:14:13,330
applikazzjonijiet.

315
00:14:13,330 --> 00:14:16,460
U taħdem biss multa fuq
xi livell ta 'utilizzazzjoni,

316
00:14:16,460 --> 00:14:18,670
iżda hija biss ma 'skala
il-mod li NoSQL ma.

317
00:14:18,670 --> 00:14:20,660
U aħna ser nitkellmu ftit
ftit dwar għaliex dan huwa.

318
00:14:20,660 --> 00:14:23,590
>> Issa, NoSQL, min-naħa l-oħra,
huwa aktar ottimizzati għall jikkomputa.

319
00:14:23,590 --> 00:14:24,540
KOLLOX SEW?

320
00:14:24,540 --> 00:14:26,830
Mhuwiex agnostic li
il-mudell aċċess.

321
00:14:26,830 --> 00:14:31,620
Hu dak li nsejħu de-normalizzat
istruttura jew struttura ġerarkika.

322
00:14:31,620 --> 00:14:35,000
Id-data fid-database relazzjonali hija
magħquda flimkien mit-tabelli multipli

323
00:14:35,000 --> 00:14:36,850
biex jipproduċu l-opinjoni li għandek bżonn.

324
00:14:36,850 --> 00:14:40,090
Id-data f'database NoSQL
hija maħżuna f'dokument li

325
00:14:40,090 --> 00:14:42,100
fiha struttura ġerarkika.

326
00:14:42,100 --> 00:14:45,670
Kollha tad-data li normalment tkun
magħquda flimkien biex jipproduċi dak fehma

327
00:14:45,670 --> 00:14:47,160
hija maħżuna f'dokument wieħed.

328
00:14:47,160 --> 00:14:50,990
U aħna ser nitkellmu ftit dwar
kif din taħdem fi ftit charts.

329
00:14:50,990 --> 00:14:55,320
>> Iżda l-idea hawnhekk hija li inti taħżen
data tiegħek bħala dawn l-opinjonijiet instantiated.

330
00:14:55,320 --> 00:14:56,410
KOLLOX SEW?

331
00:14:56,410 --> 00:14:58,610
Inti iskala orizzontalment.

332
00:14:58,610 --> 00:14:59,556
Dritt?

333
00:14:59,556 --> 00:15:02,100
I Jekk bżonn li tiżdied il-
daqs tal cluster NoSQL tiegħi,

334
00:15:02,100 --> 00:15:03,700
I m'għandhomx bżonn li tikseb kaxxa akbar.

335
00:15:03,700 --> 00:15:05,200
I nikseb ieħor kaxxa.

336
00:15:05,200 --> 00:15:07,700
U jien cluster flimkien,
u nista 'shard dik id-data.

337
00:15:07,700 --> 00:15:10,780
Aħna ser nitkellmu ftit dwar
dak sharding huwa, li jkun

338
00:15:10,780 --> 00:15:14,270
kapaċi iskala dik id-database
bejn mezzi fiżiċi multipli

339
00:15:14,270 --> 00:15:18,370
u neħħi l-ostakolu li
teħtieġ me għall-iskala vertikalment.

340
00:15:18,370 --> 00:15:22,080
>> Allura huwa verament mibnija għall-onlajn
ipproċessar tat-transazzjoni u l-iskala.

341
00:15:22,080 --> 00:15:25,480
Hemm distinzjoni big
hawn bejn ir-rappurtar, id-dritt?

342
00:15:25,480 --> 00:15:27,810
Rappurtar, I do not know il
mistoqsijiet jien ser jistaqsu.

343
00:15:27,810 --> 00:15:28,310
Dritt?

344
00:15:28,310 --> 00:15:30,570
Reporting-- jekk xi ħadd mill
dipartiment tal-marketing tiegħi

345
00:15:30,570 --> 00:15:34,520
jixtieq li just-- kif ħafna mill-klijenti tiegħi
jkollhom din il-karatteristika partikolari li

346
00:15:34,520 --> 00:15:37,850
mixtrija fuq dan day-- I do not know
dak mistoqsija li qed tmur biex jistaqsu.

347
00:15:37,850 --> 00:15:39,160
So I jeħtieġ li tkun agnostic.

348
00:15:39,160 --> 00:15:41,810
>> Issa, fil-online
applikazzjoni transazzjonali,

349
00:15:41,810 --> 00:15:43,820
Naf liema mistoqsijiet li jien tistaqsi.

350
00:15:43,820 --> 00:15:46,581
I mibnija l-applikazzjoni għall
workflow speċifiċi ħafna.

351
00:15:46,581 --> 00:15:47,080
KOLLOX SEW?

352
00:15:47,080 --> 00:15:50,540
Mela jekk jien jottimizzaw id-data
jaħżnu biex issostni dik workflow,

353
00:15:50,540 --> 00:15:52,020
li għaddej biex jkun aktar mgħaġġel.

354
00:15:52,020 --> 00:15:55,190
U hu għalhekk li NoSQL tista
verament tħaffef it-twassil

355
00:15:55,190 --> 00:15:57,710
ta 'dawk it-tipi ta' servizzi.

356
00:15:57,710 --> 00:15:58,210
Kull dritt.

357
00:15:58,210 --> 00:16:00,501
>> Allura aħna qed tmur biex tikseb fis
xi ftit ta 'teorija hawn.

358
00:16:00,501 --> 00:16:03,330
U xi wħud minnkom, għajnejn tiegħek
jista roll lura ftit.

359
00:16:03,330 --> 00:16:06,936
Imma jien ser jippruvaw jżommha
livell għoli kemm nista '.

360
00:16:06,936 --> 00:16:08,880
Mela jekk int fil-proġett
ġestjoni, hemm

361
00:16:08,880 --> 00:16:12,280
tibni imsejjaħ il-
trijangolu ta 'restrizzjonijiet.

362
00:16:12,280 --> 00:16:12,936
KOLLOX SEW.

363
00:16:12,936 --> 00:16:16,060
It-triangolu ta 'kostrizzjonijiet tiddetta
ma jistax ikollok kollox il-ħin kollu.

364
00:16:16,060 --> 00:16:17,750
Ma jistgħux ikollhom pie tiegħek u jieklu wisq.

365
00:16:17,750 --> 00:16:22,310
Allura fil-ġestjoni tal-proġett, li trijanglu
restrizzjonijiet huwa inti jista 'jkollhom dan irħis,

366
00:16:22,310 --> 00:16:24,710
inti jista 'jkollhom dan malajr,
jew inti jista 'jkollhom tajba.

367
00:16:24,710 --> 00:16:25,716
Pick tnejn.

368
00:16:25,716 --> 00:16:27,090
Għaliex inti ma tista kollha tlieta.

369
00:16:27,090 --> 00:16:27,460
Dritt?

370
00:16:27,460 --> 00:16:27,820
KOLLOX SEW.

371
00:16:27,820 --> 00:16:28,920
>> Allura inti tisma 'dwar dan il-lott.

372
00:16:28,920 --> 00:16:31,253
Huwa restrizzjoni triplu,
trijangolu ta 'restrizzjoni triple,

373
00:16:31,253 --> 00:16:34,420
jew l-trijangolu ħadid huwa oftentimes--
meta tkellem lill-maniġers tal-proġett,

374
00:16:34,420 --> 00:16:35,420
dawn ser jitkellmu dwar dan.

375
00:16:35,420 --> 00:16:37,640
Issa, databases għandhom
trijangolu tal-ħadid tagħhom stess.

376
00:16:37,640 --> 00:16:40,350
U t-triangolu tal-ħadid tad-data
hu dak li nsejħu teorema KAP.

377
00:16:40,350 --> 00:16:41,580
KOLLOX SEW?

378
00:16:41,580 --> 00:16:43,770
>> PAK tiddetta teorema
kif databases joperaw

379
00:16:43,770 --> 00:16:45,627
taħt kundizzjoni speċifika ħafna.

380
00:16:45,627 --> 00:16:47,460
U aħna ser nitkellmu dwar
dak din il-kundizzjoni hija.

381
00:16:47,460 --> 00:16:52,221
Iżda t-tliet punti tat-trijangolu,
biex ngħidu hekk, huma C, konsistenza.

382
00:16:52,221 --> 00:16:52,720
KOLLOX SEW?

383
00:16:52,720 --> 00:16:56,760
Għalhekk fl CAP, il-konsistenza ifisser li kull
klijenti li jistgħu jaċċessaw id-dejtabejż

384
00:16:56,760 --> 00:16:59,084
dejjem se jkollha ħafna
opinjoni konsistenti ta 'data.

385
00:16:59,084 --> 00:17:00,750
Gonna ħadd naraw żewġ affarijiet differenti.

386
00:17:00,750 --> 00:17:01,480
KOLLOX SEW?

387
00:17:01,480 --> 00:17:04,020
Jekk nara d-database,
Jien jaraw l-istess fehma

388
00:17:04,020 --> 00:17:06,130
kif partner tiegħi li jara
l-istess database.

389
00:17:06,130 --> 00:17:07,470
Li konsistenza.

390
00:17:07,470 --> 00:17:12,099
>> Disponibbiltà ifisser li jekk il-
online database, jekk jista 'jintlaħaq,

391
00:17:12,099 --> 00:17:14,760
li l-klijenti kollha se dejjem
jkun kapaċi li jaqraw u jiktbu.

392
00:17:14,760 --> 00:17:15,260
KOLLOX SEW?

393
00:17:15,260 --> 00:17:17,010
Allura kull klijent li
tista 'taqra d-database

394
00:17:17,010 --> 00:17:18,955
dejjem se jinqraw jistgħu
data tad-dejta u jiktbu.

395
00:17:18,955 --> 00:17:21,819
U jekk dan huwa l-każ,
huwa ta 'sistema disponibbli.

396
00:17:21,819 --> 00:17:24,230
>> U t-tielet punt huwa dak
nitolbu tolleranza partition.

397
00:17:24,230 --> 00:17:24,730
KOLLOX SEW?

398
00:17:24,730 --> 00:17:28,160
Mezzi ta 'tolleranza Partition
li s-sistema taħdem tajjeb

399
00:17:28,160 --> 00:17:32,000
minkejja network fiżiku
ħitan bejn il-lymph.

400
00:17:32,000 --> 00:17:32,760
KOLLOX SEW?

401
00:17:32,760 --> 00:17:36,270
Allura lymph fil-cluster ma tistax
jitkellmu ma 'xulxin, x'jiġri?

402
00:17:36,270 --> 00:17:36,880
Kull dritt.

403
00:17:36,880 --> 00:17:39,545
>> Databases relazzjonali hekk choose--
inti tista 'pick tnejn minn dawn.

404
00:17:39,545 --> 00:17:40,045
KOLLOX SEW.

405
00:17:40,045 --> 00:17:43,680
Databases relazzjonali hekk jagħżlu
li tkun konsistenti u disponibbli.

406
00:17:43,680 --> 00:17:47,510
Jekk il-partition jiġri bejn
l DataNodes fil-maħżen tad-data,

407
00:17:47,510 --> 00:17:48,831
database crashes.

408
00:17:48,831 --> 00:17:49,330
Dritt?

409
00:17:49,330 --> 00:17:50,900
Huwa biss jinżel.

410
00:17:50,900 --> 00:17:51,450
KOLLOX SEW.

411
00:17:51,450 --> 00:17:54,230
>> U dan huwa għaliex dawn ikollhom
li jikbru bil-kaxxi akbar.

412
00:17:54,230 --> 00:17:54,730
Dritt?

413
00:17:54,730 --> 00:17:58,021
Għaliex hemm no-- normalment, cluster
database, hemm mhux ħafna ħafna minnhom

414
00:17:58,021 --> 00:17:59,590
li joperaw il-mod.

415
00:17:59,590 --> 00:18:03,019
Iżda ħafna databases iskala
vertikalment fi ħdan kaxxa waħda.

416
00:18:03,019 --> 00:18:05,060
Għaliex jeħtieġu li jkunu
konsistenti u disponibbli.

417
00:18:05,060 --> 00:18:10,320
Jekk partition kellhom jiġu injettati,
allura inti jkollha tagħmel għażla.

418
00:18:10,320 --> 00:18:13,720
Inti għandek tagħmel għażla bejn
jkunu konsistenti u disponibbli.

419
00:18:13,720 --> 00:18:16,080
>> U dan huwa dak databases NoSQL tagħmel.

420
00:18:16,080 --> 00:18:16,580
Kull dritt.

421
00:18:16,580 --> 00:18:20,950
Allura database NoSQL, huwa
jiġi f'żewġ flavors.

422
00:18:20,950 --> 00:18:22,990
Aħna have-- tajjeb, huwa
tiġi fi flavors ħafna,

423
00:18:22,990 --> 00:18:26,140
iżda niġu ma 'żewġ bażiku
characteristics-- dak

424
00:18:26,140 --> 00:18:30,050
aħna kieku ssejjaħ database CP, jew
tolleranza konsistenti u partition

425
00:18:30,050 --> 00:18:31,040
sistema.

426
00:18:31,040 --> 00:18:34,930
Dawn guys jagħmlu l-għażla li meta
il-lymph jitilfux il-kuntatt ma 'xulxin,

427
00:18:34,930 --> 00:18:37,091
aħna mhux qed tmur biex jippermettu
nies li jiktbu aktar.

428
00:18:37,091 --> 00:18:37,590
KOLLOX SEW?

429
00:18:37,590 --> 00:18:41,855
>> Sa dak partizzjoni tkun imneħħija,
aċċess jiktbu tkun imblukkata.

430
00:18:41,855 --> 00:18:43,230
Dan ifisser li mhux qed disponibbli.

431
00:18:43,230 --> 00:18:44,510
Huma qed konsistenti.

432
00:18:44,510 --> 00:18:46,554
Meta naraw li
partizzjoni tinjetta lilha nnifisha,

433
00:18:46,554 --> 00:18:48,470
aħna issa huma konsistenti,
għaliex aħna ma tkunx qed tmur

434
00:18:48,470 --> 00:18:51,517
li jippermettu l-bidla tad-data fuq żewġ
naħat tal-qasma indipendenti

435
00:18:51,517 --> 00:18:52,100
ta 'xulxin.

436
00:18:52,100 --> 00:18:54,130
Aħna se jkollhom
reestablish komunikazzjoni

437
00:18:54,130 --> 00:18:56,930
qabel kwalunkwe aġġornament għal
huwa permess l-informazzjoni.

438
00:18:56,930 --> 00:18:58,120
KOLLOX SEW?

439
00:18:58,120 --> 00:19:02,650
>> Il-flavor li jmiss ikun sistema AP,
jew disponibbli u maqsuma

440
00:19:02,650 --> 00:19:03,640
sistema tolleranza.

441
00:19:03,640 --> 00:19:05,320
Dawn guys ma 'kura.

442
00:19:05,320 --> 00:19:06,020
Dritt?

443
00:19:06,020 --> 00:19:08,960
Kull node li gets
jiktbu, aħna ser teħodha.

444
00:19:08,960 --> 00:19:11,480
Hekk jien jirreplikaw data tiegħi
madwar lymph multipli.

445
00:19:11,480 --> 00:19:14,730
Dawn in-nodi tikseb klijent, klijent niġu
fil, jgħid, jien ser jikteb xi data.

446
00:19:14,730 --> 00:19:16,300
Node jgħid, l-ebda problema.

447
00:19:16,300 --> 00:19:18,580
Il-punt strateġiku li jmiss lilu gets
jiktbu fuq l-istess reġistru,

448
00:19:18,580 --> 00:19:20,405
hu se ngħid ebda problema.

449
00:19:20,405 --> 00:19:23,030
X'imkien lura fuq il-aħħar lura,
li d-data għaddej biex jirreplika.

450
00:19:23,030 --> 00:19:27,360
U mbagħad xi ħadd għaddej biex tirrealizza,
UH-oh, sistema se tirrealizza, uh-oh,

451
00:19:27,360 --> 00:19:28,870
hemm kien aġġornament għal żewġ naħat.

452
00:19:28,870 --> 00:19:30,370
X'nagħmlu?

453
00:19:30,370 --> 00:19:33,210
U dak li jagħmlu allura huwa
jagħmlu xi ħaġa li

454
00:19:33,210 --> 00:19:36,080
jippermettilhom biex isolvu l-istat data.

455
00:19:36,080 --> 00:19:39,000
U aħna ser nitkellmu dwar
li fil-grafika li jmiss.

456
00:19:39,000 --> 00:19:40,000
>> Ħaġa li tfakkar hawn.

457
00:19:40,000 --> 00:19:42,374
U jien mhux se tikseb wisq
ħafna fis dan, għaliex dan

458
00:19:42,374 --> 00:19:43,510
gets fis teorija data fil-fond.

459
00:19:43,510 --> 00:19:46,670
Iżda hemm transazzjonali
qafas li

460
00:19:46,670 --> 00:19:50,680
runs f'sistema relazzjonali li
tippermetti me li b'mod sikur tagħmel aġġornamenti

461
00:19:50,680 --> 00:19:53,760
lill-entitajiet multipli fid-database.

462
00:19:53,760 --> 00:19:58,320
U dawk aġġornamenti se jseħħu
kollha f'daqqa jew xejn affattu.

463
00:19:58,320 --> 00:20:00,500
U dan jissejjaħ transazzjonijiet AĊIDU.

464
00:20:00,500 --> 00:20:01,000
KOLLOX SEW?

465
00:20:01,000 --> 00:20:06,570
>> ACID jagħtina atomicity, il-konsistenza,
iżolament, u d-durabbiltà.

466
00:20:06,570 --> 00:20:07,070
KOLLOX SEW?

467
00:20:07,070 --> 00:20:13,550
Dan ifisser, transazzjonijiet atomika, kollha
aġġornamenti tiegħi jew jiġri jew ma jagħmlux dan.

468
00:20:13,550 --> 00:20:16,570
Konsistenza ifisser li
Id-database dejjem

469
00:20:16,570 --> 00:20:19,780
jiddaħħlu konsistenti
istat wara aġġornament.

470
00:20:19,780 --> 00:20:23,900
I qatt se jħallu d-database fil-
stat ħażin wara l-applikazzjoni aġġornament.

471
00:20:23,900 --> 00:20:24,400
KOLLOX SEW?

472
00:20:24,400 --> 00:20:26,720
>> Allura huwa differenti ftit
minn konsistenza KAP.

473
00:20:26,720 --> 00:20:29,760
Konsistenza PAK mezzi kollha tiegħi
klijenti jistgħu dejjem tara l-informazzjoni.

474
00:20:29,760 --> 00:20:34,450
Konsistenza AĊIDU ifisser li meta
tranżazzjoni isir, l data tajba.

475
00:20:34,450 --> 00:20:35,709
Relazzjonijiet tiegħi huma kollha tajbin.

476
00:20:35,709 --> 00:20:38,750
Jien ma jmur biex tħassar ringiela ġenitur
u tħalli mazz ta 'tfal orfni

477
00:20:38,750 --> 00:20:40,970
f'xi tabella ieħor.

478
00:20:40,970 --> 00:20:44,320
Ma jistax jiġri jekk jien konsistenti
fi tranżazzjoni aċidu.

479
00:20:44,320 --> 00:20:49,120
>> Iżolament ifisser li t-transazzjonijiet
dejjem se jseħħu wara xulxin.

480
00:20:49,120 --> 00:20:51,920
Ir-riżultat aħħari ta 'l-informazzjoni
se jkun l-istess stat

481
00:20:51,920 --> 00:20:54,770
bħallikieku dawk it-tranżazzjonijiet
li nħarġu fl-istess ħin

482
00:20:54,770 --> 00:20:57,340
ġew eżegwiti serjalment.

483
00:20:57,340 --> 00:21:00,030
Allura huwa concurrency
kontroll fid-database.

484
00:21:00,030 --> 00:21:04,130
Għalhekk bażikament, ma nistax inkrement l
istess valur darbtejn b'żewġ operazzjonijiet.

485
00:21:04,130 --> 00:21:08,580
>> Imma jekk jien ngħid żid 1 sa dan il-valur,
u żewġ tranżazzjonijiet jaqgħu fil

486
00:21:08,580 --> 00:21:10,665
u jipprova jagħmel dan, wieħed huwa
se naslu s'hemm ewwel

487
00:21:10,665 --> 00:21:12,540
u l-ieħor tal-
se naslu s'hemm wara.

488
00:21:12,540 --> 00:21:15,210
Għalhekk fl-aħħar, I miżjuda tnejn.

489
00:21:15,210 --> 00:21:16,170
You see dak li jfisser I?

490
00:21:16,170 --> 00:21:16,670
KOLLOX SEW.

491
00:21:16,670 --> 00:21:19,220

492
00:21:19,220 --> 00:21:21,250
>> Durabilità hija pjuttost sempliċi.

493
00:21:21,250 --> 00:21:23,460
Meta t-tranżazzjoni
huwa rikonoxxut, huwa

494
00:21:23,460 --> 00:21:26,100
ser ikun hemm anke
jekk is-sistema crashes.

495
00:21:26,100 --> 00:21:29,230
Meta dik is-sistema jirkupra, li
transazzjoni li ġie kommess

496
00:21:29,230 --> 00:21:30,480
huwa fil-fatt se jkun hemm.

497
00:21:30,480 --> 00:21:33,130
Allura dak l-garanziji
ta 'transazzjonijiet AĊIDU.

498
00:21:33,130 --> 00:21:35,470
Dawk huma garanziji pretty sbieħ
li jkollhom fuq database,

499
00:21:35,470 --> 00:21:36,870
iżda dawn jiġu f'dak ispiża.

500
00:21:36,870 --> 00:21:37,640
Dritt?

501
00:21:37,640 --> 00:21:40,520
>> Minħabba li l-problema
ma 'dan il-qafas huwa

502
00:21:40,520 --> 00:21:44,540
jekk ikun hemm qasma fil-data
sett, I jkollhom biex jagħmlu deċiżjoni.

503
00:21:44,540 --> 00:21:48,000
Jien ser ikollu jippermetti
aġġornamenti fuq naħa waħda jew l-oħra.

504
00:21:48,000 --> 00:21:50,310
U jekk dan iseħħ,
allura jien m'għadhomx għaddejjin

505
00:21:50,310 --> 00:21:52,630
li tkun kapaċi żżomm
dawk il-karatteristiċi.

506
00:21:52,630 --> 00:21:53,960
Dawn mhux se jkunu konsistenti.

507
00:21:53,960 --> 00:21:55,841
Dawn mhux se jkunu iżolati.

508
00:21:55,841 --> 00:21:58,090
Dan huwa fejn jkisser
għall databases relazzjonali.

509
00:21:58,090 --> 00:22:01,360
Din hija r-raġuni relazzjonali
Databases fuq skala vertikalment.

510
00:22:01,360 --> 00:22:05,530
>> Min-naħa l-oħra, għandna
dak li sejjaħ teknoloġija BASE.

511
00:22:05,530 --> 00:22:07,291
U dawn huma Databases NoSQL tiegħek.

512
00:22:07,291 --> 00:22:07,790
Kull dritt.

513
00:22:07,790 --> 00:22:10,180
Allura aħna għandna CP tagħna, databases AP.

514
00:22:10,180 --> 00:22:14,720
U dawn huma dak li inti sejħa bażikament
disponibbli, l-istat artab, eventwalment

515
00:22:14,720 --> 00:22:15,740
konsistenti.

516
00:22:15,740 --> 00:22:16,420
KOLLOX SEW?

517
00:22:16,420 --> 00:22:19,690
>> Bażikament disponibbli, minħabba
dawn qed tolleranti partition.

518
00:22:19,690 --> 00:22:21,470
Huma dejjem se jkun
hemm, anke jekk hemm

519
00:22:21,470 --> 00:22:23,053
partition network bejn il-lymph.

520
00:22:23,053 --> 00:22:25,900
Jekk I tista 'tkellem lill node, jien
ser ikunu kapaċi li jaqra data.

521
00:22:25,900 --> 00:22:26,460
KOLLOX SEW?

522
00:22:26,460 --> 00:22:30,810
I mhux dejjem tkun tista 'tikteb
data jekk jien pjattaforma koerenti.

523
00:22:30,810 --> 00:22:32,130
Imma jien ser tkun kapaċi li jaqraw l-informazzjoni.

524
00:22:32,130 --> 00:22:34,960

525
00:22:34,960 --> 00:22:38,010
>> L-istat soft jindika
li meta sirt naf li data,

526
00:22:38,010 --> 00:22:40,790
jista 'ma jkunx l-istess bħal punti strateġiċi oħrajn.

527
00:22:40,790 --> 00:22:43,390
Jekk id-dritt inħareġ fuq node
x'imkien ieħor fid-cluster

528
00:22:43,390 --> 00:22:46,650
u ma replikat madwar l-
cluster għad meta sirt naf li data,

529
00:22:46,650 --> 00:22:48,680
dak l-istat jista 'ma jkunx konsistenti.

530
00:22:48,680 --> 00:22:51,650
Madankollu, se jkun
eventwalment konsistenti,

531
00:22:51,650 --> 00:22:53,870
li jfisser li meta tikteb
hija magħmula għas-sistema,

532
00:22:53,870 --> 00:22:56,480
dan jirreplika madwar l-lymph.

533
00:22:56,480 --> 00:22:59,095
U eventwalment, l-istat
se jinġiebu ordni,

534
00:22:59,095 --> 00:23:00,890
u se jkun stat konsistenti.

535
00:23:00,890 --> 00:23:05,000
>> Issa, teorema CAP verament
jilgħab biss f'kondizzjoni wieħed.

536
00:23:05,000 --> 00:23:08,700
Din il-kundizzjoni hija meta jiġri dan.

537
00:23:08,700 --> 00:23:13,710
Minħabba kull meta huwa jopera fil
mod normali, hemm ebda qasma,

538
00:23:13,710 --> 00:23:16,370
s konsistenti u disponibbli kollox.

539
00:23:16,370 --> 00:23:19,990
Inti biss joqogħdu jinkwetaw dwar CAP
meta jkollna dak partition.

540
00:23:19,990 --> 00:23:21,260
Għalhekk dawn huma rari.

541
00:23:21,260 --> 00:23:25,360
Imma kif is-sistema jirreaġixxi meta dawk
jseħħu jiddettaw liema tip ta 'sistema

542
00:23:25,360 --> 00:23:26,750
aħna qed jittrattaw.

543
00:23:26,750 --> 00:23:31,110
>> Mela ejja tagħti ħarsa lejn dak li
li qisu għal sistemi AP.

544
00:23:31,110 --> 00:23:32,621
KOLLOX SEW?

545
00:23:32,621 --> 00:23:34,830
Sistemi AP jiġu f'żewġ flavors.

546
00:23:34,830 --> 00:23:38,514
Huma daħlu fil-flavor li huwa
kaptan kaptan, 100%, dejjem disponibbli.

547
00:23:38,514 --> 00:23:40,430
U jkunu ġejjin fil-
togħma oħra, li jgħid,

548
00:23:40,430 --> 00:23:43,330
inti taf liema, jien ser tinkwetax
dwar dan ħaġa partizzjoni

549
00:23:43,330 --> 00:23:44,724
meta partition attwali iseħħ.

550
00:23:44,724 --> 00:23:47,890
Inkella, hemm għaddej li jkun primarja
lymph li għaddej biex tieħu d-drittijiet.

551
00:23:47,890 --> 00:23:48,500
KOLLOX SEW?

552
00:23:48,500 --> 00:23:50,040
>> Mela jekk irridu xi ħaġa bħal Cassandra.

553
00:23:50,040 --> 00:23:54,440
Cassandra tkun master
kaptan, let me jikteb lil kull waħda node.

554
00:23:54,440 --> 00:23:55,540
Allura x'jiġri?

555
00:23:55,540 --> 00:23:58,270
So I jkollhom oġġett fil-
database li teżisti fuq żewġ lymph.

556
00:23:58,270 --> 00:24:01,705
Ejja sejħa dak l-oġġett S.
Allura għandna l-istat għall S.

557
00:24:01,705 --> 00:24:04,312
Għandna xi operazzjonijiet
fuq S li għadhom għaddejjin.

558
00:24:04,312 --> 00:24:06,270
Cassandra tippermetti me
jikteb lill lymph multipli.

559
00:24:06,270 --> 00:24:08,550
Mela ejja ngħidu niġi
tikteb s għal żewġ lymph.

560
00:24:08,550 --> 00:24:12,274
Ukoll, dak li jispiċċa jiġri huwa
nitolbu li avveniment tqassim.

561
00:24:12,274 --> 00:24:14,190
Ma jista 'jkun hemm
partition network fiżiku.

562
00:24:14,190 --> 00:24:15,950
Iżda minħabba l-disinn
tas-sistema, huwa

563
00:24:15,950 --> 00:24:18,449
attwalment taqsim mill-aktar
bħala I nikseb write fuq żewġ lymph.

564
00:24:18,449 --> 00:24:20,830
Mhuwiex jisforzaw lili biex
jiktbu kollha permezz node wieħed.

565
00:24:20,830 --> 00:24:22,340
Jien bil-miktub fuq żewġ lymph.

566
00:24:22,340 --> 00:24:23,330
KOLLOX SEW?

567
00:24:23,330 --> 00:24:25,740
>> Allura issa I għandhom żewġ stati.

568
00:24:25,740 --> 00:24:26,360
KOLLOX SEW?

569
00:24:26,360 --> 00:24:28,110
X'hemm jiġri
huwa illum jew għada,

570
00:24:28,110 --> 00:24:29,960
hemm għaddej li tkun avveniment replikazzjoni.

571
00:24:29,960 --> 00:24:33,300
Hemm għaddej li jkun dak li aħna
imsejħa irkupru partition, li

572
00:24:33,300 --> 00:24:35,200
huwa fejn dawn iż-żewġ
stati terga 'lura flimkien

573
00:24:35,200 --> 00:24:37,310
u hemm għaddej li jkun algoritmu
li timxi ġewwa d-database,

574
00:24:37,310 --> 00:24:38,540
jiddeċiedi x'għandu jsir.

575
00:24:38,540 --> 00:24:39,110
KOLLOX SEW?

576
00:24:39,110 --> 00:24:43,057
Konvenzjonalment, l-aħħar aġġornament
jirbaħ fis-sistemi AP aktar.

577
00:24:43,057 --> 00:24:44,890
Allura hemm normalment
algoritmu default, dak

578
00:24:44,890 --> 00:24:47,400
li jsejjaħ callback
funzjoni, ħaġa li

579
00:24:47,400 --> 00:24:51,000
se jissejjaħ meta din il-kondizzjoni
jinstab li tesegwixxi xi loġika

580
00:24:51,000 --> 00:24:52,900
sabiex issolvi din kunflitt.

581
00:24:52,900 --> 00:24:53,850
KOLLOX SEW?

582
00:24:53,850 --> 00:24:58,770
Il callback default u nuqqas
resolver fid-databases AP aktar

583
00:24:58,770 --> 00:25:01,130
huwa, raden dak, timestamp jirbaħ.

584
00:25:01,130 --> 00:25:02,380
Dan kien l-aħħar aġġornament.

585
00:25:02,380 --> 00:25:04,320
Jien ser tpoġġi li l-aġġornament fil hemmhekk.

586
00:25:04,320 --> 00:25:08,440
I tista 'dump dan ir-rekord li I
iddampjati off fi log irkupru

587
00:25:08,440 --> 00:25:11,670
sabiex l-utent jista 'terga' lura aktar tard
u jgħidu, ħej, kien hemm ħabta.

588
00:25:11,670 --> 00:25:12,320
X'ġara?

589
00:25:12,320 --> 00:25:16,370
U inti tista 'attwalment dump rekord ta
l-kolliżjonijiet u l rollbacks

590
00:25:16,370 --> 00:25:17,550
u tara x'jiġri.

591
00:25:17,550 --> 00:25:21,580
>> Issa, bħala utent, int tista 'wkoll
jinkludu loġika f'dak callback.

592
00:25:21,580 --> 00:25:24,290
Allura inti tista 'bidla li
operazzjoni callback.

593
00:25:24,290 --> 00:25:26,730
Tista 'tgħid, ħej, nixtieq
jirrijabilita din id-data.

594
00:25:26,730 --> 00:25:28,880
U nixtieq li jippruvaw u
jingħaqdu dawn iż-żewġ reġistri.

595
00:25:28,880 --> 00:25:30,050
Imma dak li sa inti.

596
00:25:30,050 --> 00:25:32,880
Id-database ma tkunx taf kif
tagħmel dan awtomatikament. Ħafna żmien,

597
00:25:32,880 --> 00:25:34,850
l-unika ħaġa l-database
jaf kif tagħmel hu jgħidu,

598
00:25:34,850 --> 00:25:36,100
dan wieħed kien l-aħħar rekord.

599
00:25:36,100 --> 00:25:39,183
Dik hija l-waħda li għaddej biex tirbaħ,
u li l-valur jien ser tpoġġi.

600
00:25:39,183 --> 00:25:41,490
Ladarba li l-irkupru partition
u replikazzjoni sseħħ,

601
00:25:41,490 --> 00:25:43,930
għandna l-istat tagħna, li
issa huwa S prime, li hija

602
00:25:43,930 --> 00:25:46,890
l-istat amalgamazzjoni taż dawk l-oġġetti kollha.

603
00:25:46,890 --> 00:25:49,700
Allura sistemi AP jkollhom din.

604
00:25:49,700 --> 00:25:51,615
Sistemi CP m'għandhomx bżonn
ninkwetaw dwar dan.

605
00:25:51,615 --> 00:25:54,490
Minħabba hekk kif partition niġu
fis-rwol, huma biss tieqaf tieħu

606
00:25:54,490 --> 00:25:55,530
jikteb.

607
00:25:55,530 --> 00:25:56,180
KOLLOX SEW?

608
00:25:56,180 --> 00:25:58,670
Allura dak faċli ħafna biex
jittrattaw ma 'li tkun konsistenti

609
00:25:58,670 --> 00:26:01,330
meta inti ma taċċetta kwalunkwe aġġornament.

610
00:26:01,330 --> 00:26:04,620
Li ma 'sistemi CP tagħmel.

611
00:26:04,620 --> 00:26:05,120
Kull dritt.

612
00:26:05,120 --> 00:26:07,590
>> Mela ejja nitkellmu ftit
ftit dwar mudelli ta 'aċċess.

613
00:26:07,590 --> 00:26:11,580
Meta nitkellmu dwar NoSQL, huwa
kollha dwar il-mudell aċċess.

614
00:26:11,580 --> 00:26:13,550
Issa, SQL huwa ad hoc, mistoqsijiet.

615
00:26:13,550 --> 00:26:14,481
Huwa maħżen relazzjonali.

616
00:26:14,481 --> 00:26:16,480
Aħna ma jkollhom għalfejn tinkwieta
dwar il-mudell aċċess.

617
00:26:16,480 --> 00:26:17,688
I jiktbu mistoqsija kumplessa ħafna.

618
00:26:17,688 --> 00:26:19,250
Hija tmur u gets-data.

619
00:26:19,250 --> 00:26:21,210
Dak hu li dan jistenna
simili, normalizzazzjoni.

620
00:26:21,210 --> 00:26:24,890
>> Allura f'din l-istruttura partikolari,
aħna qed tħares lejn katalogu prodotti.

621
00:26:24,890 --> 00:26:26,640
Għandi tipi differenti ta 'prodotti.

622
00:26:26,640 --> 00:26:27,217
Għandi kotba.

623
00:26:27,217 --> 00:26:27,800
Għandi albums.

624
00:26:27,800 --> 00:26:30,090
Għandi videos.

625
00:26:30,090 --> 00:26:33,370
Ir-relazzjoni bejn il-prodotti
u kull wieħed minn dawn il-kotba, albums,

626
00:26:33,370 --> 00:26:34,860
u videos tabelli huwa 1: 1.

627
00:26:34,860 --> 00:26:35,800
Kull dritt?

628
00:26:35,800 --> 00:26:38,860
Stajt ltqajna ID prodott,
u li jikkorrispondi ID

629
00:26:38,860 --> 00:26:41,080
li ktieb, album, jew video.

630
00:26:41,080 --> 00:26:41,580
KOLLOX SEW?

631
00:26:41,580 --> 00:26:44,350
Li l-1: relazzjoni 1
madwar dawn it-tabelli.

632
00:26:44,350 --> 00:26:46,970
>> Issa, books-- kollha huma
għandhom hija proprjetajiet għeruq.

633
00:26:46,970 --> 00:26:47,550
Mhux problema.

634
00:26:47,550 --> 00:26:48,230
Li l-kbir.

635
00:26:48,230 --> 00:26:52,130
Relazzjoni One-to-one, I nikseb kollha
l-informazzjoni I bżonn biex jiddeskrivu dak il-ktieb.

636
00:26:52,130 --> 00:26:54,770
Albums Albums-- jkollhom binarji.

637
00:26:54,770 --> 00:26:56,470
Dan hu dak li nsejħu wieħed għal ħafna.

638
00:26:56,470 --> 00:26:58,905
Kull album jista 'jkollhom ħafna binarji.

639
00:26:58,905 --> 00:27:00,780
Allura għal kull binarju fuq
l-album, I jista 'jkollhom

640
00:27:00,780 --> 00:27:02,570
rekord ieħor f'din it-tabella tat-tfal.

641
00:27:02,570 --> 00:27:04,680
So I joħolqu rekord wieħed
fit-tabella albums tiegħi.

642
00:27:04,680 --> 00:27:06,700
I joħolqu skedarji multipli
fit-tabella binarji.

643
00:27:06,700 --> 00:27:08,850
Relazzjoni ta 'wieħed għal ħafna.

644
00:27:08,850 --> 00:27:11,220
>> Din ir-relazzjoni huwa dak
nitolbu-ħafna to ħafna.

645
00:27:11,220 --> 00:27:11,750
KOLLOX SEW?

646
00:27:11,750 --> 00:27:17,000
You see li l-atturi jista 'jkun
f'ħafna films, videos ħafna.

647
00:27:17,000 --> 00:27:21,450
Allura dak li nagħmlu huwa npoġġux dan mapping
tabella bejn dawk li hija biss

648
00:27:21,450 --> 00:27:24,040
mapep il-ID attur għall-video ID.

649
00:27:24,040 --> 00:27:28,464
Issa I tista 'toħloq query l tissieħeb
videos permezz attur video lill-atturi,

650
00:27:28,464 --> 00:27:31,130
u tagħti me lista sbieħ ta '
l-films u l-atturi kollha

651
00:27:31,130 --> 00:27:32,420
li kienu f'dak movie.

652
00:27:32,420 --> 00:27:33,290
>> KOLLOX SEW.

653
00:27:33,290 --> 00:27:33,880
So here we go.

654
00:27:33,880 --> 00:27:38,040
One-to-one hija l-ogħla livell
ir-relazzjoni; -one-to ħafna,

655
00:27:38,040 --> 00:27:40,240
albums għall-binarji; -ħafna to ħafna.

656
00:27:40,240 --> 00:27:44,990
Dawk huma l-aqwa tlieta livell
relazzjonijiet fi kwalunkwe database.

657
00:27:44,990 --> 00:27:48,050
Jekk inti taf kif dawk
relazzjonijiet jaħdmu flimkien,

658
00:27:48,050 --> 00:27:51,490
imbagħad inti taf ħafna
dwar database diġà.

659
00:27:51,490 --> 00:27:55,660
Allura NoSQL xogħlijiet ftit differenti.

660
00:27:55,660 --> 00:27:58,930
Ejja jaħsbu dwar għat-tieni dak li
jistenna simili li jmorru tikseb il-prodotti kollha tiegħi.

661
00:27:58,930 --> 00:28:01,096
>> Fil-maħżen relazzjonali, I
rridu nġibu prodotti kollha tiegħi

662
00:28:01,096 --> 00:28:02,970
fuq lista tal-prodotti kollha tiegħi.

663
00:28:02,970 --> 00:28:04,910
Li l-lott ta 'mistoqsijiet.

664
00:28:04,910 --> 00:28:07,030
I ltqajna mistoqsija għall-kotba kollha tiegħi.

665
00:28:07,030 --> 00:28:08,470
I ltqajna mistoqsija minn albums tiegħi.

666
00:28:08,470 --> 00:28:09,970
U sibt mistoqsija għall-videos kollha tiegħi.

667
00:28:09,970 --> 00:28:11,719
U jien qbilna li tqiegħed lilha
kollha flimkien f'lista

668
00:28:11,719 --> 00:28:15,250
u jservu lura sa l-
applikazzjoni li l-jitolbuha.

669
00:28:15,250 --> 00:28:18,000
>> Biex tikseb kotba tiegħi, I jissieħbu
Prodotti u Books.

670
00:28:18,000 --> 00:28:21,680
Biex tikseb albums tiegħi, I ltqajna biex jissieħbu
Prodotti, Albums, u Tracks.

671
00:28:21,680 --> 00:28:25,330
U biex tikseb videos tiegħi, għandi
biex jissieħbu Prodotti li Videos,

672
00:28:25,330 --> 00:28:28,890
jissieħbu permezz Attur Videos,
u jġibu fil-Atturi.

673
00:28:28,890 --> 00:28:31,020
Allura dak tliet mistoqsijiet.

674
00:28:31,020 --> 00:28:34,560
Mistoqsijiet kumplessi ħafna għall
jimmuntaw sett riżultat wieħed.

675
00:28:34,560 --> 00:28:36,540
>> C'est inqas minn ottimali.

676
00:28:36,540 --> 00:28:39,200
Dan huwa għaliex meta nitkellmu
dwar struttura data li l-

677
00:28:39,200 --> 00:28:42,900
mibni biex ikun agnostic għall-aċċess
pattern-- ukoll li l-kbir.

678
00:28:42,900 --> 00:28:45,730
U tista 'tara li dan huwa verament
sbieħ kif konna organizzata d-data.

679
00:28:45,730 --> 00:28:46,550
U inti taf liema?

680
00:28:46,550 --> 00:28:49,750
I biss jkollhom rekord wieħed għal attur.

681
00:28:49,750 --> 00:28:50,440
>> Li jibred.

682
00:28:50,440 --> 00:28:53,750
Stajt deduplicated atturi kollha tiegħi,
u I miżmuma assoċjazzjonijiet tiegħi

683
00:28:53,750 --> 00:28:55,200
f'din it-tabella mapping.

684
00:28:55,200 --> 00:29:00,620
Madankollu, jkollna l-informazzjoni
out isir għaljin.

685
00:29:00,620 --> 00:29:04,500
Jien jibgħat il-CPU kollha fuq is-sistema
tgħaqqad dawn l-istrutturi tad-data flimkien

686
00:29:04,500 --> 00:29:05,950
li tkun tista 'pull data b'lura.

687
00:29:05,950 --> 00:29:07,310
>> Allura kif nista 'nikseb madwar li?

688
00:29:07,310 --> 00:29:11,200
Fil NoSQL huwa dwar
aggregazzjoni, mhux normalizzazzjoni.

689
00:29:11,200 --> 00:29:13,534
Allura irridu ngħidu li rridu
tappoġġja l-mudell aċċess.

690
00:29:13,534 --> 00:29:15,283
Jekk il-mudell aċċess
għall-applikazzjonijiet,

691
00:29:15,283 --> 00:29:16,770
I bżonn li tikseb prodotti kollha tiegħi.

692
00:29:16,770 --> 00:29:19,027
Ejja ipoġġu l-prodotti fit-tabella waħda.

693
00:29:19,027 --> 00:29:22,110
Jekk I ipoġġu l-prodotti fit-tabella waħda,
I tista 'tagħżel biss il-prodotti

694
00:29:22,110 --> 00:29:23,850
minn dik it-tabella u niġi dan kollu.

695
00:29:23,850 --> 00:29:25,240
Well kif nista 'nagħmlu dan?

696
00:29:25,240 --> 00:29:28,124
Ukoll fil NoSQL hemm l-ebda
istruttura għall-tabella.

697
00:29:28,124 --> 00:29:30,540
Aħna ser nitkellmu ftit dwar
kif din taħdem fil Dynamo DB.

698
00:29:30,540 --> 00:29:33,570
Imma inti ma jkollhom l-istess
attributi u l-istess proprjetajiet

699
00:29:33,570 --> 00:29:37,751
f'kull ringiela waħda, f'kull wieħed
oġġett, bħal inti tagħmel fi tabella SQL.

700
00:29:37,751 --> 00:29:39,750
U dak li dan jippermetti me
tagħmel huwa ħafna affarijiet

701
00:29:39,750 --> 00:29:41,124
u jagħtu me ħafna ta 'flessibilità.

702
00:29:41,124 --> 00:29:45,360
F'dan il-każ partikolari, I
jkollhom dokumenti prodott tiegħi.

703
00:29:45,360 --> 00:29:49,090
U f'dan il-partikolari
eżempju, kollox

704
00:29:49,090 --> 00:29:51,930
huwa dokument fit-tabella Prodotti.

705
00:29:51,930 --> 00:29:56,510
U l-prodott ta 'ktieb jista
ikollhom ID tip li tispeċifika ktieb.

706
00:29:56,510 --> 00:29:59,180
U l-applikazzjoni
se jaqilbu fuq dik ID.

707
00:29:59,180 --> 00:30:02,570
>> Fil-livell applikazzjoni, jien ser
li jgħidu oh, liema tip ta 'rekord huwa dan?

708
00:30:02,570 --> 00:30:04,100
Oh, huwa rekord ktieb.

709
00:30:04,100 --> 00:30:05,990
Rekords Ktieb jkollhom dawn il-proprjetajiet.

710
00:30:05,990 --> 00:30:08,100
Let me toħloq oġġett ktieb.

711
00:30:08,100 --> 00:30:11,289
Hekk jien ser timla l-
oġġett ktieb ma 'din il-partita.

712
00:30:11,289 --> 00:30:13,080
Punt li jmiss jidħol u
jgħid, x'hemm din il-partita?

713
00:30:13,080 --> 00:30:14,560
Ukoll din il-partita huwa album.

714
00:30:14,560 --> 00:30:17,340
Oh, I ltqajna differenti kollha
ipproċessar ta 'rutina għal dan,

715
00:30:17,340 --> 00:30:18,487
għaliex dan huwa album.

716
00:30:18,487 --> 00:30:19,320
You see dak li jfisser I?

717
00:30:19,320 --> 00:30:21,950
>> Allura l-applikazzjoni tier-- I
tagħżel biss dawn ir-rekords kollha.

718
00:30:21,950 --> 00:30:23,200
Huma kollha jibdew ġejjin fil.

719
00:30:23,200 --> 00:30:24,680
Dawn jistgħu jkunu tipi differenti kollha.

720
00:30:24,680 --> 00:30:27,590
U huwa loġika tal-applikazzjoni tal
li swiċċijiet madwar dawk it-tipi

721
00:30:27,590 --> 00:30:29,530
u jiddeċiedi kif jipproċessawhom.

722
00:30:29,530 --> 00:30:33,640
>> Għal darb'oħra, hekk aħna qed ottimizzat l
schema għall-mudell aċċess.

723
00:30:33,640 --> 00:30:36,390
Aħna qed tagħmel dan mill
taħfir dawk it-tabelli.

724
00:30:36,390 --> 00:30:39,670
Aħna qed bażikament tieħu
dawn l-istrutturi normalizzati,

725
00:30:39,670 --> 00:30:42,000
u aħna qed tinbena
strutturi ta 'ġerarkiċi.

726
00:30:42,000 --> 00:30:45,130
Ġewwa kull wieħed minn dawn ir-rekords
Jien ser tara proprjetajiet array.

727
00:30:45,130 --> 00:30:49,400
>> Ġewwa dan id-dokument għall Albums,
Jien jaraw arrays ta binarji.

728
00:30:49,400 --> 00:30:53,900
Dawn il-binarji issa become-- huwa
bażikament din it-tabella tat-tfal li

729
00:30:53,900 --> 00:30:56,520
jeżisti dritt hawn f'din l-istruttura.

730
00:30:56,520 --> 00:30:57,975
Allura inti tista 'tagħmel dan fil DynamoDB.

731
00:30:57,975 --> 00:30:59,810
Tista 'tagħmel dan fil MongoDB.

732
00:30:59,810 --> 00:31:01,437
Tista 'tagħmel dan fi kwalunkwe database NoSQL.

733
00:31:01,437 --> 00:31:03,520
Oħloq dawn it-tipi ta '
strutturi tad-dejta ġerarkiċi

734
00:31:03,520 --> 00:31:07,120
li jippermettu inti jirkupraw data
malajr ħafna għaliex issa I

735
00:31:07,120 --> 00:31:08,537
m'għandhomx għalfejn jikkonformaw.

736
00:31:08,537 --> 00:31:11,620
Meta I daħħal ringiela fil-Tracks
mejda, jew ringiela fit-tabella Albums,

737
00:31:11,620 --> 00:31:13,110
Għandi biex jikkonformaw ma 'dik schema.

738
00:31:13,110 --> 00:31:18,060
I għandhom ikollhom l-attribut jew l
proprjetà li hija definita fuq dik it-tabella.

739
00:31:18,060 --> 00:31:20,480
Kull wieħed minnhom,
meta I daħħal dik filliera.

740
00:31:20,480 --> 00:31:21,910
Li mhux il-każ fil NoSQL.

741
00:31:21,910 --> 00:31:24,440
>> I jista 'jkollhom totalment differenti
proprjetajiet f'kull dokument

742
00:31:24,440 --> 00:31:26,100
I ddaħħal fil-ġbir.

743
00:31:26,100 --> 00:31:30,480
Mekkaniżmu tant qawwija ħafna.

744
00:31:30,480 --> 00:31:32,852
U huwa verament kif inti
jottimizzaw is-sistema.

745
00:31:32,852 --> 00:31:35,310
Minħabba li issa li mistoqsija, minflok
li jingħaqdu dawn it-tabelli kollha

746
00:31:35,310 --> 00:31:39,160
u eżekuzzjoni mistoqsijiet nofs tuzzana
li jintefgħu fuq wara d-data I bżonn,

747
00:31:39,160 --> 00:31:40,890
Jien eżekuzzjoni mistoqsija waħda.

748
00:31:40,890 --> 00:31:43,010
U jien mtennija
madwar ir-riżultati stabbiliti.

749
00:31:43,010 --> 00:31:46,512
tagħtik idea
tal-qawwa ta NoSQL.

750
00:31:46,512 --> 00:31:49,470
Jien ser tip ta 'jmorru lejn il-ġenb hawn
u jitkellmu ftit dwar dan.

751
00:31:49,470 --> 00:31:53,240
Dan huwa aktar tip tal-
marketing jew technology--

752
00:31:53,240 --> 00:31:55,660
il-marketing tat-teknoloġija
tip ta 'diskussjoni.

753
00:31:55,660 --> 00:31:58,672
Iżda huwa importanti li wieħed jifhem
għaliex jekk inħarsu lejn il-quċċata

754
00:31:58,672 --> 00:32:00,380
hawn fuq din it-tabella,
dak li aħna qed tħares lejn

755
00:32:00,380 --> 00:32:04,030
hu dak li nsejħu l-
Kurva hype teknoloġija.

756
00:32:04,030 --> 00:32:06,121
U dak li dan ifisser huwa
għalf ġdid jidħol fis play.

757
00:32:06,121 --> 00:32:07,120
Nies jaħsbu huwa kbir.

758
00:32:07,120 --> 00:32:09,200
Stajt solvuti problemi kollha tiegħi.

759
00:32:09,200 --> 00:32:11,630
>> Dan jista 'jkun l-aħħar
kollha, ikunu kollha li kollox.

760
00:32:11,630 --> 00:32:12,790
U huma tibda tuża din.

761
00:32:12,790 --> 00:32:14,720
U jgħidu, dan il-għalf ma taħdimx.

762
00:32:14,720 --> 00:32:17,600
Dan mhuwiex dritt.

763
00:32:17,600 --> 00:32:19,105
L-għalf qodma kien aħjar.

764
00:32:19,105 --> 00:32:21,230
U dawn imorru lura għal dawk li jagħmlu
affarijiet il-mod kienu.

765
00:32:21,230 --> 00:32:22,730
U mbagħad eventwalment
imorru, inti taf liema?

766
00:32:22,730 --> 00:32:24,040
Dan il-għalf mhuwiex daqshekk ħżiena.

767
00:32:24,040 --> 00:32:26,192
Oh, li kif taħdem.

768
00:32:26,192 --> 00:32:28,900
U ladarba jkunu figura kif
xogħlijiet, dawn jibdew jkollna aħjar.

769
00:32:28,900 --> 00:32:32,050
>> U l-ħaġa umoristiċi dwar dan
huwa, tip ta 'linji sa dak

770
00:32:32,050 --> 00:32:34,300
nsejħu l Curve Adozzjoni Teknoloġija.

771
00:32:34,300 --> 00:32:36,910
Allura dak li jiġri huwa li għandna
xi grillu teknoloġija tip.

772
00:32:36,910 --> 00:32:39,100
Fil-każ ta 'databases,
huwa pressjoni data.

773
00:32:39,100 --> 00:32:42,200
Aħna tkellimna dwar il-punti ta 'ilma għolja
ta 'pressjoni data matul iż-żmien.

774
00:32:42,200 --> 00:32:46,310
Meta din il-pressjoni tad-data hits ċertu
punt, li l-grillu teknoloġija.

775
00:32:46,310 --> 00:32:47,830
>> Huwa jkollna wisq għaljin.

776
00:32:47,830 --> 00:32:49,790
Huwa jieħu wisq żmien biex jipproċessaw id-data.

777
00:32:49,790 --> 00:32:50,890
Għandna bżonn xi ħaġa aħjar.

778
00:32:50,890 --> 00:32:52,890
Ikollok l-innovaturi
hemmhekk running madwar,

779
00:32:52,890 --> 00:32:55,050
jippruvaw biex issir taf x'inhu l-soluzzjoni.

780
00:32:55,050 --> 00:32:56,050
X'hemm l-idea ġdida?

781
00:32:56,050 --> 00:32:58,170
>> X'inhu l-aħjar li jmiss
mod biex isir dan ħaġa?

782
00:32:58,170 --> 00:32:59,530
U jkunu ġejjin up ma 'xi ħaġa.

783
00:32:59,530 --> 00:33:03,140
U l-poplu bl-uġigħ reali,
l-guys fit-tarf fsada,

784
00:33:03,140 --> 00:33:06,390
dawn ser jaqbżu kollha fuqha,
għaliex jeħtieġu risposta.

785
00:33:06,390 --> 00:33:09,690
Issa dak inevitabbilment happens-- u
din se ssir dritt issa fil NoSQL.

786
00:33:09,690 --> 00:33:11,090
Nara dan il-ħin kollu.

787
00:33:11,090 --> 00:33:13,610
>> Dak li jiġri huwa inevitabbilment
nies jibdew jużaw l-għodda l-ġdida

788
00:33:13,610 --> 00:33:15,490
bl-istess mod huma użati l-għodda antika.

789
00:33:15,490 --> 00:33:17,854
U huma nsib dan
ma tahdem tajjeb.

790
00:33:17,854 --> 00:33:20,020
I ma tistax tiftakar min I kien
tkellem lill aktar kmieni llum.

791
00:33:20,020 --> 00:33:22,080
Imma huwa simili, meta l-
jackhammer ġiet ivvintata,

792
00:33:22,080 --> 00:33:24,621
nies ma jitbandal dan matul
ras tagħhom biex smash il-konkrit.

793
00:33:24,621 --> 00:33:27,360

794
00:33:27,360 --> 00:33:30,610
>> Imma dan huwa dak i
jiġri bil NoSQL llum.

795
00:33:30,610 --> 00:33:33,900
Jekk inti timxi fl għal ħwienet aktar,
li jkunu qed jippruvaw ikunu ħwienet NoSQL.

796
00:33:33,900 --> 00:33:36,510
Dak li qed isir huwa
li qed jużaw NoSQL,

797
00:33:36,510 --> 00:33:39,900
u dawn qed jitgħabbew
sħiħa ta 'schema relazzjonali.

798
00:33:39,900 --> 00:33:41,630
Minħabba li kif
huma u jfasslu databases.

799
00:33:41,630 --> 00:33:44,046
U dawn qed jistaqsi, għaliex hija
ma sejra tajjeb ħafna?

800
00:33:44,046 --> 00:33:45,230
Boy, dan il-ħaġa stinks.

801
00:33:45,230 --> 00:33:49,900
I kellhom iżommu kollha tiegħi
jingħaqad in-- huwa simili, no, no.

802
00:33:49,900 --> 00:33:50,800
Iżomm tissieħeb?

803
00:33:50,800 --> 00:33:52,430
Għalfejn qed jingħaqdu data?

804
00:33:52,430 --> 00:33:54,350
Inti ma jissieħbu data fil NoSQL.

805
00:33:54,350 --> 00:33:55,850
Inti jaggregah.

806
00:33:55,850 --> 00:34:00,690
>> Mela jekk inti tixtieq li tevita dan, jitgħallmu
kif l-għodda tax-xogħlijiet qabel ma attwalment

807
00:34:00,690 --> 00:34:02,010
tibda tuża din.

808
00:34:02,010 --> 00:34:04,860
Tippruvax u jużaw l-għodod ġodda tal-
istess mod inti użati l-għodod antiki.

809
00:34:04,860 --> 00:34:06,500
Inti qed tmur biex ikollhom esperjenza ħażina.

810
00:34:06,500 --> 00:34:08,848
U kull wieħed ħin
dan huwa dak li din hija ta 'madwar.

811
00:34:08,848 --> 00:34:11,389
Meta nibdew ġejjin up here,
huwa għaliex in-nies dehret

812
00:34:11,389 --> 00:34:13,449
kif jużaw l-għodod.

813
00:34:13,449 --> 00:34:16,250
>> Huma għamlu l-istess ħaġa meta
databases relazzjonali ġew ivvintati,

814
00:34:16,250 --> 00:34:17,969
u kienu tissostitwixxi sistemi fajl.

815
00:34:17,969 --> 00:34:20,420
Huma ppruvaw jibnu sistemi fajl
ma 'databases relazzjonali

816
00:34:20,420 --> 00:34:22,159
għaliex dan huwa dak in-nies mifhuma.

817
00:34:22,159 --> 00:34:23,049
Hija ma taħdimx.

818
00:34:23,049 --> 00:34:26,090
Allura fehim-aħjar prattiki
tat-teknoloġija qed jaħdmu ma '

819
00:34:26,090 --> 00:34:26,730
huwa enormi.

820
00:34:26,730 --> 00:34:29,870
Importanti ħafna.

821
00:34:29,870 --> 00:34:32,440
>> Allura aħna qed tmur biex tikseb fis DynamoDB.

822
00:34:32,440 --> 00:34:36,480
DynamoDB hija s AWS
kompletament ġestiti pjattaforma NoSQL.

823
00:34:36,480 --> 00:34:37,719
Xi jfisser kompletament ġestiti jfisser?

824
00:34:37,719 --> 00:34:40,010
Dan ifisser li inti ma għandekx bżonn li
verament tinkwieta dwar xi ħaġa.

825
00:34:40,010 --> 00:34:42,060
>> You jidħlu fi, inti tgħid
us, I bżonn tabella.

826
00:34:42,060 --> 00:34:43,409
Jeħtieġ din il-kapaċità ħafna.

827
00:34:43,409 --> 00:34:47,300
Inti laqat il-buttuna, u l-provvediment aħna
l-infrastruttura wara l-xena.

828
00:34:47,300 --> 00:34:48,310
Issa li huwa enormi.

829
00:34:48,310 --> 00:34:51,310
>> Għaliex meta inti titkellem
dwar skalar 'database,

830
00:34:51,310 --> 00:34:53,917
Clusters data NoSQL fil
iskala, petabytes tmexxija,

831
00:34:53,917 --> 00:34:55,750
tmexxija miljuni ta '
transazzjonijiet kull sekonda,

832
00:34:55,750 --> 00:34:58,180
dawn l-affarijiet mhumiex clusters żgħar.

833
00:34:58,180 --> 00:35:00,830
Aħna qed jitkellem eluf ta 'każijiet.

834
00:35:00,830 --> 00:35:04,480
Ġestjoni eluf ta 'każijiet,
anke każijiet virtwali,

835
00:35:04,480 --> 00:35:06,350
huwa reali uġigħ fil-butt.

836
00:35:06,350 --> 00:35:09,110
I mean, jaħsbu dwar kull żmien
Operating System garża toħroġ

837
00:35:09,110 --> 00:35:11,552
jew verżjoni ġdida tad-database.

838
00:35:11,552 --> 00:35:13,260
Xi tfisser
lilek operazzjonalment?

839
00:35:13,260 --> 00:35:16,330
Dan ifisser li inti ltqajna 1200
servers li jeħtieġ li jiġu aġġornati.

840
00:35:16,330 --> 00:35:18,960
Issa anke bl-awtomazzjoni,
li tista 'tieħu żmien twil.

841
00:35:18,960 --> 00:35:21,480
Li jista 'jikkawża ħafna ta'
uġigħ ta 'ras operattivi,

842
00:35:21,480 --> 00:35:23,090
minħabba I jista 'jkollhom servizzi isfel.

843
00:35:23,090 --> 00:35:26,070
>> Kif taġġorna dawn id-databases, I
tista 'tagħmel skjeramenti aħdar blu

844
00:35:26,070 --> 00:35:29,420
fejn I jużaw u jaġġornaw nofs tiegħi
lymph, u mbagħad upgrade nofs l-ieħor.

845
00:35:29,420 --> 00:35:30,490
Ħu dawk stabbiliti.

846
00:35:30,490 --> 00:35:33,410
Allura imexxu l-infrastruttura
iskala hija ħafna uġigħ.

847
00:35:33,410 --> 00:35:36,210
U AWS jieħdu dik uġigħ minnha.

848
00:35:36,210 --> 00:35:39,210
U databases NoSQL tista
jkunu straordinarjament uġigħ

849
00:35:39,210 --> 00:35:41,780
minħabba l-mod kif iskala.

850
00:35:41,780 --> 00:35:42,926
>> Skala orizzontalment.

851
00:35:42,926 --> 00:35:45,550
Jekk inti tixtieq li tikseb NoSQL akbar
database, tixtri aktar lymph.

852
00:35:45,550 --> 00:35:48,660
Kull node inti tixtri hija
uġigħ ta 'ras operattiva ieħor.

853
00:35:48,660 --> 00:35:50,830
Mela ejja xi ħadd ieħor jagħmel dan għalik.

854
00:35:50,830 --> 00:35:52,000
AWS tista 'tagħmel dan.

855
00:35:52,000 --> 00:35:54,587
>> Aħna nappoġġaw valuri dokument ewlenin.

856
00:35:54,587 --> 00:35:56,670
Issa aħna ma tmurx wisq
fil fuq il-karta oħra.

857
00:35:56,670 --> 00:35:58,750
Hemm ħafna ta 'differenti
togħmiet ta 'NoSQL.

858
00:35:58,750 --> 00:36:02,670
Huma qed kull tip ta 'jkollna
munged flimkien f'dan il-punt.

859
00:36:02,670 --> 00:36:06,260
Inti tista 'tħares lejn DynamoDB u jgħidu iva,
aħna qed kemm dokument u valur ewlieni

860
00:36:06,260 --> 00:36:08,412
taħżen dan il-punt.

861
00:36:08,412 --> 00:36:10,620
U inti tista 'jargumentaw il-karatteristiċi
ta 'wieħed fuq l-ieħor.

862
00:36:10,620 --> 00:36:13,950
Lili, lott ta 'dan huwa verament sitt
ta 'nofs tużżana ta' l-ieħor.

863
00:36:13,950 --> 00:36:18,710
Kull wieħed minn dawn it-teknoloġiji huwa
teknoloġija multa u soluzzjoni multa.

864
00:36:18,710 --> 00:36:23,390
Jien ma ngħid MongoDB huwa aħjar jew
agħar minn Couch, allura Cassandra,

865
00:36:23,390 --> 00:36:25,994
imbagħad Dynamo, jew viċe versa.

866
00:36:25,994 --> 00:36:27,285
I mean, dawn huma biss għażliet.

867
00:36:27,285 --> 00:36:29,850

868
00:36:29,850 --> 00:36:32,700
>> Huwa mgħaġġel u huwa
konsistenti fi kwalunkwe skala.

869
00:36:32,700 --> 00:36:36,210
Allura dan huwa wieħed mill-akbar
bonuses ikollok ma AWS.

870
00:36:36,210 --> 00:36:40,850
Bl DynamoDB hija l-abbiltà
tikseb numru b'figura waħda baxxa

871
00:36:40,850 --> 00:36:44,040
latency millisekonda fi kwalunkwe skala.

872
00:36:44,040 --> 00:36:45,720
Li kienx xi gowl tad-disinn tas-sistema.

873
00:36:45,720 --> 00:36:49,130
U għandna klijenti li qed jagħmlu
miljuni ta 'tranżazzjonijiet kull sekonda.

874
00:36:49,130 --> 00:36:52,670
>> Issa I ser jgħaddu xi wħud minn dawk
każijiet ta 'użu fi ftit minuti hawn.

875
00:36:52,670 --> 00:36:55,660
Control-- aċċess Integrata
għandna nsejħu

876
00:36:55,660 --> 00:36:57,920
Identità Aċċess Tmexxija, jew IAM.

877
00:36:57,920 --> 00:37:01,980
Hija ma jinxteridx f'kull sistema,
kull servizz li AWS joffri.

878
00:37:01,980 --> 00:37:03,630
DynamoDB l-ebda eċċezzjoni.

879
00:37:03,630 --> 00:37:06,020
Inti tista 'tikkontrolla l-aċċess
għat-tabelli DynamoDB.

880
00:37:06,020 --> 00:37:09,960
Madwar l AWS tiegħek kontijiet mill
jiddefinixxi rwoli aċċess u l-permessi

881
00:37:09,960 --> 00:37:12,140
fl-infrastruttura IAM.

882
00:37:12,140 --> 00:37:16,630
>> U huwa komponent ewlieni u integrali fil
nsejħu Avveniment Programmazzjoni Immexxija.

883
00:37:16,630 --> 00:37:19,056
Issa dan huwa mudell ġdid.

884
00:37:19,056 --> 00:37:22,080
>> UDJENZA: Kif jgħid ir-rata tiegħek ta 'veru
pożittivi kontra negattivi foloz

885
00:37:22,080 --> 00:37:24,052
fis-sistema tiegħek kontroll ta 'aċċess?

886
00:37:24,052 --> 00:37:26,260
Rick HOULIHAN: veru pożittivi
versus negattivi foloz?

887
00:37:26,260 --> 00:37:28,785
UDJENZA: Jirritornaw dak
inti għandek tkun jirritornaw?

888
00:37:28,785 --> 00:37:33,720
Kontrarjament għal darba fil-waqt li
ma ritorn meta suppost jivvalida?

889
00:37:33,720 --> 00:37:36,260

890
00:37:36,260 --> 00:37:38,050
>> Rick HOULIHAN: I ma setax jgħidlek li.

891
00:37:38,050 --> 00:37:40,140
Jekk ikun hemm xi fallimenti
tkun xi tkun fuq li,

892
00:37:40,140 --> 00:37:42,726
Jien ma l-persuna li titlob
din id-domanda partikolari.

893
00:37:42,726 --> 00:37:43,850
Iżda li l-mistoqsija tajba.

894
00:37:43,850 --> 00:37:45,905
Inkun kurjużi li tkun taf
li myself, fil-fatt.

895
00:37:45,905 --> 00:37:48,810

896
00:37:48,810 --> 00:37:51,320
>> U għalhekk mbagħad, mudell ġdid
hija l-ippjanar mmexxija mill-avvenimenti.

897
00:37:51,320 --> 00:37:55,160
Dan huwa l-idea li inti tista '
tiskjera applikazzjonijiet kumplessi li

898
00:37:55,160 --> 00:37:59,720
jistgħu joperaw ħafna, l-iskala għolja ħafna
mingħajr ebda infrastruttura tkun xi tkun.

899
00:37:59,720 --> 00:38:02,120
Mingħajr l-ebda fiss
infrastruttura tkun xi tkun.

900
00:38:02,120 --> 00:38:04,720
U aħna ser nitkellmu ftit
dwar dak li tfisser kif aħna

901
00:38:04,720 --> 00:38:06,550
jiksbu fuq il-koppja li jmiss ta 'mapep.

902
00:38:06,550 --> 00:38:08,716
>> L-ewwel ħaġa li aħna ser nagħmlu
hija aħna ser nitkellmu dwar it-tabelli.

903
00:38:08,716 --> 00:38:10,857
Tipi ta 'data API għall Dynamo.

904
00:38:10,857 --> 00:38:13,190
U l-ewwel ħaġa tkun taf
Avviż meta inti tħares lejn din,

905
00:38:13,190 --> 00:38:17,930
jekk int familjari ma 'xi database,
databases jkollhom verament żewġ tip ta 'APIs

906
00:38:17,930 --> 00:38:18,430
I d sejħa tiegħu.

907
00:38:18,430 --> 00:38:21,570
Jew żewġ settijiet ta 'API.

908
00:38:21,570 --> 00:38:23,840
Wieħed minn dawk tkun
API amministrattiva.

909
00:38:23,840 --> 00:38:26,710
>> L-affarijiet li jieħdu ħsieb
il-funzjonijiet tad-database.

910
00:38:26,710 --> 00:38:31,340
Konfigurazzjoni tal-magna ħażna,
twaqqif u żżid tabelli.

911
00:38:31,340 --> 00:38:35,180
tinħoloq database
katalgi u istanzi.

912
00:38:35,180 --> 00:38:40,450
Dawn things-- fil DynamoDB, inti
għandhom qosra ħafna, listi qosra.

913
00:38:40,450 --> 00:38:43,120
>> Għalhekk fl databases oħra,
inti tista 'tara għexieren

914
00:38:43,120 --> 00:38:45,680
tal jikkmanda, ta amministrattiva
jikkmanda, għall-konfigurazzjoni

915
00:38:45,680 --> 00:38:47,290
dawn l-għażliet addizzjonali.

916
00:38:47,290 --> 00:38:51,234
Fil DynamoDB inti m'għandekx bżonn dawk minħabba
inti ma kkonfigurat-sistema, nagħmlu.

917
00:38:51,234 --> 00:38:54,150
Allura l-unika ħaġa li għandek bżonn tagħmel huwa
tell me liema daqs tabella għandi bżonn.

918
00:38:54,150 --> 00:38:55,660
Allura ikollok ħafna
sett limitat ta 'ordnijiet.

919
00:38:55,660 --> 00:38:58,618
>> Ikollok Oħloq Tabella Update, Tabella,
Ħassar Tabella, u Iddeskrivi t-Tabella.

920
00:38:58,618 --> 00:39:01,150
Dawk huma l-uniċi affarijiet
għandek bżonn għall DynamoDB.

921
00:39:01,150 --> 00:39:03,294
Inti ma għandekx bżonn ħażna
konfigurazzjoni tal-magna.

922
00:39:03,294 --> 00:39:04,960
I m'għandhomx bżonn ninkwetaw dwar replikazzjoni.

923
00:39:04,960 --> 00:39:06,490
I m'għandhomx bżonn ninkwetaw dwar sharding.

924
00:39:06,490 --> 00:39:07,800
>> I m'għandhomx bżonn ninkwetaw
dwar xi parti minn dan il-għalf.

925
00:39:07,800 --> 00:39:08,740
Aħna tagħmel dan kollu għalik.

926
00:39:08,740 --> 00:39:11,867
Allura li l-ammont kbir ta 'overhead
li jinsab biss tintrefa pjanċa tiegħek.

927
00:39:11,867 --> 00:39:13,200
Imbagħad għandna l-operaturi crud.

928
00:39:13,200 --> 00:39:17,740
Crud hija xi ħaġa dak li aħna
sejħa fid-database li l-

929
00:39:17,740 --> 00:39:19,860
Joħolqu, jaġġornaw, iħassru operaturi.

930
00:39:19,860 --> 00:39:24,180
Dawn huma komuni tiegħek
Operazzjonijiet database.

931
00:39:24,180 --> 00:39:31,299
Affarijiet simili partita mressqa, ​​jiksbu oġġett, jaġġornaw
oġġetti, tħassar oġġetti, query lott, scan.

932
00:39:31,299 --> 00:39:32,840
Jekk inti tixtieq li skennjati l-tabella sħiħa.

933
00:39:32,840 --> 00:39:34,220
Iġbed kollox fuq il-mejda.

934
00:39:34,220 --> 00:39:37,130
Waħda mill-affarijiet sbieħ dwar DynamoDB
huwa li jippermetti scanning parallel.

935
00:39:37,130 --> 00:39:40,602
Allura inti tista 'attwalment let me know kif ħafna
ħjut inti tixtieq li jimxu fuq dan scan.

936
00:39:40,602 --> 00:39:41,810
U aħna tista 'taħdem dawk ħjut.

937
00:39:41,810 --> 00:39:43,985
Nistgħu spin li scan up
madwar ħjut multipli

938
00:39:43,985 --> 00:39:49,060
sabiex inti tista skennjati l-tabella sħiħa
ispazju ħafna, malajr ħafna fil DynamoDB.

939
00:39:49,060 --> 00:39:51,490
>> Il API oħra għandna huwa
nsejħu Streams API tagħna.

940
00:39:51,490 --> 00:39:52,940
Aħna mhux se jitkellmu wisq
ħafna dwar dan id-dritt issa.

941
00:39:52,940 --> 00:39:55,189
Stajt ltqajna xi kontenut aktar tard
fuq fil-gverta dwar dan.

942
00:39:55,189 --> 00:39:59,910
Imma Streams huwa verament running--
jaħsbu li bħala l-ħin ordnat

943
00:39:59,910 --> 00:40:01,274
u log bidla partition.

944
00:40:01,274 --> 00:40:03,940
Dak kollu li jiġri fuq
It-tabella turi up fuq in-nixxiegħa.

945
00:40:03,940 --> 00:40:05,940
>> Kull jikteb lill-tabella
juri fuq in-nixxiegħa.

946
00:40:05,940 --> 00:40:08,370
Tista 'taqra li nixxiegħa, u
inti tista 'tagħmel affarijiet magħha.

947
00:40:08,370 --> 00:40:10,150
Aħna ser jitkellmu dwar dak
tipi ta 'affarijiet li inti

948
00:40:10,150 --> 00:40:13,680
ma 'l-affarijiet simili replikazzjoni,
ħolqien ta 'indiċi sekondarji.

949
00:40:13,680 --> 00:40:17,620
Kull tip ta 'verament jibred
affarijiet li tista 'tagħmel ma' dak.

950
00:40:17,620 --> 00:40:19,150
>> Tipi ta 'data.

951
00:40:19,150 --> 00:40:23,320
Fl DynamoDB, aħna nappoġġjaw tnejn ewlieni
valur u dokument tad-dejta tipi.

952
00:40:23,320 --> 00:40:26,350
Min-naħa tax-xellug tal-iskrin
hawn, konna ltqajna tipi bażiċi tagħna.

953
00:40:26,350 --> 00:40:27,230
Tipi ta 'valur Ewlenin.

954
00:40:27,230 --> 00:40:30,040
Dawn huma kordi,
numri, u binaries.

955
00:40:30,040 --> 00:40:31,640
>> Allura biss tliet tipi bażiċi.

956
00:40:31,640 --> 00:40:33,700
U allura inti jista 'jkollhom settijiet ta' dawn.

957
00:40:33,700 --> 00:40:37,650
Waħda mill-affarijiet sbieħ dwar NoSQL huwa
inti jista 'jkun fihom arrays huma l-proprjetajiet.

958
00:40:37,650 --> 00:40:42,050
U ma DynamoDB inti jista 'jkun fihom arrays
ta 'tipi bażiċi bħala proprjetà għerq.

959
00:40:42,050 --> 00:40:43,885
>> U allura hemm il-tipi ta 'dokumenti.

960
00:40:43,885 --> 00:40:45,510
Kif ħafna nies huma familjari ma 'JSON?

961
00:40:45,510 --> 00:40:47,130
You guys familjari mal JSON tant?

962
00:40:47,130 --> 00:40:49,380
Huwa bażikament JavaScript,
Għan, Notazzjoni.

963
00:40:49,380 --> 00:40:52,510
Huwa jippermettilek li bażikament
jiddefinixxu struttura ġerarkika.

964
00:40:52,510 --> 00:40:58,107
>> Inti jista 'jaħżen dokument JSON fuq
DynamoDB użu komponenti komuni

965
00:40:58,107 --> 00:41:00,940
jew bini blokki li huma disponibbli
fil-lingwi aktar l-ipprogrammar.

966
00:41:00,940 --> 00:41:03,602
Mela jekk għandek Java, int
tħares lejn mapep u listi.

967
00:41:03,602 --> 00:41:05,060
I tista 'toħloq oġġetti li mappa iż-żona.

968
00:41:05,060 --> 00:41:08,030
Mappa bħala valuri ewlenin
maħżuna bħala li għandu proprjetajiet.

969
00:41:08,030 --> 00:41:10,890
U jista 'jkollhom listi ta'
Valuri fi ħdan dawk il-proprjetajiet.

970
00:41:10,890 --> 00:41:13,490
Inti jista 'jaħżen dan il-kumpless
struttura ġerarkika

971
00:41:13,490 --> 00:41:16,320
bħala attribut singolu
ta 'oġġett DynamoDB.

972
00:41:16,320 --> 00:41:19,010

973
00:41:19,010 --> 00:41:24,460
>> Allura tabelli fl DynamoDB, bħal ħafna
Databases NoSQL, it-tabelli jkollha l-punti.

974
00:41:24,460 --> 00:41:26,469
Fil MongoDB inti
sejħa dawn id-dokumenti.

975
00:41:26,469 --> 00:41:27,760
U jkun il-bażi couch.

976
00:41:27,760 --> 00:41:28,900
Wkoll dokument database.

977
00:41:28,900 --> 00:41:29,941
Inti sejħa dawn id-dokumenti.

978
00:41:29,941 --> 00:41:32,930
Dokumenti jew oġġetti jkollhom attributi.

979
00:41:32,930 --> 00:41:35,850
Jista 'jeżisti Attributi jew
kinux jeżistu fuq l-oġġett.

980
00:41:35,850 --> 00:41:38,520
Fil DynamoDB, hemm
attribut wieħed obbligatorju.

981
00:41:38,520 --> 00:41:43,880
Eżatt bħal f'database relazzjonali,
għandek kodiċi primarju fuq il-mejda.

982
00:41:43,880 --> 00:41:46,010
>> DynamoDB jkun dak li nsejħu ewlieni hash.

983
00:41:46,010 --> 00:41:48,280
Ewlieni Hash għandu jkun uniku.

984
00:41:48,280 --> 00:41:52,580
Allura meta I jiddefinixxu tabella hash,
bażikament dak li jien tgħid

985
00:41:52,580 --> 00:41:54,110
huwa kull oġġett se jkollhom ċavetta hash.

986
00:41:54,110 --> 00:41:58,520
U kull ewlenin hash għandu jkun uniku.

987
00:41:58,520 --> 00:42:01,200
>> Kull oġġett huwa definit
minn dak ċavetta hash uniku.

988
00:42:01,200 --> 00:42:02,940
U jista 'jkun hemm biss wieħed.

989
00:42:02,940 --> 00:42:05,820
Dan huwa OK, imma oftentimes
liema nies għandhom bżonn

990
00:42:05,820 --> 00:42:08,170
hija li jridu huwa dan hash
muftieħ li jagħmlu ftit aktar

991
00:42:08,170 --> 00:42:11,010
milli jkun biss identifikatur uniku.

992
00:42:11,010 --> 00:42:15,240
Oftentimes irridu li jużaw dik ewlenija hash
bħala l-quċċata barmil aggregazzjoni livell.

993
00:42:15,240 --> 00:42:19,160
U l-mod kif nagħmlu dan huwa billi
żżid nsejħu ċavetta firxa.

994
00:42:19,160 --> 00:42:22,460
>> Mela jekk huwa hash biss
mejda, dan għandu jkun uniku.

995
00:42:22,460 --> 00:42:27,040
Jekk huwa tabella hash u l-firxa, il-
kombinazzjoni tal-hash u l-firxa

996
00:42:27,040 --> 00:42:28,640
għandu jkun uniku.

997
00:42:28,640 --> 00:42:30,110
Allura taħseb dwar dan il-mod.

998
00:42:30,110 --> 00:42:32,140
Jekk ikolli forum.

999
00:42:32,140 --> 00:42:39,010
U l-formola tkun suġġetti, hija għandha
postijiet, u għandu risposti.

1000
00:42:39,010 --> 00:42:42,630
>> So I jista 'jkollhom hash
ewlenin, li hija l-ID suġġett.

1001
00:42:42,630 --> 00:42:46,650
UI jista 'jkollhom firxa ewlieni,
li hija l-ID rispons.

1002
00:42:46,650 --> 00:42:49,650
B'dak il-mod jekk nixtieq nikseb l-
tweġibiet għall partikolari suġġett,

1003
00:42:49,650 --> 00:42:52,370
I tista 'biss mistoqsija l hash.

1004
00:42:52,370 --> 00:42:55,190
I tista 'biss jgħidu jagħtu me kollha
l-oġġetti li jkollhom din hash.

1005
00:42:55,190 --> 00:43:01,910
U jien ser tikseb kull mistoqsija
jew il-post għal dan is-suġġett partikolari.

1006
00:43:01,910 --> 00:43:03,910
Dawn aggregazzjonijiet ogħla livell
huma importanti ħafna.

1007
00:43:03,910 --> 00:43:07,370
Huma jappoġġjaw l-aċċess primarja
mudell ta 'l-applikazzjoni.

1008
00:43:07,370 --> 00:43:09,420
Ġeneralment, dan
huwa dak li rridu nagħmlu.

1009
00:43:09,420 --> 00:43:11,780
Irridu li table--
kif inti tagħbija il-mejda,

1010
00:43:11,780 --> 00:43:16,640
irridu li tistruttura d-data
fi ħdan il-mejda b'tali mod

1011
00:43:16,640 --> 00:43:20,140
li l-applikazzjoni tista 'ħafna
malajr irkuprata dawk ir-riżultati.

1012
00:43:20,140 --> 00:43:24,510
U oftentimes l-mod biex tagħmel dan huwa
li jżommu dawn l-aggregazzjonijiet bħala aħna

1013
00:43:24,510 --> 00:43:25,650
daħħal id-data.

1014
00:43:25,650 --> 00:43:31,110
Bażikament, aħna qed tinxtered l-informazzjoni
fil-barmil bright kif niġu fil.

1015
00:43:31,110 --> 00:43:35,210
>> Ċwievet Medda jippermettu hash me--
ċwievet għandhom ikunu ugwaljanza.

1016
00:43:35,210 --> 00:43:39,490
Meta I mistoqsija a hash, jien ngħid
tagħti me a hash li jkun daqs dan.

1017
00:43:39,490 --> 00:43:41,950
Meta I mistoqsija firxa, I
tista 'tgħid tagħti me firxa

1018
00:43:41,950 --> 00:43:47,040
li qed tuża kwalunkwe tip ta '
operatur b'ħafna li aħna nappoġġjaw.

1019
00:43:47,040 --> 00:43:49,200
Agħti me-punti kollha għal hash.

1020
00:43:49,200 --> 00:43:52,520
Huwa ugwali, akbar minn,
inqas minn, ma wieħed jibda,

1021
00:43:52,520 --> 00:43:54,145
ma teżisti bejn dawn iż-żewġ valuri?

1022
00:43:54,145 --> 00:43:56,811
Allura dawn it-tipi ta 'mistoqsijiet firxa
li aħna qed dejjem interessati fil.

1023
00:43:56,811 --> 00:43:59,650
Issa ħaġa waħda dwar id-data, meta
inti tħares lejn aċċess għad-data, meta

1024
00:43:59,650 --> 00:44:02,360
inti aċċess għad-data, huwa
dejjem dwar aggregazzjoni.

1025
00:44:02,360 --> 00:44:05,770
Huwa dejjem dwar ir-rekords
li huma relatati ma 'dan.

1026
00:44:05,770 --> 00:44:10,390
Agħti me kollox hawn that's-- kollha
it-transazzjonijiet fuq din il-karta ta 'kreditu

1027
00:44:10,390 --> 00:44:12,500
għall-aħħar xahar.

1028
00:44:12,500 --> 00:44:13,960
C'est aggregazzjoni.

1029
00:44:13,960 --> 00:44:17,490
>> Kważi dak kollu li għandek tagħmel fil-
database huwa xi tip ta 'aggregazzjoni.

1030
00:44:17,490 --> 00:44:21,530
Allura li jkunu jistgħu jkunu kapaċi li jiddefinixxu
dawn bramel u jagħtuk dawn ivarjaw

1031
00:44:21,530 --> 00:44:24,950
attributi li jkunu jistgħu ifittxu fuq,
dawk id-domandi sinjuri appoġġ ħafna,

1032
00:44:24,950 --> 00:44:27,165
ħafna, mudelli ta 'aċċess applikazzjoni ħafna.

1033
00:44:27,165 --> 00:44:30,990

1034
00:44:30,990 --> 00:44:35,000
>> Allura l-ħaġa oħra ċ-ċavetta hash
ma huwa tagħtina mekkaniżmu

1035
00:44:35,000 --> 00:44:37,740
li jistgħu jqassmu l-informazzjoni madwar.

1036
00:44:37,740 --> 00:44:40,390
Databases NoSQL xogħol aħjar
meta d-data hija indaqs

1037
00:44:40,390 --> 00:44:41,740
mqassma madwar l-cluster.

1038
00:44:41,740 --> 00:44:44,530

1039
00:44:44,530 --> 00:44:47,050
Kif ħafna nies huma familjari
ma hashing algoritmi?

1040
00:44:47,050 --> 00:44:49,860
Meta I say hash u hashing--
minħabba algoritmu hashing

1041
00:44:49,860 --> 00:44:54,140
huwa mod li tkun tista 'tiġġenera
valur każwali minn kull valur mogħti.

1042
00:44:54,140 --> 00:44:59,300
Allura f'dan il-każ partikolari, il-
hash algorithm we run hija ND 5 ibbażata.

1043
00:44:59,300 --> 00:45:04,765
>> U jekk I jkollhom ID, u dan
hija essenzjali hash tiegħi, għandi 1, 2, 3.

1044
00:45:04,765 --> 00:45:07,390
Meta I imexxu l-hash algorithm,
li għaddej biex jiġu lura u jgħidu,

1045
00:45:07,390 --> 00:45:10,800
ukoll 1 ugwali 7B, 2
ugwali 48, 3 ugwali CD.

1046
00:45:10,800 --> 00:45:13,092
Huma qed mifruxa madwar l-ispazju ewlenin.

1047
00:45:13,092 --> 00:45:14,050
U għaliex taħseb li tagħmel dan?

1048
00:45:14,050 --> 00:45:17,120
Minħabba li tiżgura li nista
tpoġġi l-rekords madwar lymph multipli.

1049
00:45:17,120 --> 00:45:19,574
>> Jekk qed nagħmel dan
inkrementalment, 1, 2, 3.

1050
00:45:19,574 --> 00:45:21,990
UI għandhom firxa hash li
runs f'dan il-każ partikolari,

1051
00:45:21,990 --> 00:45:24,785
spazju hash żgħir,
dan jgħaddi minn 00 għal FF,

1052
00:45:24,785 --> 00:45:27,951
allura r-rekords ser jidħlu fil
u dawn qed tmur biex jmorru 1, 2, 3, 4, 5,

1053
00:45:27,951 --> 00:45:30,390
6, 7, 8, 9, 10, 11, 12.

1054
00:45:30,390 --> 00:45:31,800
X'jigri?

1055
00:45:31,800 --> 00:45:34,860
Kull inserit hi tmur għall-istess node.

1056
00:45:34,860 --> 00:45:36,070
You see dak li jfisser I?

1057
00:45:36,070 --> 00:45:40,910
>> Għaliex meta I maqsuma l-ispazju,
u I jinfirxu dawn ir-rekords madwar,

1058
00:45:40,910 --> 00:45:45,950
u I partition, jien ser ngħid
partizzjoni 1 għandha spazju ewlieni 0-54.

1059
00:45:45,950 --> 00:45:47,720
Partition 2 huwa 55-89.

1060
00:45:47,720 --> 00:45:49,780
Partition 3 huwa AA għal FF.

1061
00:45:49,780 --> 00:45:53,740
Mela jekk jien jużaw b'mod lineari inkrementazzjoni
IDs, tista 'tara x'inhu jiġri.

1062
00:45:53,740 --> 00:45:57,410
1, 2, 3, 4, 5, 6, kollha triq kollha sa 54.

1063
00:45:57,410 --> 00:46:00,030
So kif jien tismir l
records fis-sistema,

1064
00:46:00,030 --> 00:46:02,030
kollox jispiċċa ser node wieħed.

1065
00:46:02,030 --> 00:46:03,160
>> Li mhux tajjeb.

1066
00:46:03,160 --> 00:46:04,820
C'est antipattern.

1067
00:46:04,820 --> 00:46:08,760
Fil MongoDB dawn ikollhom din il-problema
jekk inti ma jużawx ċavetta hash.

1068
00:46:08,760 --> 00:46:11,325
MongoDB jagħtik l-għażla
tal hashing-valur ċavetta.

1069
00:46:11,325 --> 00:46:13,950
Għandek dejjem tagħmel dan, jekk
inti qed tuża hash inkrementazzjoni

1070
00:46:13,950 --> 00:46:17,380
ewlieni fil MongoDB, jew tkun taf tkun
nailing kull write li node wieħed,

1071
00:46:17,380 --> 00:46:21,290
u inti tkun tillimita
tikteb throughput tiegħek ħażin.

1072
00:46:21,290 --> 00:46:24,896
>> UDJENZA: Hija li A9 169 fil deċimali?

1073
00:46:24,896 --> 00:46:28,450
>> Rick HOULIHAN: Yeah, huwa
x'imkien madwar hemmhekk.

1074
00:46:28,450 --> 00:46:29,950
A9, I do not know.

1075
00:46:29,950 --> 00:46:32,200
Youd għandek tikseb binarju tiegħi
li calculator deċimali.

1076
00:46:32,200 --> 00:46:34,237
Moħħ tiegħi ma jaħdimx bħal dik.

1077
00:46:34,237 --> 00:46:36,320
UDJENZA: Just wieħed malajr
tal-kummenti Mongo tiegħek.

1078
00:46:36,320 --> 00:46:39,530
Għalhekk hija l-oġġett ID li jiġi
natively ma Mongo tagħmel dan?

1079
00:46:39,530 --> 00:46:40,179

1080
00:46:40,179 --> 00:46:41,470
Rick HOULIHAN: Ma tagħmel dan?

1081
00:46:41,470 --> 00:46:42,970
Jekk inti tispeċifika dan.

1082
00:46:42,970 --> 00:46:45,030
Bil MongoDB, inti għandek l-għażla.

1083
00:46:45,030 --> 00:46:48,930
Tista 'specify-- kull dokument
MongoDB għandu jkollhom ID enfasizzati.

1084
00:46:48,930 --> 00:46:50,300
Dik hija l-valur uniku.

1085
00:46:50,300 --> 00:46:55,240
>> Fil MongoDB inti tista 'tispeċifika
jekk hash jew le.

1086
00:46:55,240 --> 00:46:56,490
Huma biss jagħtuk l-għażla.

1087
00:46:56,490 --> 00:46:58,198
Jekk inti taf li huwa
każwali, l-ebda problema.

1088
00:46:58,198 --> 00:46:59,640
Inti ma għandekx bżonn li tagħmel dan.

1089
00:46:59,640 --> 00:47:04,260
Jekk inti taf li mhuwiex każwali, li
huwa inkrementazzjoni, mela l hash.

1090
00:47:04,260 --> 00:47:06,880
>> Issa l-ħaġa dwar
hashing, ladarba inti hash

1091
00:47:06,880 --> 00:47:08,800
a value-- u dan huwa
għaliex hash keys huma dejjem

1092
00:47:08,800 --> 00:47:13,740
mistoqsijiet uniku, għaliex stajt mibdula
il-valur, issa I ma tistax tagħmel mistoqsija firxa.

1093
00:47:13,740 --> 00:47:15,640
Ma nistax ngħid huwa dan
bejn dan jew dak,

1094
00:47:15,640 --> 00:47:20,800
minħabba li l-valur hash mhux se
li jkun ekwivalenti għall-valur attwali.

1095
00:47:20,800 --> 00:47:24,570
Allura meta inti hash li
ewlenin, huwa ugwaljanza biss.

1096
00:47:24,570 --> 00:47:28,700
Dan huwa għaliex DynamoDB ewlenin hash
mistoqsijiet huma dejjem ugwaljanza biss.

1097
00:47:28,700 --> 00:47:32,090

1098
00:47:32,090 --> 00:47:34,700
>> Allura issa fil-firxa key--
meta I żid dan ċavetta firxa,

1099
00:47:34,700 --> 00:47:38,180
dawk ir-rekords ewlenin firxa kollha meħuda fi u
huma jiksbu maħżuna fuq l-istess partition.

1100
00:47:38,180 --> 00:47:42,430
Allura dawn huma malajr ħafna, faċilment
miksuba għaliex dan huwa l hash,

1101
00:47:42,430 --> 00:47:43,220
dan huwa l-firxa.

1102
00:47:43,220 --> 00:47:44,928
U inti tara kollox
bl-istess hash

1103
00:47:44,928 --> 00:47:48,550
gets maħżuna fuq l-istess spazju partition.

1104
00:47:48,550 --> 00:47:53,889
Tista 'tuża l-muftieħ firxa biex jgħinu
lokalizzar data tiegħek qrib parent tagħha.

1105
00:47:53,889 --> 00:47:55,180
Allura dak am I really tagħmel hawn?

1106
00:47:55,180 --> 00:47:57,320
Din hija waħda li relazzjoni ħafna.

1107
00:47:57,320 --> 00:48:01,490
Ir-relazzjoni bejn ewlieni hash
u l-muftieħ firxa hija waħda li ħafna.

1108
00:48:01,490 --> 00:48:03,490
I jista 'jkollhom keys hash multipli.

1109
00:48:03,490 --> 00:48:07,610
I jista 'jkollhom biss firxa multipli
ċwievet fi ħdan kull ewlenin hash.

1110
00:48:07,610 --> 00:48:11,910
>> Il hash jiddefinixxi l-ġenitur,
il-firxa jiddefinixxi t-tfal.

1111
00:48:11,910 --> 00:48:15,240
Allura tista 'tara hemm Analog hawn
bejn il jibnu relazzjonali

1112
00:48:15,240 --> 00:48:18,840
u l-istess tipi ta '
constructs fl NoSQL.

1113
00:48:18,840 --> 00:48:20,760
Nies jitkellmu dwar
NoSQL bħala nonrelational.

1114
00:48:20,760 --> 00:48:22,200
Mhuwiex nonrelational.

1115
00:48:22,200 --> 00:48:24,680
Data dejjem għandha relazzjonijiet.

1116
00:48:24,680 --> 00:48:28,172
Dawk ir-relazzjonijiet biss
huma mmudellati b'mod differenti.

1117
00:48:28,172 --> 00:48:29,880
Ejja nitkellmu ftit
ftit dwar durabilità.

1118
00:48:29,880 --> 00:48:34,860
Meta inti tikteb lill DynamoDB, jikteb
huma dejjem three-way replikati.

1119
00:48:34,860 --> 00:48:37,550
Li jfisser li għandna tliet AZ.

1120
00:48:37,550 --> 00:48:39,160
Tal AZ huma Żoni Disponibbiltà.

1121
00:48:39,160 --> 00:48:43,430
Inti tista 'taħseb ta' Disponibbiltà
Żona bħala ċentru tad-data

1122
00:48:43,430 --> 00:48:45,447
jew ġabra ta 'ċentri tad-data.

1123
00:48:45,447 --> 00:48:47,780
Dawn l-affarijiet huma ġeografikament
iżolati minn xulxin

1124
00:48:47,780 --> 00:48:51,610
madwar żoni tal tort differenti, madwar
netwerks tal-elettriku u għargħar differenti.

1125
00:48:51,610 --> 00:48:54,510
Waqfien fil AZ wieħed ma jkunx
se jieħdu r-ieħor.

1126
00:48:54,510 --> 00:48:56,890
Huma wkoll marbuta
flimkien ma 'fibra skura.

1127
00:48:56,890 --> 00:49:01,240
Huwa jappoġġa sotto wieħed 1
latency millisekonda bejn AZS.

1128
00:49:01,240 --> 00:49:05,390
Allura repliki ta 'dejta fi żmien reali
kapaċi fil AZS multi.

1129
00:49:05,390 --> 00:49:09,990
>> U skjeramenti AZ oftentimes multi
jissodisfaw ir-rekwiżiti ta 'disponibbiltà għolja

1130
00:49:09,990 --> 00:49:12,930
ta 'organizzazzjonijiet intrapriża l-aktar.

1131
00:49:12,930 --> 00:49:16,139
Allura DynamoDB hija mifruxa
madwar tliet AZS-kontumaċja.

1132
00:49:16,139 --> 00:49:19,430
Aħna biss se għarfien write
meta tnejn minn dawk it-tliet lymph terga 'lura

1133
00:49:19,430 --> 00:49:21,470
u jgħidu, Yeah, I ltqajna.

1134
00:49:21,470 --> 00:49:22,050
Għaliex huwa li?

1135
00:49:22,050 --> 00:49:25,950
Minħabba fuq in-naħa read aħna qed biss
ser jagħtuk l-informazzjoni lura meta

1136
00:49:25,950 --> 00:49:27,570
aħna ġġibu mill żewġ punti ta 'konġunzjoni.

1137
00:49:27,570 --> 00:49:30,490
>> Jekk jien jirreplikaw madwar
tlieta, u jien qari minn sentejn,

1138
00:49:30,490 --> 00:49:32,840
Jien dejjem garantit
li jkollhom mill-inqas wieħed

1139
00:49:32,840 --> 00:49:35,720
ta 'dawk jaqra li jkun il-
aktar kopja attwali ta 'data.

1140
00:49:35,720 --> 00:49:38,340
Dak hu li jagħmel DynamoDB konsistenti.

1141
00:49:38,340 --> 00:49:42,450
Issa inti tista 'tagħżel li jduru
dawk konsistenti jaqra off.

1142
00:49:42,450 --> 00:49:45,070
F'liema każ jien ser ngħid,
I taf taqra biss minn node wieħed.

1143
00:49:45,070 --> 00:49:47,430
U jien ma nistgħux niggarantixxu li għaddej
li tkun l-aktar data attwali.

1144
00:49:47,430 --> 00:49:49,450
>> Mela jekk tikteb dieħel,
għadu ma replikat għadhom,

1145
00:49:49,450 --> 00:49:50,360
int ser tikseb dik il-kopja.

1146
00:49:50,360 --> 00:49:52,220
C'est tinqara eventwalment konsistenti.

1147
00:49:52,220 --> 00:49:54,640
U dak li huwa hu nofs l-ispiża.

1148
00:49:54,640 --> 00:49:56,140
Allura din hija xi ħaġa li wieħed jaħseb dwar.

1149
00:49:56,140 --> 00:50:00,160
Meta inti qed taqra out DynamoDB, u
int twaqqif kapaċità taqra tiegħek

1150
00:50:00,160 --> 00:50:04,430
unitajiet, jekk inti tagħżel eventwalment
konsistenti jgħid, huwa ħafna irħas,

1151
00:50:04,430 --> 00:50:06,010
huwa madwar nofs l-ispiża.

1152
00:50:06,010 --> 00:50:09,342
>> U għalhekk jiffranka l-flus.

1153
00:50:09,342 --> 00:50:10,300
Imma dak li l-għażla tiegħek.

1154
00:50:10,300 --> 00:50:12,925
Jekk inti tixtieq taqra konsistenti jew
li taqra eventwalment konsistenti.

1155
00:50:12,925 --> 00:50:15,720
Dik xi ħaġa li inti tista 'tagħżel.

1156
00:50:15,720 --> 00:50:17,659
>> Ejja nitkellmu dwar indiċijiet.

1157
00:50:17,659 --> 00:50:19,450
Allura aħna semma li
aggregazzjoni ogħla livell.

1158
00:50:19,450 --> 00:50:23,720
Imxejna ltqajna ċwievet hash, u
konna ltqajna ċwievet firxa.

1159
00:50:23,720 --> 00:50:24,320
Li sbieħ.

1160
00:50:24,320 --> 00:50:26,950
U li fuq il-mejda primarja, I
ltqajna ewlieni hash waħda, sibt ċavetta firxa wieħed.

1161
00:50:26,950 --> 00:50:27,783
>> Xi tfisser?

1162
00:50:27,783 --> 00:50:30,410
Stajt ltqajna attribut wieħed li I
tista 'taħdem mistoqsijiet sinjuri kontra.

1163
00:50:30,410 --> 00:50:31,800
Hu l-muftieħ firxa.

1164
00:50:31,800 --> 00:50:35,530
L-attributi oħra fuq dik item--
I tista 'filtru fuq dawk l-attributi.

1165
00:50:35,530 --> 00:50:40,050
Imma I ma tistax tagħmel affarijiet simili, li
jibda bil, jew akbar minn.

1166
00:50:40,050 --> 00:50:40,820
>> Kif nista 'nagħmlu?

1167
00:50:40,820 --> 00:50:42,860
I joħolqu indiċi.

1168
00:50:42,860 --> 00:50:45,340
Hemm żewġ tipi ta '
indiċi fil DynamoDB.

1169
00:50:45,340 --> 00:50:49,002
Indiċi huwa verament
ieħor għan tat-tabella.

1170
00:50:49,002 --> 00:50:50,490
U l-indiċi sekondarji lokali.

1171
00:50:50,490 --> 00:50:51,781
>> L-ewwel waħda aħna ser nitkellmu dwar.

1172
00:50:51,781 --> 00:50:57,740
Secondaries hekk lokali huma jikkoeżistu
fuq l-istess diviżorju kif id-data.

1173
00:50:57,740 --> 00:51:00,240
U bħala tali, huma fuq
l-istess node fiżika.

1174
00:51:00,240 --> 00:51:01,780
Dawn huma dak li nsejħu konsistenti.

1175
00:51:01,780 --> 00:51:04,599
Tifsira, dawn se jirrikonoxxu
il tikteb flimkien mat-tabella.

1176
00:51:04,599 --> 00:51:06,890
Meta l tikteb tidħol fi,
aħna ser jiktbu permezz tal-indiċi.

1177
00:51:06,890 --> 00:51:09,306
Aħna ser write up għall-mejda,
u allura aħna se jirrikonoxxu.

1178
00:51:09,306 --> 00:51:10,490
Allura dak konsistenti.

1179
00:51:10,490 --> 00:51:13,174
Ladarba l-write kien
rikonoxxut mit-tabella,

1180
00:51:13,174 --> 00:51:15,090
huwa garantit li l-
indiċi sekondarja lokali

1181
00:51:15,090 --> 00:51:18,380
se jkollhom l-istess viżjoni ta 'data.

1182
00:51:18,380 --> 00:51:22,390
Imma dak li jippermetti li inti tagħmel huwa
jiddefinixxu ċwievet firxa supplenti.

1183
00:51:22,390 --> 00:51:25,260
>> Għandek tuża l-istess hash
ewlieni bħala l-tabella primarja,

1184
00:51:25,260 --> 00:51:29,050
minħabba li huma ko-lokat fuq il-
istess partizzjoni, u dawn qed konsistenti.

1185
00:51:29,050 --> 00:51:33,110
Imma I tista 'toħloq indiċi
bil-kodiċi f'firxiet differenti.

1186
00:51:33,110 --> 00:51:41,590
Għalhekk, per eżempju, jekk I kellhom manifattur
li kellhom partijiet tabella prima li ġejjin fil.

1187
00:51:41,590 --> 00:51:44,590
U partijiet prima jidħlu fil, u
dawn qed miġbura flimkien skond il-assemblea.

1188
00:51:44,590 --> 00:51:46,840
U forsi hemm recall.

1189
00:51:46,840 --> 00:51:50,240
>> Kwalunkwe parti li kien sar minn din
manifattur wara din id-data,

1190
00:51:50,240 --> 00:51:52,840
I bżonn biex jiġbdu mil-linja tiegħi.

1191
00:51:52,840 --> 00:51:55,950
I tista 'spin indiċi
li tkun tħares,

1192
00:51:55,950 --> 00:52:00,760
aggregazzjoni fid-data tal
manifattura ta 'dik il-parti partikolari.

1193
00:52:00,760 --> 00:52:03,930
Mela jekk mejda ogħla livell tiegħi kien
diġà hashed mill-manifattur,

1194
00:52:03,930 --> 00:52:07,655
forsi kien rranġati fuq naħa ID, I
jistgħu joħolqu indiċi off dik it-tabella

1195
00:52:07,655 --> 00:52:11,140
kif hashed mill-manifattur u
varjat fuq data tal-manifattura.

1196
00:52:11,140 --> 00:52:14,490
U li mod I tista 'tgħid, xi ħaġa li
ġie mmanifatturat bejn dawn id-dati,

1197
00:52:14,490 --> 00:52:16,804
I bżonn biex jiġbdu mill-linja.

1198
00:52:16,804 --> 00:52:18,220
Allura dak indiċi sekondarja lokali.

1199
00:52:18,220 --> 00:52:22,280
>> Dawn għandhom l-effett li
jillimitaw hash ispazju prinċipali tiegħek.

1200
00:52:22,280 --> 00:52:24,360
Minħabba li ko-teżisti
fuq l-istess node ħażna,

1201
00:52:24,360 --> 00:52:26,860
jillimitaw l-muftieħ hash
ispazju għal 10 gigabytes.

1202
00:52:26,860 --> 00:52:28,950
DynamoDB, taħt il-
tabelli, se jaqsmu s

1203
00:52:28,950 --> 00:52:31,380
mejda tiegħek kull 10 gigabytes.

1204
00:52:31,380 --> 00:52:34,760
Meta inti tpoġġi 10 gigs ta 'data fil-, aħna
go [PhH], u aħna żid node ieħor.

1205
00:52:34,760 --> 00:52:38,120

1206
00:52:38,120 --> 00:52:42,070
>> Aħna mhux se taqsam il-LSI
madwar ħitan multipli.

1207
00:52:42,070 --> 00:52:43,200
Aħna ser taqsam il-mejda.

1208
00:52:43,200 --> 00:52:44,679
Iżda aħna mhux se taqsam il-LSI.

1209
00:52:44,679 --> 00:52:46,470
Allura li xi ħaġa
importanti li wieħed jifhem

1210
00:52:46,470 --> 00:52:50,070
huwa jekk int tagħmel ħafna,
ħafna, aggregazzjonijiet kbar ħafna,

1211
00:52:50,070 --> 00:52:53,860
allura int ser tkun limitata
10 gigabytes fuq LSIS tiegħek.

1212
00:52:53,860 --> 00:52:56,640
>> Jekk dan huwa l-każ, nistgħu
użu secondaries globali.

1213
00:52:56,640 --> 00:52:58,630
Secondaries globali huma
verament tabella ieħor.

1214
00:52:58,630 --> 00:53:01,720
Dawn jeżistu kompletament off biex
in-naħa ta 'tabella primarja tiegħek.

1215
00:53:01,720 --> 00:53:04,680
U dawn jippermettu me biex isibu
istruttura kompletament differenti.

1216
00:53:04,680 --> 00:53:08,010
Allura jaħsbu bħala data qed tiġi mdaħħla
f'żewġ tabelli differenti, strutturat

1217
00:53:08,010 --> 00:53:09,220
f'żewġ modi differenti.

1218
00:53:09,220 --> 00:53:11,360
>> I tista 'tiddefinixxi totalment
ċavetta hash differenti.

1219
00:53:11,360 --> 00:53:13,490
I tista 'tiddefinixxi totalment
ċavetta firxa differenti.

1220
00:53:13,490 --> 00:53:15,941
U jien tista 'taħdem din
għal kollox indipendenti.

1221
00:53:15,941 --> 00:53:18,190
Bħala kwistjoni ta 'fatt, stajt
provisioned kapaċità taqra tiegħi

1222
00:53:18,190 --> 00:53:21,090
u jiktbu kapaċità għall tiegħi
indiċi sekondarji globali

1223
00:53:21,090 --> 00:53:24,240
għal kollox indipendenti
tat-tabella primarja tiegħi.

1224
00:53:24,240 --> 00:53:26,640
Jekk I jiddefinixxu f'dak l-indiċi, I tell
huwa kemm jaqraw u jiktbu

1225
00:53:26,640 --> 00:53:28,610
kapaċità li għaddej biex tkun qed tuża.

1226
00:53:28,610 --> 00:53:31,490
>> U li hu separat
mit-tabella primarja tiegħi.

1227
00:53:31,490 --> 00:53:35,240
Issa iż-żewġ indiċi inessu
jiddefinixxu mhux biss hash u firxa ċwievet,

1228
00:53:35,240 --> 00:53:38,610
iżda dawn jippermettu magħna biex
proġett valuri addizzjonali.

1229
00:53:38,610 --> 00:53:44,950
Mela jekk jien tixtieq li aqra l-indiċi,
u nixtieq li nikseb xi sett ta 'data,

1230
00:53:44,950 --> 00:53:48,327
I m'għandhomx bżonn li jmorru lura għall-mejn
tabella li jiksbu l-attributi addizzjonali.

1231
00:53:48,327 --> 00:53:50,660
I tista 'proġett dawk addizzjonali
attributi fit-tabella

1232
00:53:50,660 --> 00:53:53,440
biex tappoġġja l-mudell aċċess.

1233
00:53:53,440 --> 00:53:57,700
Naf aħna qed probabbilment jkollna fis xi
tassew, really-- jkollna fil-ħaxix ħażin

1234
00:53:57,700 --> 00:53:58,910
hawn fuq xi wħud mill dan il-għalf.

1235
00:53:58,910 --> 00:54:02,725
Now I ltqajna biex drift minn dan.

1236
00:54:02,725 --> 00:54:07,320
>> UDJENZA: [inaudible]
muftieħ --table fisser kien hash?

1237
00:54:07,320 --> 00:54:08,840
Il hash oriġinali?

1238
00:54:08,840 --> 00:54:09,340
Multi-paletti?

1239
00:54:09,340 --> 00:54:10,200
>> Rick HOULIHAN: Iva.

1240
00:54:10,200 --> 00:54:11,070
Iva.

1241
00:54:11,070 --> 00:54:15,260
Iċ-ċavetta tabella bażikament
punti lura lill-oġġett.

1242
00:54:15,260 --> 00:54:19,280
Allura indiċi huwa pointer lura għall
l-oġġetti oriġinali fuq il-mejda.

1243
00:54:19,280 --> 00:54:22,910
Issa inti tista 'tagħżel li tibni
indiċi li għandha biss l-muftieħ mejda,

1244
00:54:22,910 --> 00:54:24,840
u l-ebda proprjetajiet oħra.

1245
00:54:24,840 --> 00:54:26,570
U għaliex jista nagħmel dan?

1246
00:54:26,570 --> 00:54:28,570
Well, forsi I jkollhom oġġetti kbar ħafna.

1247
00:54:28,570 --> 00:54:31,660
>> I really bżonn biss li tkun taf which--
mudell aċċess tiegħi jista 'jgħid,

1248
00:54:31,660 --> 00:54:33,760
liema oġġetti fihom din il-proprjetà?

1249
00:54:33,760 --> 00:54:35,780
M'għandhomx bżonn biex jirritorna l-oġġett.

1250
00:54:35,780 --> 00:54:37,800
I biss bżonn tkun taf
liema oġġetti jikkontrollawha.

1251
00:54:37,800 --> 00:54:40,700
Allura inti tista 'tibni indiċijiet
li jkollhom biss il-muftieħ tabella.

1252
00:54:40,700 --> 00:54:43,360
>> Imma dak li primarjament dak
indiċi fid-database huwa għall.

1253
00:54:43,360 --> 00:54:46,280
Huwa biex tkun tista 'malajr
tidentifika liema rekords,

1254
00:54:46,280 --> 00:54:49,470
li fillieri, li
oġġetti fit-tabella għandhom

1255
00:54:49,470 --> 00:54:51,080
il-proprjetajiet li jien tiftix għal.

1256
00:54:51,080 --> 00:54:53,610

1257
00:54:53,610 --> 00:54:54,860
>> GSIs, hekk kif jaħdmu?

1258
00:54:54,860 --> 00:54:58,340
GSIs bażikament huma mhux sinkroniku.

1259
00:54:58,340 --> 00:55:02,570
L-aġġornament tidħol fis-tabella,
tabella hija mbagħad asynchronously aġġornat

1260
00:55:02,570 --> 00:55:03,720
kollha ta 'GSIs tiegħek.

1261
00:55:03,720 --> 00:55:06,680
Dan huwa għaliex GSIs huma
eventwalment konsistenti.

1262
00:55:06,680 --> 00:55:09,440
>> Huwa importanti li wieħed jinnota li
meta int bini GSIs,

1263
00:55:09,440 --> 00:55:13,110
u inti tifhem int ħolqien
dimensjoni oħra ta aggregation--

1264
00:55:13,110 --> 00:55:16,594
issa ejja ngħidu eżempju tajjeb
hawnhekk huwa manifattur.

1265
00:55:16,594 --> 00:55:19,260
I think I jista 'jkollhom tkellem dwar
apparat manifattur mediku.

1266
00:55:19,260 --> 00:55:23,870
Manifatturi ta 'apparat mediku
oftentimes jkollhom partijiet serialized.

1267
00:55:23,870 --> 00:55:28,070
Il-partijiet li jmorru fis
sostituzzjoni tal-ġenbejn kollha

1268
00:55:28,070 --> 00:55:30,200
jkollhom numru tas-serje ftit fuqhom.

1269
00:55:30,200 --> 00:55:33,584
U huma setgħu miljuni u
miljuni u biljuni ta 'partijiet

1270
00:55:33,584 --> 00:55:35,000
fil-mekkaniżmi kollha li huma jittrasportaw.

1271
00:55:35,000 --> 00:55:37,440
Ukoll, jeħtieġ li tinġabar flimkien taħt
dimensjonijiet differenti, il-partijiet kollha

1272
00:55:37,440 --> 00:55:39,520
fl-immuntar, l-
partijiet li kienu saru

1273
00:55:39,520 --> 00:55:41,670
fuq linja partikolari, Kollha
il-partijiet li daħal

1274
00:55:41,670 --> 00:55:44,620
minn manifattur partikolari
f'data partikolari.

1275
00:55:44,620 --> 00:55:47,940
U dawn aggregazzjonijiet kultant
qum fil-biljuni.

1276
00:55:47,940 --> 00:55:50,550
>> So I taħdem ma 'wħud mill
dawn guys li qed ibatu

1277
00:55:50,550 --> 00:55:53,156
għaliex qed joħolqu
dawn aggregazzjonijiet ginormous

1278
00:55:53,156 --> 00:55:54,280
fl indiċijiet sekondarji tagħhom.

1279
00:55:54,280 --> 00:55:57,070
Huma jistgħu jkollhom partijiet prima
tabella li ġejja bħala hash biss.

1280
00:55:57,070 --> 00:55:59,090
Kull parti għandha numru tas-serje uniku.

1281
00:55:59,090 --> 00:56:00,975
I jużaw in-numru tas-serje bħall-hash.

1282
00:56:00,975 --> 00:56:01,600
Huwa sbieħ.

1283
00:56:01,600 --> 00:56:04,160
Tabella My data prima hija mifruxa
kollha madwar l-ispazju ewlenin.

1284
00:56:04,160 --> 00:56:05,930
My [? jiktbu?]
[? inġestjoni?] huwa tal-biża.

1285
00:56:05,930 --> 00:56:07,876
I jieħdu ħafna ta 'data.

1286
00:56:07,876 --> 00:56:09,500
Imbagħad dak li jagħmlu huwa li joħolqu GSI.

1287
00:56:09,500 --> 00:56:12,666
U jien ngħidlek, inti taf liema, I bżonn biex tara
l-partijiet kollha għall dan il-manifattur.

1288
00:56:12,666 --> 00:56:15,060
Ukoll, kollha f'daqqa jien
teħid biljun ringieli,

1289
00:56:15,060 --> 00:56:17,550
u l-għalf minnhom fuq
node wieħed, għaliex meta

1290
00:56:17,550 --> 00:56:21,170
I aggregata bħala l-
ID manifattur bħala l-hash,

1291
00:56:21,170 --> 00:56:25,410
u numru tal-parti kif il-firxa,
mbagħad kollha f'daqqa jien

1292
00:56:25,410 --> 00:56:30,530
tqegħid biljun partijiet fil dak
dan il-manifattur tkun tat me.

1293
00:56:30,530 --> 00:56:34,447
>> Li jista 'jikkawża ħafna
ta 'pressjoni fuq il-GSI,

1294
00:56:34,447 --> 00:56:36,030
għal darb'oħra, għaliex jien tismir node wieħed.

1295
00:56:36,030 --> 00:56:38,350
Jien tqegħid dawn kollha
introduċa fid node wieħed.

1296
00:56:38,350 --> 00:56:40,940
U li l-każ reali użu problematiku.

1297
00:56:40,940 --> 00:56:43,479
Issa, I ltqajna disinn tajjeb
mudell għal kif inti tevita dan.

1298
00:56:43,479 --> 00:56:45,770
U dan huwa wieħed mill-problemi
li jien dejjem jaħdmu magħhom.

1299
00:56:45,770 --> 00:56:49,590
Imma x'jiġri, huwa l-GSI jista
tantx għandu kapaċità write biżżejjed

1300
00:56:49,590 --> 00:56:52,330
biex tkun tista 'timbotta dawk kollha
ringieli ġo node wieħed.

1301
00:56:52,330 --> 00:56:55,390
U dak li jiġri allura huwa l-
primarja, it-tabella klijent,

1302
00:56:55,390 --> 00:57:00,180
il tabella primarja se jkun throttled
minħabba li l-GSI ma jistgħux ilaħħqu.

1303
00:57:00,180 --> 00:57:02,980
Allura daħħal rata tiegħi se
jaqa 'fuq il-mejda primarja

1304
00:57:02,980 --> 00:57:06,230
kif GSI tiegħi tipprova tlaħħaq.

1305
00:57:06,230 --> 00:57:08,850
>> Kull dritt, hekk li GSI, tal LSI,
liema waħda għandi nuża?

1306
00:57:08,850 --> 00:57:12,290
Tal LSI jkunu konsistenti.

1307
00:57:12,290 --> 00:57:13,750
Tal GSI huma eventwalment konsistenti.

1308
00:57:13,750 --> 00:57:17,490
Jekk dan huwa OK, I jirrakkomandaw użu ta '
GSI, dawn qed ħafna aktar flessibbli.

1309
00:57:17,490 --> 00:57:20,270
Tal LSI jistgħu jkunu mudellati bħala GSI.

1310
00:57:20,270 --> 00:57:27,040
U jekk id-daqs tad-data għal kull keys hash fil
ġbir tiegħek jaqbeż 10 gigabytes,

1311
00:57:27,040 --> 00:57:31,050
allura int ser jridu jużaw dan
GSI għaliex huwa biss limitu iebsa.

1312
00:57:31,050 --> 00:57:32,035
>> Kull dritt, hekk skalar.

1313
00:57:32,035 --> 00:57:35,210

1314
00:57:35,210 --> 00:57:37,460
Produzzjoni fl Dynamo DB, inti
dispożizzjoni tista [inaudible]

1315
00:57:37,460 --> 00:57:38,680
throughput għal tabella.

1316
00:57:38,680 --> 00:57:42,740
Aħna għandna klijenti li jkollhom
provisioned 60 billion--

1317
00:57:42,740 --> 00:57:45,970
qed jagħmlu 60 biljun talbiet, regolarment
għaddej b'rata aktar minn miljun talbiet

1318
00:57:45,970 --> 00:57:47,790
kull sekonda fuq tabelli tagħna.

1319
00:57:47,790 --> 00:57:50,360
Hemm verament ebda
limitu teoretiku għal kemm

1320
00:57:50,360 --> 00:57:53,730
u kif fast-tabella
tista 'taħdem fil Dynamo DB.

1321
00:57:53,730 --> 00:57:55,920
Hemm xi soft
limiti fuq il-kont tiegħek

1322
00:57:55,920 --> 00:57:58,170
li nitfgħu fil hemm hekk
li inti ma jmorrux crazy.

1323
00:57:58,170 --> 00:58:00,070
Jekk trid aktar minn
li, mhux problema.

1324
00:58:00,070 --> 00:58:00,820
Inti come jgħidulna.

1325
00:58:00,820 --> 00:58:02,810
Aħna ser dawran sa l-arloġġ.

1326
00:58:02,810 --> 00:58:08,210
>> Kull kont huwa limitat għal xi livell
f'kull servizz, just off BAT

1327
00:58:08,210 --> 00:58:11,920
sabiex il-poplu ma jmorrux crazy
jiksbu ruħhom fi trouble.

1328
00:58:11,920 --> 00:58:12,840
L-ebda limitu fid-daqs.

1329
00:58:12,840 --> 00:58:14,940
Inti tista 'tpoġġi kwalunkwe numru
ta 'oġġetti fuq mejda.

1330
00:58:14,940 --> 00:58:17,620
Id-daqs ta 'punt huwa
limitati għal 400 kilobytes kull wieħed,

1331
00:58:17,620 --> 00:58:20,050
li tkun oġġett mhux l-attributi.

1332
00:58:20,050 --> 00:58:24,200
Allura l-ammont ta 'attributi kollha
huwa limitat għal 400 kilobytes.

1333
00:58:24,200 --> 00:58:27,300
U mbagħad, għandna
li ftit kwistjoni LSI

1334
00:58:27,300 --> 00:58:30,405
mal-limitu ta '10 gigabyte kull hash.

1335
00:58:30,405 --> 00:58:33,280
UDJENZA: Numru Żgħar, jien nieqsa
dak li qed javżak me, li is--

1336
00:58:33,280 --> 00:58:36,830
UDJENZA: Oh, 400 kilobyte
huwa d-daqs massimu għal kull oġġett.

1337
00:58:36,830 --> 00:58:39,570
Allura oġġett għandu l-attributi.

1338
00:58:39,570 --> 00:58:43,950
Allura 400 k huwa d-daqs totali
ta 'dik il-partita, 400 kilobytes.

1339
00:58:43,950 --> 00:58:46,170
Allura ta 'l-attributi
magħquda, id-data kollha

1340
00:58:46,170 --> 00:58:49,140
li fil dawk l-attributi kollha,
rroljati fi daqs totali,

1341
00:58:49,140 --> 00:58:51,140
Bħalissa illum il-limitu oġġett huwa 400 k.

1342
00:58:51,140 --> 00:58:54,390

1343
00:58:54,390 --> 00:58:57,046
Allura skalar darb'oħra, miksub
permezz partizzjoni.

1344
00:58:57,046 --> 00:58:58,920
Throughput hu allokat
fil-livell mejda.

1345
00:58:58,920 --> 00:59:00,160
U hemm verament żewġ pumi.

1346
00:59:00,160 --> 00:59:02,400
Aħna qrajt kapaċità
u jiktbu kapaċità.

1347
00:59:02,400 --> 00:59:05,530
>> Allura dawn huma aġġustati
indipendentement minn xulxin.

1348
00:59:05,530 --> 00:59:08,640
Miżura RCU strettament konsistenti taqra.

1349
00:59:08,640 --> 00:59:13,005
OK, hekk jekk inti qed tgħid Irrid 1000
Tal RCU dawn huma strettament konsistenti,

1350
00:59:13,005 --> 00:59:14,130
dawn huma konsistenti jaqra.

1351
00:59:14,130 --> 00:59:17,130
Jekk tgħid irrid
eventwali konsistenti jgħid,

1352
00:59:17,130 --> 00:59:19,402
inti tista dispożizzjoni 1000
S RCU, int ser

1353
00:59:19,402 --> 00:59:21,840
tikseb 2,000 eventwalment
konsistenti jaqra.

1354
00:59:21,840 --> 00:59:25,940
U nofs il-prezz għal dawk
eventwalment tikkonsisti fil jaqra.

1355
00:59:25,940 --> 00:59:28,520
>> Għal darb'oħra, aġġustat
indipendentement minn xulxin.

1356
00:59:28,520 --> 00:59:32,900
U għandhom l throughput--
Jekk inti jikkunsmaw 100% tal RCU tiegħek,

1357
00:59:32,900 --> 00:59:35,960
int mhux se tinfluwenza l-
disponibbiltà tad-drittijiet tiegħek.

1358
00:59:35,960 --> 00:59:40,161
Allura dawn huma kompletament
indipendenti minn xulxin.

1359
00:59:40,161 --> 00:59:43,160
Dritt kollox, sabiex wieħed mill-affarijiet li
Semmejt fil-qosor kien throttling.

1360
00:59:43,160 --> 00:59:44,320
Throttling huwa ħażin.

1361
00:59:44,320 --> 00:59:47,311
Throttling jindika ħażina ebda SQL.

1362
00:59:47,311 --> 00:59:50,310
Hemm affarijiet li nistgħu nagħmlu biex tgħin
inti ittaffi l-throttling li inti

1363
00:59:50,310 --> 00:59:51,040
qed jesperjenzaw.

1364
00:59:51,040 --> 00:59:53,240
Iżda l-aħjar soluzzjoni
li dan huwa ejja tagħti

1365
00:59:53,240 --> 00:59:58,000
ħarsa lejn dak li qed tagħmel, għaliex
hemm xi anti-mudell fil-logħob hawn.

1366
00:59:58,000 --> 01:00:02,140
>> Dawn l-affarijiet, affarijiet simili mhux uniformi
loads, ċwievet sħun, ħitan sħun.

1367
01:00:02,140 --> 01:00:06,210
Jien laqtu spazju partikolari ewlenin
iebsa ħafna għal xi raġuni partikolari.

1368
01:00:06,210 --> 01:00:07,080
Why am I tagħmel dan?

1369
01:00:07,080 --> 01:00:08,710
Ejja figura li out.

1370
01:00:08,710 --> 01:00:10,427
Jien taħlit data sħun tiegħi ma 'data kiesaħ.

1371
01:00:10,427 --> 01:00:12,510
Jien kiri tabelli tiegħi tikseb
enormi, imma hemm verament

1372
01:00:12,510 --> 01:00:15,970
biss xi wħud subsett tad-data
li tassew interessanti għalija.

1373
01:00:15,970 --> 01:00:20,290
Allura għal data log, per eżempju, ħafna
klijenti, huma jiksbu log data kuljum.

1374
01:00:20,290 --> 01:00:22,490
Huma kisbu ammont kbir ta 'dejta taz-zokk.

1375
01:00:22,490 --> 01:00:25,940
>> Jekk int biss dumping dak kollu li log
nformazzjoni tabella waħda big, matul iż-żmien

1376
01:00:25,940 --> 01:00:28,070
dik it-tabella għaddej biex tikseb enormi.

1377
01:00:28,070 --> 01:00:30,950
Imma jien verament biss interessati fil
aħħar 24 siegħa, l-aħħar sebat ijiem,

1378
01:00:30,950 --> 01:00:31,659
l-aħħar 30 jum.

1379
01:00:31,659 --> 01:00:34,074
Tkun xi tkun il-tieqa ta 'żmien
li jien interessati fil tħares

1380
01:00:34,074 --> 01:00:37,010
għall-avveniment li bothers me, jew
F'każ li interessanti lili,

1381
01:00:37,010 --> 01:00:39,540
dak l-uniku ħin tieqa li għandi bżonn.

1382
01:00:39,540 --> 01:00:42,470
Allura għaliex jien tqegħid 10 snin
valur ta 'dejta taz-zokk fit-tabella?

1383
01:00:42,470 --> 01:00:45,030
Dak li jikkawża huwa
il tabella l framment.

1384
01:00:45,030 --> 01:00:45,880
>> Jiġrilha enormi.

1385
01:00:45,880 --> 01:00:48,340
Dan jibda tifrix
madwar eluf ta lymph.

1386
01:00:48,340 --> 01:00:51,380
U peress kapaċità tiegħek
tant hi baxxa, int

1387
01:00:51,380 --> 01:00:54,090
fil-fatt jillimita r-rata fuq kull
wieħed ta'dawk il-lymph individwali.

1388
01:00:54,090 --> 01:00:57,120
Mela ejja tibda tħares lejn kif
nistgħu roll dik it-tabella fuq.

1389
01:00:57,120 --> 01:01:01,502
Kif nistgħu jimmaniġġjaw li d-data ftit
aħjar li tevita dawn il-problemi.

1390
01:01:01,502 --> 01:01:02,710
U dak li ma look like?

1391
01:01:02,710 --> 01:01:04,370
Dan huwa dak li qisu.

1392
01:01:04,370 --> 01:01:06,790
Dan huwa dak NoSQL ħażin Dehra.

1393
01:01:06,790 --> 01:01:07,830
>> I ltqajna ċavetta sħun hawn.

1394
01:01:07,830 --> 01:01:10,246
Jekk inti tħares fuq in-naħa hawn,
dawn huma ħitan kollha tiegħi.

1395
01:01:10,246 --> 01:01:12,630
Sibt 16 ħitan up here
fuq din id-database partikolari.

1396
01:01:12,630 --> 01:01:13,630
Aħna nagħmlu dan il-ħin kollu.

1397
01:01:13,630 --> 01:01:15,046
I run dan għall-klijenti kull żmien.

1398
01:01:15,046 --> 01:01:16,550
Huwa sejjaħ il-mappa sħana.

1399
01:01:16,550 --> 01:01:20,590
Mappa tas-sħana jgħidlekx me kif int
aċċess ispazju prinċipali tiegħek.

1400
01:01:20,590 --> 01:01:23,700
U dak li din hija javżak me huwa
li hemm hash wieħed partikolari

1401
01:01:23,700 --> 01:01:26,330
li dan Guy jħobb
orribbli ħafna, għaliex huwa

1402
01:01:26,330 --> 01:01:28,250
laqtu tassew, tassew iebsa.

1403
01:01:28,250 --> 01:01:29,260
>> Allura l-blu huwa sbieħ.

1404
01:01:29,260 --> 01:01:29,900
Aħna bħal blu.

1405
01:01:29,900 --> 01:01:30,720
Aħna ma simili aħmar.

1406
01:01:30,720 --> 01:01:33,120
Fejn il-pressjoni Red
gets sa 100%.

1407
01:01:33,120 --> 01:01:35,560
100%, issa int ser tkun throttled.

1408
01:01:35,560 --> 01:01:39,030
Allura kull meta inti tara xi linji ħomor bħall
this-- u huwa mhux biss Dynamo DB--

1409
01:01:39,030 --> 01:01:41,630
kull database NoSQL għandu din il-problema.

1410
01:01:41,630 --> 01:01:44,640
Hemm anti-mudelli li tista
jsuq dawn it-tipi ta 'kundizzjonijiet.

1411
01:01:44,640 --> 01:01:49,070
What I do huwa naħdem mal-klijenti
biex itaffu dawn il-kundizzjonijiet.

1412
01:01:49,070 --> 01:01:51,840
>> U dak li ma look like?

1413
01:01:51,840 --> 01:01:54,260
U dan huwa jkollna l-aktar
minn throughput Dynamo DB,

1414
01:01:54,260 --> 01:01:56,176
imma hija verament jkollna
l-aħjar mill NoSQL.

1415
01:01:56,176 --> 01:01:58,740
Dan mhux ristrett għal Dynamo.

1416
01:01:58,740 --> 01:02:02,050
Dan huwa I definitely--
użati biex jaħdmu fuq Mongo.

1417
01:02:02,050 --> 01:02:04,090
Jien familjari ma 'pjattaformi NoSQL ħafna.

1418
01:02:04,090 --> 01:02:06,830
Kull wieħed għandu dawn it-tipi
ta 'problemi ewlenin sħun.

1419
01:02:06,830 --> 01:02:10,320
Biex tikseb l-aħjar ta 'kwalunkwe NoSQL
database, speċifikament Dynamo DB,

1420
01:02:10,320 --> 01:02:13,320
inti tixtieq li toħloq il-tabelli
fejn l-element ewlieni hash għandha

1421
01:02:13,320 --> 01:02:18,590
numru kbir ta 'valuri distinti,
grad għoli ta 'cardinality.

1422
01:02:18,590 --> 01:02:22,530
Minħabba dan ifisser jien bil-miktub
għal lottijiet ta 'bramel differenti.

1423
01:02:22,530 --> 01:02:24,870
>> Il bramel aktar jien
miktub lill, l-aktar probabbli

1424
01:02:24,870 --> 01:02:29,100
I am li jinfirxu li tagħbija tikteb jew
aqra tagħbija out madwar lymph multipli,

1425
01:02:29,100 --> 01:02:33,560
l-aktar probabbli I am li jkollhom
throughput għolja fuq il-mejda.

1426
01:02:33,560 --> 01:02:37,440
U mbagħad I jridu li l-valuri li jkunu
talab pjuttost b'mod ugwali matul iż-żmien

1427
01:02:37,440 --> 01:02:39,430
u uniformi kemm saltwarjament possibbli.

1428
01:02:39,430 --> 01:02:42,410
Ukoll, li tip ta 'interessanti,
minħabba I ma jistgħux verament

1429
01:02:42,410 --> 01:02:43,960
kontroll meta l-utenti ġejjin.

1430
01:02:43,960 --> 01:02:47,645
Allura biżżejjed li jingħad, jekk aħna mifruxa
affarijiet out madwar l-ispazju ewlenin,

1431
01:02:47,645 --> 01:02:49,270
aħna ser probabbilment ikunu fil-forma aħjar.

1432
01:02:49,270 --> 01:02:51,522
>> Hemm ċertu
ammont ta 'ħin tal-kunsinna

1433
01:02:51,522 --> 01:02:53,230
li int mhux se
Għandu jsir monitoraġġ jistgħu.

1434
01:02:53,230 --> 01:02:55,438
Imma dawn huma verament l-
żewġ dimensjonijiet li għandna,

1435
01:02:55,438 --> 01:02:58,800
ispazju, l-aċċess indaqs
tixrid, iż-żmien, it-talbiet

1436
01:02:58,800 --> 01:03:01,040
li jaslu imqassmin indaqs fil-ħin.

1437
01:03:01,040 --> 01:03:03,110
U jekk dawn iż-żewġ
kondizzjonijiet ikunu milħuqa,

1438
01:03:03,110 --> 01:03:05,610
allura dan huwa dak li huwa
ser look like.

1439
01:03:05,610 --> 01:03:07,890
Dan huwa ħafna nicer.

1440
01:03:07,890 --> 01:03:08,890
Aħna verament kuntenta hawn.

1441
01:03:08,890 --> 01:03:10,432
Imxejna ltqajna mudell aċċess anke ħafna.

1442
01:03:10,432 --> 01:03:13,098
Yeah, forsi int jkollna
ftit pressjoni u mbagħad kull issa,

1443
01:03:13,098 --> 01:03:14,830
iżda xejn verament wisq estensiva.

1444
01:03:14,830 --> 01:03:17,660
Allura huwa aqwa kif ħafna drabi,
meta I xogħol mal-klijenti,

1445
01:03:17,660 --> 01:03:20,670
li l-ewwel grafika ma 'l-ħamra big
bar u dak kollu li ikrah isfar huwa

1446
01:03:20,670 --> 01:03:23,147
kollha fuq il-post, aħna
nikseb jsir l-eżerċizzju

1447
01:03:23,147 --> 01:03:24,980
wara ftit xhur
tal-arkitettura mill-ġdid,

1448
01:03:24,980 --> 01:03:28,050
dawn qed taħdem l-istess eżatt
ammont ta 'xogħol fl-istess tagħbija eżatt.

1449
01:03:28,050 --> 01:03:30,140
U dan huwa dak huwa tfittex simili issa.

1450
01:03:30,140 --> 01:03:36,600
Allura dak ikollok ma NoSQL huwa
schema data li huwa assolutament

1451
01:03:36,600 --> 01:03:38,510
marbuta mal-mudell aċċess.

1452
01:03:38,510 --> 01:03:42,170
>> U inti tista 'jottimizzaw li schema data
biex tappoġġa dak mudell aċċess.

1453
01:03:42,170 --> 01:03:45,490
Jekk inti ma, allura int ser
biex tara dawk it-tipi ta 'problemi

1454
01:03:45,490 --> 01:03:46,710
ma 'dawk ċwievet sħun.

1455
01:03:46,710 --> 01:03:50,518
>> UDJENZA: Well, inevitabbilment xi postijiet
ser ikunu hotter minn oħrajn.

1456
01:03:50,518 --> 01:03:51,450
>> Rick HOULIHAN: Dejjem.

1457
01:03:51,450 --> 01:03:51,960
Dejjem.

1458
01:03:51,960 --> 01:03:54,620
Yeah, I tfisser dejjem hemm
a-- u għal darb'oħra, hemm

1459
01:03:54,620 --> 01:03:56,980
xi mudelli tad-disinn aħna ser jiksbu permezz
li se jitkellmu dwar kif inti jittrattaw

1460
01:03:56,980 --> 01:03:58,480
ma 'dawn aggregazzjonijiet super kbar.

1461
01:03:58,480 --> 01:04:01,260
I mean, I ltqajna li jkollhom magħhom,
kif nistgħu jittrattaw magħhom?

1462
01:04:01,260 --> 01:04:03,760
I ltqajna każ użu pjuttost tajba
li aħna ser nitkellmu dwar għal dan.

1463
01:04:03,760 --> 01:04:05,940
>> Dritt kollox, so ejja nitkellmu
dwar xi klijenti issa.

1464
01:04:05,940 --> 01:04:06,950
Dawn guys huma AdRoll.

1465
01:04:06,950 --> 01:04:08,990
I do not know jekk int
familjari ma 'AdRoll.

1466
01:04:08,990 --> 01:04:10,781
You probabbilment tara minnhom
ħafna fuq il-browser.

1467
01:04:10,781 --> 01:04:14,230
Huma qed ad ri-immirar, dawn qed
l-akbar negozju ad ri-immirar

1468
01:04:14,230 --> 01:04:14,940
hemmhekk.

1469
01:04:14,940 --> 01:04:17,792
Huma normalment regolarment mmexxija fuq
60 biljun transazzjoni kuljum.

1470
01:04:17,792 --> 01:04:20,000
Li qed isir fuq minn miljun
transazzjonijiet kull sekonda.

1471
01:04:20,000 --> 01:04:22,660
Huma ħadthom ltqajna tabella pretty sempliċi
istruttura, it-tabella traffikużi.

1472
01:04:22,660 --> 01:04:26,450
Huwa bażikament biss
muftieħ hash huwa l-cookie,

1473
01:04:26,450 --> 01:04:29,010
il-firxa hija l-demografika
kategorija, u mbagħad

1474
01:04:29,010 --> 01:04:31,220
it-tielet attribut huwa l-punteġġ.

1475
01:04:31,220 --> 01:04:33,720
>> Allura aħna kollha għandhom cookies fil
browser tagħna minn dawn guys.

1476
01:04:33,720 --> 01:04:35,900
U meta inti tmur lil
merkantili parteċipanti,

1477
01:04:35,900 --> 01:04:39,390
huma bażikament punteġġ inti madwar
diversi kategoriji demografiċi.

1478
01:04:39,390 --> 01:04:42,070
Meta inti tmur għal websajt u
tgħid Irrid nara dan ad--

1479
01:04:42,070 --> 01:04:44,920
jew bażikament inti ma jgħidux that--
imma meta inti tmur għall-websajt

1480
01:04:44,920 --> 01:04:47,550
jgħidu inti tixtieq li tara dan ad.

1481
01:04:47,550 --> 01:04:49,370
U dawn imorru nikseb li ad minn AdRoll.

1482
01:04:49,370 --> 01:04:51,130
AdRoll jistenna inti up fuq il-mejda tagħhom.

1483
01:04:51,130 --> 01:04:52,115
Isibu cookie tiegħek.

1484
01:04:52,115 --> 01:04:53,990
Min jirreklama javżak
minnhom, nixtieq xi ħadd

1485
01:04:53,990 --> 01:04:58,632
Min hu middle-aged,
Raġel 40-il sena, fis-isports.

1486
01:04:58,632 --> 01:05:01,590
U huma punteġġ inti f'dawk demografija
u jiddeċiedu jekk jew le

1487
01:05:01,590 --> 01:05:02,740
li l-ad tajba għalik.

1488
01:05:02,740 --> 01:05:10,330
>> Issa dawn ikollhom SLA ma
fornituri reklamar tagħhom

1489
01:05:10,330 --> 01:05:14,510
li jipprovdu sub-10 millisekonda
rispons fuq kull talba waħda.

1490
01:05:14,510 --> 01:05:16,090
Allura li qed jużaw Dynamo DB għal dan.

1491
01:05:16,090 --> 01:05:18,131
Huma qed jolqot lilna
miljun kull sekonda.

1492
01:05:18,131 --> 01:05:21,120
Huma qed kapaċi biex jagħmlu dak kollu tagħhom
lookups, triage li d-data kollha,

1493
01:05:21,120 --> 01:05:26,130
u li tikseb rabta add lura għal dak
jirreklama taħt l-10 millisekondi.

1494
01:05:26,130 --> 01:05:29,800
Huwa tassew pjuttost fenomenali
implimentazzjoni li huma għandhom.

1495
01:05:29,800 --> 01:05:36,210
>> Dawn guys actually--
huma dawn l-guys.

1496
01:05:36,210 --> 01:05:38,010
M'inix ċert jekk huwa dawn guys.

1497
01:05:38,010 --> 01:05:40,127
Jista 'jkun dawn guys.

1498
01:05:40,127 --> 01:05:42,210
Bażikament told us-- no, I
ma naħsibx li kien lilhom.

1499
01:05:42,210 --> 01:05:43,000
Naħseb li kien xi ħadd ieħor.

1500
01:05:43,000 --> 01:05:44,750
I kien qed jaħdem ma '
klijent li told me

1501
01:05:44,750 --> 01:05:47,040
li issa li ħadthom
marret għall Dynamo DB, dawn qed

1502
01:05:47,040 --> 01:05:50,330
infiq aktar flus fuq snacks għall
tim ta 'żvilupp tagħhom kull xahar

1503
01:05:50,330 --> 01:05:52,886
milli jonfqu fuq id-database tagħhom.

1504
01:05:52,886 --> 01:05:54,760
Allura dan ser jagħtik
idea tal-iffrankar fl-ispejjeż

1505
01:05:54,760 --> 01:05:57,889
li tista 'tikseb fil Dynamo DB huwa enormi.

1506
01:05:57,889 --> 01:05:59,430
Kull dritt, dropcam l kumpannija oħra.

1507
01:05:59,430 --> 01:06:02,138
Dawn Guy-xorta of-- jekk taħseb
tal-internet tal-affarijiet, dropcam

1508
01:06:02,138 --> 01:06:05,150
hija bażikament video internet sigurtà.

1509
01:06:05,150 --> 01:06:06,660
Inti tpoġġi kamera tiegħek hemmhekk.

1510
01:06:06,660 --> 01:06:08,180
Camera għandha detector mozzjoni.

1511
01:06:08,180 --> 01:06:10,290
Xi ħadd jidħol tul,
iqanqal punt CUÉ.

1512
01:06:10,290 --> 01:06:13,540
Camera jibda reġistrazzjoni għal waqt till
dan ma jkunx induna xi mozzjoni aktar.

1513
01:06:13,540 --> 01:06:15,310
Tpoġġi li l-video fuq l-internet.

1514
01:06:15,310 --> 01:06:19,800
>> Dropcam kienet kumpanija li hija
bażikament jinqalbu għal Dynamo DB

1515
01:06:19,800 --> 01:06:22,200
minħabba li kienu qed jesperjenzaw
uġigħ jikbru enormi.

1516
01:06:22,200 --> 01:06:25,820
U dak li qalulna,
f'daqqa waħda petabytes ta 'data.

1517
01:06:25,820 --> 01:06:28,070
Huma kellhom ebda idea ta 'servizz tagħhom
se tkun tant suċċess.

1518
01:06:28,070 --> 01:06:32,310
Aktar video deħlin minn YouTube
huwa dak dawn guys huma jkollna.

1519
01:06:32,310 --> 01:06:36,780
Dawn jużaw DynamoDB sabiex jittraċċjaw il-
metadata fuq punti ewlenin video kollha tagħhom.

1520
01:06:36,780 --> 01:06:40,282
>> Sabiex ikollhom bramel S3 huma push
l-artifacts binarja fis.

1521
01:06:40,282 --> 01:06:41,990
U allura dawn għandhom
Rekords Dynamo DB li

1522
01:06:41,990 --> 01:06:44,070
punt nies biex dawk S3 tliet oġġetti.

1523
01:06:44,070 --> 01:06:47,070
Meta jkollhom bżonn li wieħed iħares lejn video,
huma jfittxu up-rekord fl Dynamo DB.

1524
01:06:47,070 --> 01:06:47,903
Ikklikkja l-link.

1525
01:06:47,903 --> 01:06:49,770
Huma jiġbdu l-video minn S3.

1526
01:06:49,770 --> 01:06:51,590
Allura dak it-tip ta 'dak li dan qisu.

1527
01:06:51,590 --> 01:06:53,580
U dan huwa dritta mill-tim tagħhom.

1528
01:06:53,580 --> 01:06:56,010
>> Dynamo DB inaqqas tagħhom
ħin tal-kunsinna għal avvenimenti vidjo

1529
01:06:56,010 --> 01:06:57,590
minn ħamsa sa 10 sekondi.

1530
01:06:57,590 --> 01:07:00,470
Fil-maħżen relazzjonali tagħhom qodma,
huma użati li jkollhom imorru u tesegwixxi

1531
01:07:00,470 --> 01:07:03,780
mistoqsijiet kumplessi multipli lill figura
liema videos biex jiġbdu l isfel,

1532
01:07:03,780 --> 01:07:06,690
għal inqas minn 50 millisekondi.

1533
01:07:06,690 --> 01:07:08,990
Allura huwa aqwa, aqwa
prestazzjoni kemm

1534
01:07:08,990 --> 01:07:12,990
inti tista 'tikseb meta inti jottimizzaw u
inti tixgħel il database sottostanti

1535
01:07:12,990 --> 01:07:15,110
biex tappoġġja l-mudell aċċess.

1536
01:07:15,110 --> 01:07:20,500
Halfbrick, dawn guys, x'inhu,
Frott Ninja I raden huwa ħaġa tagħhom.

1537
01:07:20,500 --> 01:07:22,590
Li runs kollha fuq Dynamo DB.

1538
01:07:22,590 --> 01:07:26,810
U dawn guys, dawn huma kbar
tim ta 'żvilupp, żvilupp kbir

1539
01:07:26,810 --> 01:07:27,670
shop.

1540
01:07:27,670 --> 01:07:29,364
>> Mhux ops tim tajjeb.

1541
01:07:29,364 --> 01:07:31,280
Huma ma għandhom ħafna
tar-riżorsi operazzjoni.

1542
01:07:31,280 --> 01:07:33,940
Huma kienu qed jitħabtu jippruvaw iżommu
infrastruttura applikazzjoni tagħhom sa

1543
01:07:33,940 --> 01:07:34,290
u t-tmexxija.

1544
01:07:34,290 --> 01:07:35,000
Huma daħal lilna.

1545
01:07:35,000 --> 01:07:36,251
Huma ħares lejn dak Dynamo DB.

1546
01:07:36,251 --> 01:07:37,291
Huma qalu, li għalina.

1547
01:07:37,291 --> 01:07:39,470
Huma bnew kollu tagħhom
qafas applikazzjoni fuqha.

1548
01:07:39,470 --> 01:07:43,640
Xi kummenti tassew sbieħ hawn
mit-tim fuq il-ħila tagħhom

1549
01:07:43,640 --> 01:07:46,800
li issa jiffokaw fuq il-bini
il-logħba u mhux

1550
01:07:46,800 --> 01:07:49,010
jkollhom iżommu l-
infrastruttura, li

1551
01:07:49,010 --> 01:07:51,910
kienet qed issir ammont enormi
ta 'overhead għat-tim tagħhom.

1552
01:07:51,910 --> 01:07:56,170
Allura din hija xi ħaġa that-- l
jibbenefikaw li ikollok minn Dynamo DB.

1553
01:07:56,170 --> 01:08:00,930
>> Dritt kollox, jkollna fis
immudellar data hawn.

1554
01:08:00,930 --> 01:08:03,440
U tkellimna ftit dwar
dan wieħed għal wieħed, wieħed għal ħafna,

1555
01:08:03,440 --> 01:08:05,060
u ħafna għal relazzjonijiet tip ħafna.

1556
01:08:05,060 --> 01:08:07,630
U kif taħseb li żżomm dawk fil Dynamo.

1557
01:08:07,630 --> 01:08:10,500
Fl Dynamo DB nużaw
indiċi, ġeneralment,

1558
01:08:10,500 --> 01:08:12,910
biex idawwar il-data minn
flavor għall-oħra.

1559
01:08:12,910 --> 01:08:15,210
Ċwievet hash, ċwievet firxa, u indiċi.

1560
01:08:15,210 --> 01:08:18,540
>> F'dan il-partikolari
eżempju, kif ħafna mill-Istati

1561
01:08:18,540 --> 01:08:23,802
xi rekwiżit ta 'liċenzjar li
biss liċenzja tas-sewwieq wieħed għal kull persuna.

1562
01:08:23,802 --> 01:08:26,510
Inti ma tistax tmur biex taqbad żewġ sewwieq
liċenzji fl-istat ta 'Boston.

1563
01:08:26,510 --> 01:08:27,500
I ma tistax tagħmel dan fil Texas.

1564
01:08:27,500 --> 01:08:28,708
Dik hija tip tal-mod li bih.

1565
01:08:28,708 --> 01:08:32,779
U hekk fil-DMV, għandna lookups, aħna
trid tfittex up liċenzja tas-sewwieq

1566
01:08:32,779 --> 01:08:35,180
bin-numru tas-sigurtà soċjali.

1567
01:08:35,180 --> 01:08:39,990
Irrid li tfittex l-utent dettalji
billi numru tal-liċenzja tas-sewwieq.

1568
01:08:39,990 --> 01:08:43,620
>> Allura aħna jista 'jkollhom tabella ta' utent li
għandha ċavetta hash fuq in-numru tas-serje,

1569
01:08:43,620 --> 01:08:47,830
jew in-numru tas-sigurtà soċjali, u
attributi differenti definit fuq l-oġġett.

1570
01:08:47,830 --> 01:08:49,859
Issa fuq dik it-tabella I
jista jiddefinixxu GSI li

1571
01:08:49,859 --> 01:08:53,370
Flips li madwar li tgħid nixtieq
ewlieni hash fuq il-liċenzja u mbagħad

1572
01:08:53,370 --> 01:08:54,252
l-oġġetti l-oħra.

1573
01:08:54,252 --> 01:08:57,210
Issa jekk irrid għall-mistoqsija u jsibu l-
numru tal-liċenzja għal kull Soċjali partikolari

1574
01:08:57,210 --> 01:08:59,609
Numru tas-Sigurtà, nista '
query il-mejda prinċipali.

1575
01:08:59,609 --> 01:09:02,130
>> Jekk irrid mistoqsija u nixtieq
biex jiksbu l--sigurtà soċjali

1576
01:09:02,130 --> 01:09:05,735
Numru jew attributi oħra minn
numru tal-liċenzja, I tista 'mistoqsija l GSI.

1577
01:09:05,735 --> 01:09:08,689
Dak il-mudell huwa li wieħed
relazzjoni waħda.

1578
01:09:08,689 --> 01:09:12,460
Just a GSI sempliċi ħafna,
flip dawk l-affarijiet madwar.

1579
01:09:12,460 --> 01:09:13,979
Issa, jitkellmu dwar wieħed għal ħafna.

1580
01:09:13,979 --> 01:09:16,450
Wieħed li ħafna huwa bażikament
ċavetta firxa hash tiegħek.

1581
01:09:16,450 --> 01:09:20,510
Fejn irridu jiksbu ħafna ma 'dan
każ użu hija data monitor.

1582
01:09:20,510 --> 01:09:23,880
Data Monitor tiġi fi regolari
intervall, bħall-internet ta 'affarijiet.

1583
01:09:23,880 --> 01:09:26,890
Aħna dejjem jiksbu dawn kollha
rekords li ġejjin fil-ħin kollu.

1584
01:09:26,890 --> 01:09:31,420
>> U nixtieq li ssib l-qari
bejn perjodu ta 'żmien partikolari.

1585
01:09:31,420 --> 01:09:34,220
Huwa query komuni ħafna fil
infrastruttura monitoraġġ.

1586
01:09:34,220 --> 01:09:38,430
Il-mod tmur dwar dan huwa li tinstab
istruttura tal-mejda sempliċi, tabella waħda.

1587
01:09:38,430 --> 01:09:42,250
Stajt ltqajna tabella kejl apparat
ma 'ċavetta hash fuq l-apparat ID.

1588
01:09:42,250 --> 01:09:47,340
UI għandhom ċavetta firxa fuq il-
timestamp, jew f'dan il-każ, il-epika.

1589
01:09:47,340 --> 01:09:50,350
U li tippermetti me tesegwixxi kumpless
mistoqsijiet kontra dik ewlenija firxa

1590
01:09:50,350 --> 01:09:54,950
u jirritorna dawk rekords li
huma relattivi għar-riżultat

1591
01:09:54,950 --> 01:09:56,310
sett li jien infittxu.

1592
01:09:56,310 --> 01:09:58,360
U hija tibni li wieħed
relazzjoni ħafna

1593
01:09:58,360 --> 01:10:02,340
fit-tabella primarja bl-użu
ewlieni hash, l-istruttura ewlenija firxa.

1594
01:10:02,340 --> 01:10:04,600
>> Allura dak it-tip ta mibnija
fit-tabella fl Dynamo DB.

1595
01:10:04,600 --> 01:10:07,290
Meta I jiddefinixxu hash
u tabella firxa t, jien

1596
01:10:07,290 --> 01:10:09,240
li jiddefinixxi waħda li relazzjoni ħafna.

1597
01:10:09,240 --> 01:10:12,770
Huwa relazzjoni ġenitur-wild.

1598
01:10:12,770 --> 01:10:14,620
>> Ejja nitkellmu dwar ħafna
għal ħafna relazzjonijiet.

1599
01:10:14,620 --> 01:10:19,170
U għal dan l-eżempju partikolari,
għal darb'oħra, aħna qed tmur biex tuża s GSI.

1600
01:10:19,170 --> 01:10:23,500
U ejja nitkellmu dwar logħob
xenarju fejn għandi utent partikolari.

1601
01:10:23,500 --> 01:10:26,500
I tixtieq issir taf l-logħob li
hu rreġistrat għall jew playing fi.

1602
01:10:26,500 --> 01:10:29,600
U għal logħba partikolari, I
tixtieq li ssib l-utenti kollha.

1603
01:10:29,600 --> 01:10:31,010
Allura kif nista 'nagħmlu?

1604
01:10:31,010 --> 01:10:34,330
My logħob utent tabella, jien ser
li għandhom ċavetta hash tal user ID

1605
01:10:34,330 --> 01:10:35,810
u ewlieni firxa tal-logħba.

1606
01:10:35,810 --> 01:10:37,810
>> Allura l-utent jista 'jkollhom logħob multipli.

1607
01:10:37,810 --> 01:10:41,380
Huwa wieħed li relazzjoni ħafna bejn
l-utent u l-logħob jilgħab.

1608
01:10:41,380 --> 01:10:43,410
U mbagħad fuq il-GSI,
I ser flip li madwar.

1609
01:10:43,410 --> 01:10:46,679
I ser hash fuq il-logħba u
I ser ivarjaw fuq l-utent.

1610
01:10:46,679 --> 01:10:48,970
Mela jekk jien tixtieq li tikseb l-
logħba tal-utent tal playing fi,

1611
01:10:48,970 --> 01:10:49,950
I ser query il-mejda prinċipali.

1612
01:10:49,950 --> 01:10:52,699
Jekk I rridu nġibu l-utenti kollha
li qed jilagħbu logħba partikolari,

1613
01:10:52,699 --> 01:10:53,887
I query il GSI.

1614
01:10:53,887 --> 01:10:54,970
Allura inti tara kif nagħmlu dan?

1615
01:10:54,970 --> 01:10:58,369
Inti tibni dawn GSI li tappoġġja l-
każ użu, l-applikazzjoni, l-aċċess

1616
01:10:58,369 --> 01:10:59,410
mudell, l-applikazzjoni.

1617
01:10:59,410 --> 01:11:01,440
>> I Jekk bżonn għall-mistoqsija fuq
din id-dimensjoni, let

1618
01:11:01,440 --> 01:11:03,500
me joħolqu indiċi fuq dik id-dimensjoni.

1619
01:11:03,500 --> 01:11:05,850
Jekk jien ma, I do not care.

1620
01:11:05,850 --> 01:11:09,060
U skond il-każ l-użu, I
jistgħu jeħtieġu l-indiċi jew I ma jkunx.

1621
01:11:09,060 --> 01:11:12,390
Jekk huwa wieħed sempliċi għal ħafna,
il tabella primarju huwa multa.

1622
01:11:12,390 --> 01:11:15,860
I Jekk bżonn tagħmel dawn ħafna biex
ħafna; jew I bżonn tagħmel wieħed lil dawk,

1623
01:11:15,860 --> 01:11:18,390
allura forsi I do bżonn
għat-tieni l-indiċi.

1624
01:11:18,390 --> 01:11:20,840
Allura dan kollu jiddependi fuq
dak li nkun qiegħed tipprova tagħmel

1625
01:11:20,840 --> 01:11:24,550
u dak li jien tipprova tikseb jitlestew.

1626
01:11:24,550 --> 01:11:28,000
>> Probabbilment Jien ma jmur biex jonfqu wisq
ħafna ħin jitkellem dwar dokumenti.

1627
01:11:28,000 --> 01:11:31,460
Dan gets ftit, probabbilment,
aktar profonda minn għandna bżonn immorru fis.

1628
01:11:31,460 --> 01:11:33,710
Ejja nitkellmu ftit
espressjoni mistoqsija dwar sinjuri.

1629
01:11:33,710 --> 01:11:37,831
Għalhekk fl Dynamo DB għandna
l-kapaċità li joħolqu

1630
01:11:37,831 --> 01:11:39,330
dak li nsejħu espressjonijiet projezzjoni.

1631
01:11:39,330 --> 01:11:42,660
Espressjonijiet Projezzjoni huma sempliċiment
picking-għelieqi jew il-valuri

1632
01:11:42,660 --> 01:11:44,290
li inti tixtieq li display.

1633
01:11:44,290 --> 01:11:46,000
OK, so I jagħmlu għażla.

1634
01:11:46,000 --> 01:11:48,010
I jagħmlu mistoqsija kontra Dynamo DB.

1635
01:11:48,010 --> 01:11:51,730
U jien ngħidlek, inti taf liema, juru
me biss l-reviżjonijiet ħames stilel

1636
01:11:51,730 --> 01:11:54,544
għal dan il-prodott partikolari.

1637
01:11:54,544 --> 01:11:55,710
Allura li kollox Irrid nara.

1638
01:11:55,710 --> 01:11:57,320
Ma rridx biex tara l-
attributi oħra tal-filliera,

1639
01:11:57,320 --> 01:11:58,319
I biss trid tara dan.

1640
01:11:58,319 --> 01:12:01,209
Huwa biss bħal fil SQL meta inti
jgħidu star selettiv jew mit-tabella,

1641
01:12:01,209 --> 01:12:02,000
ikollok kollox.

1642
01:12:02,000 --> 01:12:05,450
Meta I say isem tagħżel minn
mejda, I biss jiksbu attribut wieħed.

1643
01:12:05,450 --> 01:12:09,070
Huwa l-istess tip ta 'ħaġa fil
Dynamo DB jew databases ieħor NoSQL.

1644
01:12:09,070 --> 01:12:14,510
Espressjonijiet filtru ippermettuli
bażikament tnaqqas ir-riżultat jitniżżlu.

1645
01:12:14,510 --> 01:12:15,540
So I jagħmlu mistoqsija.

1646
01:12:15,540 --> 01:12:17,260
Mistoqsija tista 'terga' lura bi 500 punti.

1647
01:12:17,260 --> 01:12:20,255
Imma I biss jridu li l-oġġetti li
għandhom attribut li tgħid dan.

1648
01:12:20,255 --> 01:12:23,380
OK, so ejja jiffiltraw dawk l-oġġetti
li ma taqbilx ma 'dik mistoqsija partikolari.

1649
01:12:23,380 --> 01:12:25,540
Allura aħna għandna espressjonijiet filtru.

1650
01:12:25,540 --> 01:12:28,310
>> Espressjonijiet Iffiltra jista
'titħaddem fuq kull attribut.

1651
01:12:28,310 --> 01:12:30,260
Dawn mhux qed simili mistoqsijiet firxa.

1652
01:12:30,260 --> 01:12:32,690
Tqajjem mistoqsijiet huma aktar selettivi.

1653
01:12:32,690 --> 01:12:36,470
Mistoqsijiet filtru jeħtieġu me imorru
jiksbu r-riżultati kollha stabbiliti u mbagħad

1654
01:12:36,470 --> 01:12:39,170
jaqtgħu barra l-data Ma rridx.

1655
01:12:39,170 --> 01:12:40,660
Għaliex huwa importanti li?

1656
01:12:40,660 --> 01:12:42,770
Minħabba I taqraha kollha.

1657
01:12:42,770 --> 01:12:46,597
Fil mistoqsija, jien ser jaqraw u
li għaddej biex tkun ġgant dwar id-data.

1658
01:12:46,597 --> 01:12:48,430
U allura jien ser
ifittxu dak li għandi bżonn.

1659
01:12:48,430 --> 01:12:52,080
U jekk jien biss jiddelimitaw a
ftit ringieli, allura dak l-OK.

1660
01:12:52,080 --> 01:12:53,620
Mhuwiex daqshekk ineffiċjenti.

1661
01:12:53,620 --> 01:12:57,800
>> Imma jekk jien qari pile sħiħ ta '
data, just biex ifittxu oġġett wieħed,

1662
01:12:57,800 --> 01:13:01,490
imbagħad jien ser tkun aħjar
mitfi bl-użu query firxa,

1663
01:13:01,490 --> 01:13:03,030
għaliex dan huwa ferm aktar selettiv.

1664
01:13:03,030 --> 01:13:06,330
Huwa ser tiffranka me ħafna ta '
flus, minħabba I tħallas għal dak jinqara.

1665
01:13:06,330 --> 01:13:10,430
Fejn ir-riżultati li jiġi lura
tinqasam dik il-wajer jista 'jkun iżgħar,

1666
01:13:10,430 --> 01:13:11,890
imma jien tħallas għall-jaqra.

1667
01:13:11,890 --> 01:13:14,340
Allura wieħed jifhem kif
int jkollna l-informazzjoni.

1668
01:13:14,340 --> 01:13:16,420
Li l-importanti ħafna fil Dynamo DB.

1669
01:13:16,420 --> 01:13:19,710
>> Espressjoni kondizzjonali, dan huwa dak li
inti tista 'sejħa qfil ottimisti.

1670
01:13:19,710 --> 01:13:28,470
Aġġornament Jekk ma jeżisti, jew jekk dan il-valur
ikun ekwivalenti għal dak I jispeċifika.

1671
01:13:28,470 --> 01:13:31,494
U jekk ikolli ħin timbru fuq
rekord, I jista 'jaqra d-data.

1672
01:13:31,494 --> 01:13:32,535
I jistgħu jinbidlu dik id-data.

1673
01:13:32,535 --> 01:13:35,030
I jista 'jmur write li
data b'lura għad-database.

1674
01:13:35,030 --> 01:13:38,100
Jekk xi ħadd biddel ir-rekord,
l timestamp setgħu nbiddlu.

1675
01:13:38,100 --> 01:13:40,370
U li mod kondizzjonali tiegħi
aġġornament jista 'jgħid aġġornament

1676
01:13:40,370 --> 01:13:42,340
jekk il-timestamp ugwali dan.

1677
01:13:42,340 --> 01:13:46,290
Jew l-aġġornament se jfallu minħabba xi ħadd
Aġġornata-rekord fil-frattemp.

1678
01:13:46,290 --> 01:13:48,290
>> Dak hu li nsejħu qfil ottimisti.

1679
01:13:48,290 --> 01:13:50,670
Dan ifisser li xi ħadd
jista 'jidħol fi u bidla,

1680
01:13:50,670 --> 01:13:53,100
u jien ser jiskopriha
meta mmur lura li tikteb.

1681
01:13:53,100 --> 01:13:56,106
U mbagħad I jistgħu attwalment taqra li
data u jgħidu, oh, huwa mibdul dan.

1682
01:13:56,106 --> 01:13:57,230
I ħtieġa li jagħtu kont għal dak.

1683
01:13:57,230 --> 01:14:00,490
U nista 'bidla l-informazzjoni fil tiegħi
jirreġistraw u japplika ieħor aġġornament.

1684
01:14:00,490 --> 01:14:04,330
Allura inti tista 'qabda dawk inkrimentali
aġġornamenti li jseħħu bejn il-ħin

1685
01:14:04,330 --> 01:14:08,740
li inti taqra l-informazzjoni u l-
ħin li inti tista 'tikteb l-informazzjoni.

1686
01:14:08,740 --> 01:14:11,520
>> UDJENZA: U l-filter
espressjoni fil-fatt ifisser li ma

1687
01:14:11,520 --> 01:14:13,020
fin-numru jew not--

1688
01:14:13,020 --> 01:14:14,316
>> [INTERPOSING VOICES]

1689
01:14:14,316 --> 01:14:16,232
Rick HOULIHAN: I mhux se
jiksbu wisq fis dan.

1690
01:14:16,232 --> 01:14:17,700
Din hija keyword riżervati.

1691
01:14:17,700 --> 01:14:20,130
L-opinjoni lira huwa riservat
keyword fil Dynamo DB.

1692
01:14:20,130 --> 01:14:24,500
Kull database għandha tagħha stess riżervati
ismijiet għal kollezzjonijiet inti ma tistax tuża.

1693
01:14:24,500 --> 01:14:27,240
Dynamo DB, jekk inti tispeċifika
lira quddiem din,

1694
01:14:27,240 --> 01:14:29,310
tista 'tiddefinixxi dawk l-ismijiet up hawn fuq.

1695
01:14:29,310 --> 01:14:31,840
Dan huwa valur referenzjata.

1696
01:14:31,840 --> 01:14:34,880
Huwa probabbilment mhux l-aħjar sintassi biex
jkollhom up hemm għal din id-diskussjoni,

1697
01:14:34,880 --> 01:14:38,090
għaliex jiġrilha fis xi real--
Nixtieq kienu jitkellmu aktar

1698
01:14:38,090 --> 01:14:41,360
dwar li fuq livell aktar profond.

1699
01:14:41,360 --> 01:14:46,130
>> Iżda huwa biżżejjed li jingħad, dan jista
tkun query scan fejn views--

1700
01:14:46,130 --> 01:14:50,190
lanqas fehmiet lira huwa akbar minn 10.

1701
01:14:50,190 --> 01:14:54,660
Huwa valur numeriku, iva.

1702
01:14:54,660 --> 01:14:57,322
Jekk trid, nistgħu nitkellmu dwar
li wara d-diskussjoni.

1703
01:14:57,322 --> 01:15:00,030
Kull dritt, hekk aħna qed jkollna fis
xi xenarji fl-aħjar prattiki

1704
01:15:00,030 --> 01:15:02,000
fejn aħna qed tmur biex jitkellmu
dwar xi apps hawn.

1705
01:15:02,000 --> 01:15:03,810
X'inhuma l-każijiet ta 'użu għal Dynamo DB.

1706
01:15:03,810 --> 01:15:06,120
Liema huma d-disinn
mudelli fil Dynamo DB.

1707
01:15:06,120 --> 01:15:09,110
>> U l-ewwel wieħed aħna qed tmur biex
jitkellmu dwar huwa l-internet ta 'affarijiet.

1708
01:15:09,110 --> 01:15:15,010
Allura irridu jiksbu ħafna of-- I raden,
dak li huwa it-- aktar minn 50%

1709
01:15:15,010 --> 01:15:19,370
ta 'traffiku fuq l-internet f'dawn il-jiem
huwa attwalment iġġenerata minn magni,

1710
01:15:19,370 --> 01:15:21,930
proċessi awtomatizzati, mhux minn bnedmin.

1711
01:15:21,930 --> 01:15:25,140
I tfisser dan ħaġa din ħaġa li
tkun qed iġġorr madwar fil-but tiegħek,

1712
01:15:25,140 --> 01:15:28,840
kemm id-data li din ħaġa hija
fil-fatt tibgħat madwar mingħajr ma inti

1713
01:15:28,840 --> 01:15:30,550
jafu huwa assolutament aqwa.

1714
01:15:30,550 --> 01:15:34,970
Lokalità tiegħek, l-informazzjoni
dwar kif fast int ser.

1715
01:15:34,970 --> 01:15:38,400
Kif taħseb xogħlijiet Google Maps
meta jgħidlek dak it-traffiku huwa.

1716
01:15:38,400 --> 01:15:41,275
Huwa minħabba li hemm miljuni u
miljuni ta 'nies tas-sewqan madwar

1717
01:15:41,275 --> 01:15:44,667
mal-telefon li jibgħat
data kollha fuq il-post il-ħin kollu.

1718
01:15:44,667 --> 01:15:46,500
Allura wieħed mill-affarijiet
dwar dan it-tip ta 'data

1719
01:15:46,500 --> 01:15:50,980
li tidħol fi, data monitor, log
data, data serje tal-ħin, huwa huwa

1720
01:15:50,980 --> 01:15:53,540
normalment biss interessanti
għal xi ftit ta 'żmien.

1721
01:15:53,540 --> 01:15:55,580
Wara dak iż-żmien, huwa
mhux hekk interessanti.

1722
01:15:55,580 --> 01:15:58,390
Allura aħna tkellem dwar, ma let
dawk it-tabelli jikbru mingħajr limiti.

1723
01:15:58,390 --> 01:16:03,410
L-idea hija li forsi stajt ltqajna 24
sigħat jiswew ta 'avvenimenti fil tabella hot tiegħi.

1724
01:16:03,410 --> 01:16:06,160
U dik it-tabella sħun se tkun
provisioned b'rata għolja ħafna,

1725
01:16:06,160 --> 01:16:07,950
għaliex dan huwa tieħu ħafna ta 'data.

1726
01:16:07,950 --> 01:16:10,920
Huwa jieħu ħafna ta 'data
fi u jien qari tagħha ħafna.

1727
01:16:10,920 --> 01:16:14,560
Stajt qbilna ħafna ta 'operazzjoni
mistoqsijiet running kontra dik id-dejta.

1728
01:16:14,560 --> 01:16:18,120
>> Wara 24 siegħa, ħej, inti
taf liema, I do not care.

1729
01:16:18,120 --> 01:16:21,150
Hekk forsi kull I roll nofs il-lejl
tabella tiegħi fuq għal tabella ġdida

1730
01:16:21,150 --> 01:16:22,430
u I deprovision din it-tabella.

1731
01:16:22,430 --> 01:16:26,440
U jien ser jieħdu u l-RCU tal
Down WCU għax-24 siegħa wara

1732
01:16:26,440 --> 01:16:28,630
Jien ma timxix daqs
mistoqsijiet kontra dik id-data.

1733
01:16:28,630 --> 01:16:30,200
Hekk jien ser jiffranka l-flus.

1734
01:16:30,200 --> 01:16:32,940
U forsi 30 jum wara I ma
anki ħtieġa li tinteressana kollha.

1735
01:16:32,940 --> 01:16:35,020
I tista 'tieħu l WCU tal
it-triq kollha sa wieħed,

1736
01:16:35,020 --> 01:16:36,990
għaliex inti taf liema, huwa
qatt se tikseb bil-miktub lill.

1737
01:16:36,990 --> 01:16:38,300
Id-data hija 30 ġurnata.

1738
01:16:38,300 --> 01:16:40,000
Hija qatt bidliet.

1739
01:16:40,000 --> 01:16:44,200
>> U huwa kważi qatt se tikseb tinqara,
so ejja ħu li RCU isfel sa 10.

1740
01:16:44,200 --> 01:16:49,372
U jien iffrankar ton ta 'flus fuq dan
data, u l-ħlas biss għal data sħun tiegħi.

1741
01:16:49,372 --> 01:16:52,330
Allura li l-ħaġa importanti li wieħed iħares
lejn meta inti tħares lejn serje temporali

1742
01:16:52,330 --> 01:16:54,716
data li ġejjin fil fil-volum.

1743
01:16:54,716 --> 01:16:55,590
Dawn huma strateġiji.

1744
01:16:55,590 --> 01:16:58,010
Issa, I tista 'biss let
kollha jmorru għall-istess tabella

1745
01:16:58,010 --> 01:16:59,461
u just let dik it-tabella jikbru.

1746
01:16:59,461 --> 01:17:01,460
Eventwalment, jien ser
tara kwistjonijiet ta 'prestazzjoni.

1747
01:17:01,460 --> 01:17:04,060
Jien ser ikollhom jibdew arkivju
xi wħud li d-data fuq il-mejda,

1748
01:17:04,060 --> 01:17:04,720
dak li mhux.

1749
01:17:04,720 --> 01:17:07,010
>> Ejja ħafna aħjar
disinn applikazzjoni tiegħek

1750
01:17:07,010 --> 01:17:08,900
sabiex inti tista 'topera b'dan il-mod id-dritt.

1751
01:17:08,900 --> 01:17:11,460
Allura huwa biss awtomatiku
fil-kodiċi applikazzjoni.

1752
01:17:11,460 --> 01:17:13,580
F'nofs il-lejl kull lejl
f'rombli il-mejda.

1753
01:17:13,580 --> 01:17:17,170
Forsi dak I bżonn huwa jiżżerżqu
tieqa ta '24 siegħa ta' data.

1754
01:17:17,170 --> 01:17:20,277
Imbagħad fuq bażi regolari jien
sejħa data fuq il-mejda.

1755
01:17:20,277 --> 01:17:22,360
Jien tirqim dan ma '
Xogħol Cron u jien tqegħid

1756
01:17:22,360 --> 01:17:24,160
fuq dawn it-tabelli l-oħra,
kwalunkwe għandek bżonn.

1757
01:17:24,160 --> 01:17:25,940
Mela jekk estensjoni xogħlijiet, li l-kbir.

1758
01:17:25,940 --> 01:17:27,080
Jekk le, raqam dan.

1759
01:17:27,080 --> 01:17:29,640
Imma ejja jżommu dik id-data sħun
bogħod minn data kiesaħ tiegħek.

1760
01:17:29,640 --> 01:17:32,535
Hija ser tiffranka ħafna flus u
jagħmlu tabelli tiegħek aktar prestazzjoni.

1761
01:17:32,535 --> 01:17:35,960

1762
01:17:35,960 --> 01:17:38,210
Allura l-ħaġa li jmiss aħna ser nitkellmu
dwar huwa katalogu tal-prodott.

1763
01:17:38,210 --> 01:17:42,000
Katalogu tal-prodott hija
każ użu pretty komuni.

1764
01:17:42,000 --> 01:17:46,600
Dan huwa attwalment mudell komuni ħafna
li aħna ser tara fil-varjetà ta 'affarijiet.

1765
01:17:46,600 --> 01:17:48,870
You know, Twitter għal
Pereżempju, tweet hot.

1766
01:17:48,870 --> 01:17:51,280
Kulħadd li ġejjin u
ħtif li tweet.

1767
01:17:51,280 --> 01:17:52,680
Katalogu tal-prodott, I ltqajna bejgħ.

1768
01:17:52,680 --> 01:17:54,120
I ltqajna bejgħ sħun.

1769
01:17:54,120 --> 01:17:57,277
Sibt 70,000 talbiet għal kull
tieni li ġejjin għal prodott

1770
01:17:57,277 --> 01:17:58,860
Deskrizzjoni minn katalogu tal-prodott tiegħi.

1771
01:17:58,860 --> 01:18:02,384
Naraw dan fuq il-bejgħ bl-imnut
operazzjoni pjuttost ftit.

1772
01:18:02,384 --> 01:18:03,550
Allura kif nistgħu tittratta dik?

1773
01:18:03,550 --> 01:18:04,924
M'hemm l-ebda mod biex jittrattaw ma 'dak.

1774
01:18:04,924 --> 01:18:07,110
L-utenti kollha tiegħi trid tara
l-istess biċċa ta 'data.

1775
01:18:07,110 --> 01:18:09,410
Huma qed ġejjin fi, fl-istess ħin.

1776
01:18:09,410 --> 01:18:11,920
U dawn qed kollha jagħmlu talbiet
għall-istess biċċa ta 'data.

1777
01:18:11,920 --> 01:18:16,240
Dan jagħti me li ewlieni sħun, li aħmar big
strixxa fuq chart tiegħi li aħna ma simili.

1778
01:18:16,240 --> 01:18:17,720
U dan huwa dak li qisu.

1779
01:18:17,720 --> 01:18:22,290
Allura madwar ispazju ewlieni tiegħi jien jkollna
martellat fil-oġġetti bejgħ.

1780
01:18:22,290 --> 01:18:24,070
Jien jkollna xejn imkien ieħor.

1781
01:18:24,070 --> 01:18:26,050
>> Kif nista tittaffa din il-problema?

1782
01:18:26,050 --> 01:18:28,410
Well, aħna tittaffa din ma cache.

1783
01:18:28,410 --> 01:18:33,630
Cache, inti tpoġġi bażikament fil-memorja
partizzjoni quddiem tad-database.

1784
01:18:33,630 --> 01:18:37,260
Aħna rnexxielna
[Inaudible] cache, kif inti

1785
01:18:37,260 --> 01:18:40,260
tista 'twaqqaf cache tiegħek stess, [inaudible]
cache [? d,?] kulma trid.

1786
01:18:40,260 --> 01:18:42,220
Poġġi li fil quddiem tad-database.

1787
01:18:42,220 --> 01:18:47,250
U li mod inti jista 'jaħżen dik id-data
minn dawk ċwievet sħun sa f'dak cache

1788
01:18:47,250 --> 01:18:49,390
ispazju u tinqara minn ġol-cache.

1789
01:18:49,390 --> 01:18:51,962
>> U allura l-iktar ta 'tiegħek taqra
tibda tfittex bħal dan.

1790
01:18:51,962 --> 01:18:54,920
Sibt dawn kollha cache hits up here
u sibt xejn jiġri stabbiliti hawn

1791
01:18:54,920 --> 01:18:59,330
minħabba database huwa kkostitwit wara l-
cache u l jaqra qatt ma jaslu permezz.

1792
01:18:59,330 --> 01:19:02,520
Jekk nibdel-data fl-
database, I jkollhom jaġġornaw l-cache.

1793
01:19:02,520 --> 01:19:04,360
Nistgħu nużaw xi ħaġa
bħal steams biex tagħmel dan.

1794
01:19:04,360 --> 01:19:07,360
U jien ser jispjegaw kif din taħdem.

1795
01:19:07,360 --> 01:19:09,060
Dritt kollha, messaġġi.

1796
01:19:09,060 --> 01:19:11,180
Email, aħna kollha jużaw l-email.

1797
01:19:11,180 --> 01:19:12,540
>> Dan huwa eżempju pjuttost tajba.

1798
01:19:12,540 --> 01:19:14,950
Imxejna ltqajna xi tip ta 'messaġġi tabella.

1799
01:19:14,950 --> 01:19:17,040
U aħna ltqajna inbox u outbox.

1800
01:19:17,040 --> 01:19:19,760
Dan huwa dak li l-SQL kieku
look like biex tinbena din inbox.

1801
01:19:19,760 --> 01:19:23,350
Aħna tip ta 'l-użu l-istess tip
ta 'strateġija għall-użu GSI, tan-GSI

1802
01:19:23,350 --> 01:19:25,320
għall inbox tiegħi u outbox tiegħi.

1803
01:19:25,320 --> 01:19:27,600
So I ltqajna messaġġi prima li ġejjin
fis-mejda messaġġi tiegħi.

1804
01:19:27,600 --> 01:19:30,194
U l-ewwel approċċ għal din
jista 'jkun, jiġifieri, OK, l-ebda problema.

1805
01:19:30,194 --> 01:19:31,110
Stajt ltqajna messaġġi prima.

1806
01:19:31,110 --> 01:19:33,710
Messaġġi li ġejjin [inaudible],
messaġġ ID, li l-kbir.

1807
01:19:33,710 --> 01:19:35,070
C'est hash unika tiegħi.

1808
01:19:35,070 --> 01:19:38,280
Jien ser toħloq żewġ s GSI, wieħed
għall inbox tiegħi, wieħed għal outbox tiegħi.

1809
01:19:38,280 --> 01:19:40,530
U l-ewwel ħaġa I ser tagħmel
huwa I ser ngħid ewlieni hash tiegħi huwa

1810
01:19:40,530 --> 01:19:43,310
se tkun ir-riċevitur u
Jien ser jirranġaw fid-data.

1811
01:19:43,310 --> 01:19:44,220
Dan huwa meraviljuż.

1812
01:19:44,220 --> 01:19:45,890
Sibt ħsieb sbieħ tiegħi hawn.

1813
01:19:45,890 --> 01:19:47,780
Iżda hemm kwistjoni ftit hawn.

1814
01:19:47,780 --> 01:19:50,891
U inti run fis dan fil
databases relazzjonali ukoll.

1815
01:19:50,891 --> 01:19:52,390
Huma talbu partizzjoni vertikalment.

1816
01:19:52,390 --> 01:19:55,840
Inti tixtieq li żżomm data big tiegħek
bogħod minn data tiegħek ftit.

1817
01:19:55,840 --> 01:20:00,470
>> U r-raġuni għaliex huwa għaliex I gotta
mur aqra l-oġġetti li jiksbu l-attributi.

1818
01:20:00,470 --> 01:20:05,570
U jekk il-korpi tiegħi huma kollha hawn,
imbagħad qari biss ftit punti

1819
01:20:05,570 --> 01:20:08,560
jekk it-tul korp tiegħi huwa
b'medja 256 kilobytes kull wieħed,

1820
01:20:08,560 --> 01:20:10,991
l-matematika gets pretty ikrah.

1821
01:20:10,991 --> 01:20:12,490
Allura ngħid I trid taqra inbox David.

1822
01:20:12,490 --> 01:20:14,520
Inbox David għandha 50 oġġetti.

1823
01:20:14,520 --> 01:20:17,880
Il-medja u d-daqs huwa 256 kilobytes.

1824
01:20:17,880 --> 01:20:21,730
Hawn ratio tal-konverżjoni tiegħi
għal tal RCU huwa erba kilobytes.

1825
01:20:21,730 --> 01:20:24,450
>> OK, ejja jmorru ma
eventwalment konsistenti jaqra.

1826
01:20:24,450 --> 01:20:28,640
Jien xorta tiekol 1600 RCU ta
biss biex jaqra inbox David.

1827
01:20:28,640 --> 01:20:29,950
Ouch.

1828
01:20:29,950 --> 01:20:31,980
OK, issa ejja jaħsbu
dwar kif il-app xogħlijiet.

1829
01:20:31,980 --> 01:20:35,340
Jekk jien fil app email u
Jien tħares lejn inbox tiegħi,

1830
01:20:35,340 --> 01:20:39,680
u nħares lejn il-ġisem ta 'kull messaġġ,
no, jien tħares lejn is-sommarji.

1831
01:20:39,680 --> 01:20:41,850
Jien tħares lejn biss il-headers.

1832
01:20:41,850 --> 01:20:46,310
Mela ejja jibnu struttura tabella
li jixbah aktar dik.

1833
01:20:46,310 --> 01:20:49,470
>> Allura hawnhekk-informazzjoni
li workflow tiegħi ħtiġijiet.

1834
01:20:49,470 --> 01:20:50,890
Huwa fl-inbox tiegħi GSI.

1835
01:20:50,890 --> 01:20:53,800
Hu l-data, il-mittent,
is-suġġett, u mbagħad

1836
01:20:53,800 --> 01:20:56,790
l-ID messaġġ, liema punti
lura għall-mejda messaġġi

1837
01:20:56,790 --> 01:20:57,850
fejn nista 'nikseb il-ġisem.

1838
01:20:57,850 --> 01:21:01,260

1839
01:21:01,260 --> 01:21:04,420
Ukoll, dawn ikunu IDs rekord.

1840
01:21:04,420 --> 01:21:09,850
Huma jindikaw lura lill-
IDs punt fuq il-mejda Dynamo DB.

1841
01:21:09,850 --> 01:21:12,220
Kull indiċi dejjem creates--
dejjem għandu l-oġġett

1842
01:21:12,220 --> 01:21:15,750
ID bħala parti of-- li
jiġi ma 'l-indiċi.

1843
01:21:15,750 --> 01:21:17,414
>> Kull dritt.

1844
01:21:17,414 --> 01:21:19,080
UDJENZA: Huwa jirrakkonta huwa fejn huwa maħżun?

1845
01:21:19,080 --> 01:21:21,420
Rick HOULIHAN: Iva, jirrakkonta
exactly-- dan huwa eżattament dak li tagħmel.

1846
01:21:21,420 --> 01:21:22,644
Hija tgħid hawnhekk rekord ġdid tiegħi.

1847
01:21:22,644 --> 01:21:24,310
U dan ser jiġi lura għal rekord ġdid tiegħi.

1848
01:21:24,310 --> 01:21:26,460
Eżattament.

1849
01:21:26,460 --> 01:21:29,490
OK, hekk issa inbox tiegħi huwa
fil-fatt ferm iżgħar.

1850
01:21:29,490 --> 01:21:32,210
U dan fil-fatt jappoġġja
il-fluss ta 'app email.

1851
01:21:32,210 --> 01:21:34,230
Allura inbox tiegħi, I ikklikkja.

1852
01:21:34,230 --> 01:21:38,160
I jmorru flimkien u I ikklikkja fuq il-messaġġ,
dan huwa meta I-ħtieġa li jmorru jiksbu l-korp,

1853
01:21:38,160 --> 01:21:40,180
għaliex jien ser
mur fehma differenti.

1854
01:21:40,180 --> 01:21:43,870
Mela jekk inti taħseb dwar MVC tip ta '
qafas, kontrollur fehma mudell.

1855
01:21:43,870 --> 01:21:46,120
>> Il-mudell fih l
data li l-bżonnijiet ħsieb

1856
01:21:46,120 --> 01:21:48,130
u l-kontrollur jinteraġixxi ma.

1857
01:21:48,130 --> 01:21:51,670
Meta I jibdlu l-qafas, meta
Nibdel il-perspettiva,

1858
01:21:51,670 --> 01:21:55,080
huwa OK li jmorru lura għall-
server u repopulate-mudell,

1859
01:21:55,080 --> 01:21:56,860
għaliex dan huwa dak l-utent jistenna.

1860
01:21:56,860 --> 01:22:00,530
Meta jibdlu l-opinjonijiet, li meta
nistgħu mmorru lura għad-database.

1861
01:22:00,530 --> 01:22:02,480
Allura email, ikklikkja.

1862
01:22:02,480 --> 01:22:03,710
I infittex-ġisem.

1863
01:22:03,710 --> 01:22:04,330
Vjaġġ bir-ritorn.

1864
01:22:04,330 --> 01:22:05,680
Mur jiksbu l-korp.

1865
01:22:05,680 --> 01:22:06,950
>> I jaqra ħafna inqas data.

1866
01:22:06,950 --> 01:22:09,960
Jien biss qari l-korpi li
David bżonn meta hu għandu bżonn minnhom.

1867
01:22:09,960 --> 01:22:14,230
U jien ma jinħaraqx fl-1600
Tal RCU biss biex juru inbox tiegħu.

1868
01:22:14,230 --> 01:22:17,670
Allura issa that-- dan huwa l-mod
li LSI jew GSI-- jien sorry,

1869
01:22:17,670 --> 01:22:19,900
GSI, tkun taħdem out.

1870
01:22:19,900 --> 01:22:25,450
Imxejna ltqajna hash tagħna lill-benefiċjarju.

1871
01:22:25,450 --> 01:22:27,030
Imxejna ltqajna l-muftieħ firxa fid-data.

1872
01:22:27,030 --> 01:22:31,380
U konna ltqajna l-attributi proġettati
li għandna bżonn biss li tappoġġja l-fehma.

1873
01:22:31,380 --> 01:22:34,300
>> Aħna dawwar li għall-outbox.

1874
01:22:34,300 --> 01:22:35,770
Hash fuq mittent.

1875
01:22:35,770 --> 01:22:39,612
U fl-qofol, għandna
l sbieħ ħafna, il-fehma nadif.

1876
01:22:39,612 --> 01:22:41,570
U huwa basically-- aħna
jkollhom dan messaġġi sbieħ

1877
01:22:41,570 --> 01:22:45,870
tabella li l-jiġu mifruxa nicely għaliex
huwa hash biss, hashed ID messaġġ.

1878
01:22:45,870 --> 01:22:51,750
U għandna żewġ indiċijiet li
huma jduru off ta 'dik it-tabella.

1879
01:22:51,750 --> 01:22:57,411
Kull dritt, hekk idea hija ma
iżommu l-kbira ta 'dejta u din id-data żgħir

1880
01:22:57,411 --> 01:22:57,910
flimkien.

1881
01:22:57,910 --> 01:23:00,700
Partition vertikalment,
partition dawk it-tabelli.

1882
01:23:00,700 --> 01:23:03,150
Ma taqra data inti ma għandekx.

1883
01:23:03,150 --> 01:23:04,850
Dritt kollox, logħob.

1884
01:23:04,850 --> 01:23:06,990
Aħna kollha simili games.

1885
01:23:06,990 --> 01:23:10,902
Mill-inqas I games simili imbagħad.

1886
01:23:10,902 --> 01:23:12,735
Sabiex xi wħud mill-affarijiet
li nittrattaw meta

1887
01:23:12,735 --> 01:23:14,193
aħna qed jaħsbu dwar logħob, right?

1888
01:23:14,193 --> 01:23:16,999
Logħob f'dawn il-jiem, speċjalment mobbli
logħob, huwa kollha dwar il-ħsieb.

1889
01:23:16,999 --> 01:23:19,540
U jien ser jduru hawn
Ftit ftit bogħod mill DynamoDB.

1890
01:23:19,540 --> 01:23:21,373
Jien ser iġibu fit
xi wħud mill-diskussjoni

1891
01:23:21,373 --> 01:23:24,240
madwar xi wħud mill-
teknoloġiji oħra AWS.

1892
01:23:24,240 --> 01:23:28,930
>> Iżda l-idea dwar logħob huwa li wieħed jaħseb
dwar f'termini ta 'APIs, APIs li huma,

1893
01:23:28,930 --> 01:23:31,730
ġeneralment, HTTP u JSON.

1894
01:23:31,730 --> 01:23:34,550
Huwa mod kif games mobbli tip ta '
jinteraġixxu ma 'truf lura tagħhom.

1895
01:23:34,550 --> 01:23:35,850
Huma jagħmlu JSON kollokament.

1896
01:23:35,850 --> 01:23:40,660
Huma jiksbu data, u dan kollu,
ġeneralment, fil APIs JSON sbieħ.

1897
01:23:40,660 --> 01:23:44,950
>> Affarijiet simili nikseb ħbieb, jiksbu
id-data leaderboard, skambju,

1898
01:23:44,950 --> 01:23:47,699
utent kontenut iġġenerat,
push back up għas-sistema,

1899
01:23:47,699 --> 01:23:49,740
dawn huma tipi ta 'affarijiet
li aħna qed tmur biex tagħmel.

1900
01:23:49,740 --> 01:23:52,542
Data assi binarju, din id-data
jista 'ma jpoġġux fid-database.

1901
01:23:52,542 --> 01:23:54,250
Dan jista 'tiltaqa fi
oġġett maħżen, id-dritt?

1902
01:23:54,250 --> 01:23:56,541
Iżda l-database se
jispiċċaw javżak-sistema,

1903
01:23:56,541 --> 01:23:59,140
javżak l-applikazzjoni
fejn imorru tiksbu.

1904
01:23:59,140 --> 01:24:03,550
U inevitabbilment, multiplayer
servers, infrastruttura aħħar lura,

1905
01:24:03,550 --> 01:24:06,180
u ddisinjati għall għolja
disponibbiltà u iskalabbiltà.

1906
01:24:06,180 --> 01:24:09,400
Allura dawn huma affarijiet li aħna kollha jridu
fl-infrastruttura tal-logħob tal-lum.

1907
01:24:09,400 --> 01:24:12,160
>> Mela ejja tagħti ħarsa lejn
dak li qisu.

1908
01:24:12,160 --> 01:24:16,070
Ghandek aħħar back qalba,
sempliċi ħafna.

1909
01:24:16,070 --> 01:24:19,880
Imxejna ltqajna sistema hawn ma
żoni disponibbiltà multipli.

1910
01:24:19,880 --> 01:24:23,780
Aħna tkellimna dwar AZS bħala being-- jaħsbu
minnhom bħala ċentri tad-data separati.

1911
01:24:23,780 --> 01:24:26,040
Ċentru tad-data aktar minn wieħed
per AZ, iżda li OK,

1912
01:24:26,040 --> 01:24:28,831
biss jaħsbu minnhom bħala data separata
ċentri li huma ġeografikament

1913
01:24:28,831 --> 01:24:30,090
u t-tort iżolati.

1914
01:24:30,090 --> 01:24:32,172
>> Aħna qed tmur biex ikollhom
każijiet KE2 koppja.

1915
01:24:32,172 --> 01:24:33,880
Aħna qed tmur biex ikollhom
xi server back-end.

1916
01:24:33,880 --> 01:24:35,800
Forsi jekk int wirt
arkitettura, aħna qed

1917
01:24:35,800 --> 01:24:38,920
użu nsejħu RDS,
servizzi ta 'database relazzjonali.

1918
01:24:38,920 --> 01:24:42,040
Jista 'jkun MSSQL, MySQL,
jew xi ħaġa bħal dik.

1919
01:24:42,040 --> 01:24:47,080
Dan huwa mod applikazzjonijiet ħafna
huma mfassla llum.

1920
01:24:47,080 --> 01:24:49,594
>> Well we tista 'tixtieq li tmur ma
dan huwa meta aħna iskala out.

1921
01:24:49,594 --> 01:24:51,510
Aħna ser imorru quddiem u mqiegħda
il barmil S3 up hemm.

1922
01:24:51,510 --> 01:24:54,200
U li barmil S3, minflok li jservu
up dawk l-oġġetti minn servers-- tagħna

1923
01:24:54,200 --> 01:24:55,220
stajna nagħmlu dan.

1924
01:24:55,220 --> 01:24:57,210
Inti tpoġġi kollha binarja tiegħek
oġġetti fuq servers tiegħek

1925
01:24:57,210 --> 01:24:59,751
u tista 'tuża dawk server
każijiet biex iservu dik id-data up.

1926
01:24:59,751 --> 01:25:01,860
Imma dak li pretty għaljin.

1927
01:25:01,860 --> 01:25:05,107
>> Aħjar mod biex tagħmel hu jimxi 'l quddiem u
tqiegħed dawn l-oġġetti fi barmil S3.

1928
01:25:05,107 --> 01:25:06,315
S3 huwa oġġett repożitorji.

1929
01:25:06,315 --> 01:25:10,860
Huwa mibni speċifikament għal
jservu up dawn it-tipi ta 'affarijiet.

1930
01:25:10,860 --> 01:25:13,690
U ejja dawk il-klijenti jitolbu
direttament minn dawk bramel oġġett,

1931
01:25:13,690 --> 01:25:15,390
iħottu l servers.

1932
01:25:15,390 --> 01:25:17,020
Allura aħna qed jibdew iżidu hawn.

1933
01:25:17,020 --> 01:25:19,140
>> Issa sirna utenti madwar id-dinja.

1934
01:25:19,140 --> 01:25:19,730
Sibt utenti.

1935
01:25:19,730 --> 01:25:23,380
I-ħtieġa li jkollhom kontenut lokalment
jinsab qrib dawn l-utenti, id-dritt?

1936
01:25:23,380 --> 01:25:26,200
Stajt ħolqot barmil S3
kif sors repożitorju tiegħi.

1937
01:25:26,200 --> 01:25:29,370
U jien ser quddiem li ma
id-distribuzzjoni CloudFront.

1938
01:25:29,370 --> 01:25:31,720
>> CloudFront huwa CD u
netwerk tal-kunsinna kontenut.

1939
01:25:31,720 --> 01:25:35,750
Bażikament hemm bżonn data li inti tispeċifika
u ħażniet sigrieti dan kollu fuq l-internet

1940
01:25:35,750 --> 01:25:39,230
sabiex l-utenti kullimkien jista 'jkollhom
tweġiba mgħaġġla ħafna meta

1941
01:25:39,230 --> 01:25:40,960
huma jitolbu dawk l-oġġetti.

1942
01:25:40,960 --> 01:25:41,960
>> Allura ikollok idea.

1943
01:25:41,960 --> 01:25:48,230
Int tip ta 'lieva l-
aspetti ta 'AWS hawn biex tikseb dan isir.

1944
01:25:48,230 --> 01:25:50,790
U eventwalment, aħna tarmi
fi grupp skalar auto.

1945
01:25:50,790 --> 01:25:52,737
Allura każijiet AC2 tagħna
ta servers logħba tagħna,

1946
01:25:52,737 --> 01:25:54,820
kif tibda tikseb aktar mimlija
u aktar mimlija u aktar mimlija,

1947
01:25:54,820 --> 01:25:57,236
dawn ser biss spin ieħor
eżempju, spin eżempju ieħor,

1948
01:25:57,236 --> 01:25:58,210
spin eżempju ieħor.

1949
01:25:58,210 --> 01:26:02,090
Allura l-teknoloġija AWS għandu, huwa
jippermettilek tispeċifika l-parametri

1950
01:26:02,090 --> 01:26:04,650
madwarhom servers tiegħek se jikbru.

1951
01:26:04,650 --> 01:26:08,110
Allura inti jista 'jkollhom numru n ta' servers
hemmhekk fi kwalunkwe ħin partikolari.

1952
01:26:08,110 --> 01:26:11,870
U jekk tagħbija tiegħek tmur bogħod, dawn ser
tiċkien, in-numru se tiċkien.

1953
01:26:11,870 --> 01:26:15,250
U jekk it-tagħbija taqa 'lura,
dan ser jikbru lura, elastically.

1954
01:26:15,250 --> 01:26:17,050
>> Allura dan jistenna kbira.

1955
01:26:17,050 --> 01:26:19,800
Imxejna qbilna ħafna ta 'każijiet KE2.

1956
01:26:19,800 --> 01:26:21,671
Nistgħu npoġġu cache fil
quddiem tad-databases,

1957
01:26:21,671 --> 01:26:23,045
jippruvaw u taċċellera l-databases.

1958
01:26:23,045 --> 01:26:25,030
Il-punt li jmiss pressjoni
tipikament nies ara

1959
01:26:25,030 --> 01:26:28,850
hija huma iskala logħba bl-użu ta
sistema ta 'database relazzjonali.

1960
01:26:28,850 --> 01:26:30,790
Jeez, id-database
prestazzjoni hija terribbli.

1961
01:26:30,790 --> 01:26:31,932
Kif nistgħu tittejjeb dik?

1962
01:26:31,932 --> 01:26:33,640
Ejja nippruvaw tqegħid
cache quddiem dan.

1963
01:26:33,640 --> 01:26:36,780
>> Ukoll, cache ma taħdimx
hekk kbir fil-logħob, id-dritt?

1964
01:26:36,780 --> 01:26:39,330
Għal-logħob, kitba huwa uġigħ.

1965
01:26:39,330 --> 01:26:40,930
Logħob huma ħafna jiktbu tqal.

1966
01:26:40,930 --> 01:26:43,610
Cache ma taħdimx meta int
jiktbu tqil għaliex inti ħadthom dejjem

1967
01:26:43,610 --> 01:26:44,610
qbilna li taġġorna l-cache.

1968
01:26:44,610 --> 01:26:47,780
Inti taġġorna l-cache, huwa
irrilevanti li jiġu caching.

1969
01:26:47,780 --> 01:26:49,780
Huwa fil-fatt biss xogħol żejjed.

1970
01:26:49,780 --> 01:26:51,970
>> Għalhekk, fejn immorru hawn?

1971
01:26:51,970 --> 01:26:54,400
You ħadthom ltqajna ostaklu kbir
stabbiliti hemmhekk fid-database.

1972
01:26:54,400 --> 01:26:57,661
U l-post biex imorru
ovvjament huwa taqsim.

1973
01:26:57,661 --> 01:26:59,410
Partizzjoni mhuwiex
faċli li tagħmel meta int

1974
01:26:59,410 --> 01:27:01,900
jittrattaw ma 'databases relazzjonali.

1975
01:27:01,900 --> 01:27:05,080
Ma 'databases relazzjonali, int
responsabbli għat-tmexxija, b'mod effettiv,

1976
01:27:05,080 --> 01:27:06,210
l-ispazju ewlenin.

1977
01:27:06,210 --> 01:27:10,527
Inti qed tgħid utenti bejn A u M
mur hawn, bejn N u Z jmorru hemm.

1978
01:27:10,527 --> 01:27:12,360
U int jaqilbu
madwar l-applikazzjoni.

1979
01:27:12,360 --> 01:27:15,000
Allura int jittrattaw
dan is-sors tad-data partition.

1980
01:27:15,000 --> 01:27:18,670
Inti għandek limitazzjonijiet transazzjonali
li ma jasalx sal ħitan.

1981
01:27:18,670 --> 01:27:20,560
You ħadthom ltqajna kull tip ta '
messiness li int

1982
01:27:20,560 --> 01:27:23,040
jittrattaw stabbiliti hemmhekk jippruvaw
biex jittrattaw skalar out

1983
01:27:23,040 --> 01:27:25,120
u bini ta 'infrastruttura akbar.

1984
01:27:25,120 --> 01:27:27,284
Huwa biss l-ebda gost.

1985
01:27:27,284 --> 01:27:30,930
>> UDJENZA: Allura inti tgħid li
punti sors tiżdied tħaffef

1986
01:27:30,930 --> 01:27:31,430
il-proċess?

1987
01:27:31,430 --> 01:27:32,513
Rick HOULIHAN: Żieda?

1988
01:27:32,513 --> 01:27:33,520
Punti Sors: udjenza.

1989
01:27:33,520 --> 01:27:34,410
Rick HOULIHAN: punti Sors?

1990
01:27:34,410 --> 01:27:37,500
UDJENZA: Mill-informazzjoni,
fejn l-informazzjoni ġejja minn?

1991
01:27:37,500 --> 01:27:38,250
Rick HOULIHAN: Le

1992
01:27:38,250 --> 01:27:41,820
Dak li jien tgħid huwa tiżdied il-
numru ta 'ħitan fil-maħżen tad-data

1993
01:27:41,820 --> 01:27:44,060
itejjeb throughput.

1994
01:27:44,060 --> 01:27:48,300
Allura dak li qed jiġri hawn huwa l-utenti
ġejjin fil-każ KE2 up here,

1995
01:27:48,300 --> 01:27:50,780
ukoll, jekk għandi bżonn utent
Li l-li M, I ser imorru here.

1996
01:27:50,780 --> 01:27:53,560
Mill N p, I ser imorru here.

1997
01:27:53,560 --> 01:27:55,060
Minn P sa Z, I ser imorru here.

1998
01:27:55,060 --> 01:27:57,120
>> UDJENZA: OK, dawk hekk dawn huma
kollha maħżuna fil-lymph differenti?

1999
01:27:57,120 --> 01:27:57,911
>> Rick HOULIHAN: Iva.

2000
01:27:57,911 --> 01:28:00,210
Think ta 'dawn bħala
silos differenti ta 'data.

2001
01:28:00,210 --> 01:28:01,660
Allura int wara li tagħmel dan.

2002
01:28:01,660 --> 01:28:02,910
Jekk inti qed tipprova tagħmel
dan, jekk inti qed tipprova

2003
01:28:02,910 --> 01:28:05,730
iskala fuq pjattaforma relazzjonali,
dan huwa dak li qed isir.

2004
01:28:05,730 --> 01:28:08,100
Inti qed tieħu data u
int qtugħ l-isfel.

2005
01:28:08,100 --> 01:28:10,975
U int taqsim dan madwar
każi multipli tad-database.

2006
01:28:10,975 --> 01:28:13,580
U int ġestjoni kollu li
fil-livell applikazzjoni.

2007
01:28:13,580 --> 01:28:14,729
Hija l-ebda gost.

2008
01:28:14,729 --> 01:28:15,770
Mela xi do irridu imorru?

2009
01:28:15,770 --> 01:28:20,240
Aħna rridu li jmorru DynamoDB, ġestita kompletament,
NoSQL jaħżen id-data, dispożizzjoni throughput.

2010
01:28:20,240 --> 01:28:22,680
Aħna nużaw indiċijiet sekondarji.

2011
01:28:22,680 --> 01:28:26,154
Huwa bażikament HTTP API u
jinkludi dokument appoġġ.

2012
01:28:26,154 --> 01:28:28,570
Allura inti ma għandekx għalfejn tinkwieta
dwar xi li tqassim.

2013
01:28:28,570 --> 01:28:30,740
Aħna tagħmel dan kollu għalik.

2014
01:28:30,740 --> 01:28:33,260
Allura issa, minflok, inti
biss jikteb lill-tabella.

2015
01:28:33,260 --> 01:28:36,490
Jekk it-tabella għandha tiġi maqsuma,
li jiġri wara l-kwinti.

2016
01:28:36,490 --> 01:28:40,642
Int kompletament iżolati
minn dak bħala żviluppatur.

2017
01:28:40,642 --> 01:28:42,350
Mela ejja nitkellmu dwar
xi wħud mill-każijiet ta 'użu

2018
01:28:42,350 --> 01:28:47,564
li aħna run fis fil-logħob, komuni
xenarji logħob, leaderboard.

2019
01:28:47,564 --> 01:28:49,980
Allura inti ħadthom ltqajna utenti ġejjin fi,
l BoardNames li dawn qed

2020
01:28:49,980 --> 01:28:52,930
fuq, il-punteġġi ta 'dan l-utent.

2021
01:28:52,930 --> 01:28:57,700
Aħna jista 'jkun hashing fuq il userid,
u allura għandna firxa fuq il-logħba.

2022
01:28:57,700 --> 01:28:59,960
Allura kull utent irid jara
l-logħba hu lagħab

2023
01:28:59,960 --> 01:29:01,770
u kull score top tiegħu
madwar l-logħba.

2024
01:29:01,770 --> 01:29:04,000
Allura dak leaderboard personali tiegħu.

2025
01:29:04,000 --> 01:29:10,010
>> Issa nixtieq li jmorru fi u nixtieq li get--
so I jiksbu dawn leaderboards personali.

2026
01:29:10,010 --> 01:29:12,827
What I trid tagħmel hu li tmur tikseb
il-punteġġ top madwar utenti kollha.

2027
01:29:12,827 --> 01:29:13,660
Allura kif nista 'nagħmlu?

2028
01:29:13,660 --> 01:29:18,070
Meta rekord tiegħi huwa hashed fuq
l userid, varjaw fuq il-logħba,

2029
01:29:18,070 --> 01:29:20,740
ukoll jien ser jimxi 'l quddiem
u jirristrutturaw, joħolqu GSI,

2030
01:29:20,740 --> 01:29:22,370
u jien ser jirristrutturaw dik id-data.

2031
01:29:22,370 --> 01:29:27,310
>> Issa jien ser hash fuq il-
BoardName, li huwa l-logħba.

2032
01:29:27,310 --> 01:29:29,800
U jien ser ivarjaw fuq il-punteġġ fuq.

2033
01:29:29,800 --> 01:29:31,540
U issa stajt maħluqa bramel differenti.

2034
01:29:31,540 --> 01:29:34,790
Jien jużaw l-istess tabella,
l-istess data oġġett.

2035
01:29:34,790 --> 01:29:39,870
Imma jien ħolqien ta 'barmil li tagħti
me aggregazzjoni ta 'punteġġ top mill-logħba.

2036
01:29:39,870 --> 01:29:43,180
>> U nista 'mistoqsija dik it-tabella
tikseb dik l-informazzjoni.

2037
01:29:43,180 --> 01:29:50,890
Hekk stajt stabbiliti li mudell query sa
jiġu appoġġjati permezz ta 'indiċi sekondarja.

2038
01:29:50,890 --> 01:29:54,556
Issa dawn jistgħu jiġu magħżula mill BoardName
u magħżula minn TopScore, jiddependi fuq.

2039
01:29:54,556 --> 01:29:57,180
Allura tista 'tara, dawn huma tipi
ta 'każijiet ta' użu ikollok fil-logħob.

2040
01:29:57,180 --> 01:30:02,190
Ieħor tajjeb każ użu nikbru fil-logħob
huwa premjijiet u li s rebaħ il-premjijiet.

2041
01:30:02,190 --> 01:30:05,340
U dan huwa każ użu kbir
fejn nitolbu indiċijiet skarsa.

2042
01:30:05,340 --> 01:30:07,340
Indiċi skarsa huma l-
kapaċità li jiġġeneraw

2043
01:30:07,340 --> 01:30:10,850
indiċi li mhux bilfors
fihom kull oġġett uniku fuq il-mejda.

2044
01:30:10,850 --> 01:30:11,470
U għaliex le?

2045
01:30:11,470 --> 01:30:14,540
Minħabba li l-attribut li l-jiġu
indiċjati ma teżistix fuq kull oġġett.

2046
01:30:14,540 --> 01:30:16,460
>> Allura f'dan il-partikolari
użu każ, jien qal,

2047
01:30:16,460 --> 01:30:19,240
inti taf liema, jien ser
toħloq attribut imsejħa Award.

2048
01:30:19,240 --> 01:30:22,970
U jien ser jagħti kull utent
li għandha tagħti dan il attribut.

2049
01:30:22,970 --> 01:30:25,950
Utenti li ma jkollhomx premjijiet huma
mhux se jkollhom dan attribut.

2050
01:30:25,950 --> 01:30:27,800
Allura meta I joħolqu l-
indiċi, l-uniċi utenti

2051
01:30:27,800 --> 01:30:28,960
li ser juru
up fl-indiċi huma

2052
01:30:28,960 --> 01:30:31,050
dawk li attwalment rebħu premijiet.

2053
01:30:31,050 --> 01:30:34,440
Allura dak mod tajjeb ħafna biex ikunu jistgħu
biex joħolqu indiċi iffiltrat li

2054
01:30:34,440 --> 01:30:40,580
huma ħafna, selettivi ħafna li ma
jkollhom indiċi tal-mejda kollu.

2055
01:30:40,580 --> 01:30:43,050
>> Allura aħna qed jkollna baxx fil-ħin hawn.

2056
01:30:43,050 --> 01:30:49,190
Jien ser jimxi 'l quddiem u skip
out u skip dan ix-xenarju.

2057
01:30:49,190 --> 01:30:52,625
Tkellem ftit about--

2058
01:30:52,625 --> 01:30:54,460
>> UDJENZA: Nista jistaqsu mistoqsija ta 'malajr?

2059
01:30:54,460 --> 01:30:56,722
Wieħed huwa jikteb tqil?

2060
01:30:56,722 --> 01:30:57,680
Rick HOULIHAN: X'inhu?

2061
01:30:57,680 --> 01:30:58,596
UDJENZA: Ikteb tqil.

2062
01:30:58,596 --> 01:31:01,270
Rick HOULIHAN: Ikteb tqil.

2063
01:31:01,270 --> 01:31:03,460
Ħa nara.

2064
01:31:03,460 --> 01:31:06,220
>> UDJENZA: Jew hija li mhux
xi ħaġa li tista 'sempliċement

2065
01:31:06,220 --> 01:31:08,809
vuċi fil-kwistjoni ta 'sekonda?

2066
01:31:08,809 --> 01:31:10,850
Rick HOULIHAN: Immorru
permezz tal-xenarju votazzjoni.

2067
01:31:10,850 --> 01:31:11,670
Huwa mhux ħażin.

2068
01:31:11,670 --> 01:31:14,580
Do inti guys ftit minuti?

2069
01:31:14,580 --> 01:31:15,860
KOLLOX SEW.

2070
01:31:15,860 --> 01:31:17,890
>> Allura aħna ser nitkellmu dwar votazzjoni.

2071
01:31:17,890 --> 01:31:20,250
Allura votazzjoni ħin reali, għandna
ħtiġijiet għall-votazzjoni.

2072
01:31:20,250 --> 01:31:25,250
Rekwiżiti huma li inħallu
kull persuna li tivvota darba biss.

2073
01:31:25,250 --> 01:31:28,060
Irridu ħadd li jkunu jistgħu
li jibdlu l-vot tagħhom.

2074
01:31:28,060 --> 01:31:31,045
Irridu aggregazzjoni fil-ħin reali
u analytics għal demografija

2075
01:31:31,045 --> 01:31:34,210
li aħna qed tmur biex tkun
turi lill-utenti dwar is-sit.

2076
01:31:34,210 --> 01:31:35,200
>> Think ta 'dan ix-xenarju.

2077
01:31:35,200 --> 01:31:37,550
Aħna naħdmu ħafna realtà
TV turi fejn dawn qed

2078
01:31:37,550 --> 01:31:38,960
tagħmel dawn it-tip eżatt ta 'affarijiet.

2079
01:31:38,960 --> 01:31:41,584
Allura inti tista 'taħseb l-xenarju,
għandna miljuni u miljuni

2080
01:31:41,584 --> 01:31:43,959
bniet ta adoloxxenti hemmhekk
ma 'mowbajls tagħhom

2081
01:31:43,959 --> 01:31:46,250
u li jivvutaw, u li jivvutaw, u
votazzjoni għal kull min huma

2082
01:31:46,250 --> 01:31:48,610
isibu l-aktar popolari.

2083
01:31:48,610 --> 01:31:50,830
Allura dawn huma xi wħud mill-
Rekwiżiti we run out.

2084
01:31:50,830 --> 01:31:52,990
>> U għalhekk l-ewwel jieħu
sabiex issolvi din il-problema

2085
01:31:52,990 --> 01:31:55,090
tkun li tibni
applikazzjoni sempliċi ħafna.

2086
01:31:55,090 --> 01:31:56,490
Hekk stajt sibt dan app.

2087
01:31:56,490 --> 01:31:57,950
Għandi xi votanti hemmhekk.

2088
01:31:57,950 --> 01:31:59,980
Huma jidħlu fi, huma laqat il-app votazzjoni.

2089
01:31:59,980 --> 01:32:03,440
Stajt ltqajna xi voti tabella prima
I ser biss dump dawk il-voti fis.

2090
01:32:03,440 --> 01:32:05,780
I ser ikollhom xi aggregat
voti tabella li

2091
01:32:05,780 --> 01:32:09,490
se tagħmel analytics tiegħi u d-demografija,
u aħna ser jitqiegħdu dan kollu fil hemmhekk.

2092
01:32:09,490 --> 01:32:11,420
>> U dan huwa kbir.

2093
01:32:11,420 --> 01:32:12,332
Life hija tajba.

2094
01:32:12,332 --> 01:32:15,040
Tal-ħajja tajba sakemm insibu li
dejjem hemm biss wieħed jew tnejn

2095
01:32:15,040 --> 01:32:16,879
nies li huma popolari f'elezzjoni.

2096
01:32:16,879 --> 01:32:19,420
Hemm biss wieħed jew żewġ affarijiet
li n-nies verament jimpurtak.

2097
01:32:19,420 --> 01:32:22,340
U jekk int jivvota fuq
iskala, kollha f'daqqa jien

2098
01:32:22,340 --> 01:32:26,360
se tkun tismir l-infern minn
żewġ kandidati, wieħed jew żewġ kandidati.

2099
01:32:26,360 --> 01:32:29,390
Numru limitat ħafna ta 'oġġetti
nies isibu li jkun popolari.

2100
01:32:29,390 --> 01:32:31,710
>> Din mhix mudell tad-disinn tajjeb.

2101
01:32:31,710 --> 01:32:33,549
Dan huwa attwalment
mudell tad-disinn ħażina ħafna

2102
01:32:33,549 --> 01:32:36,340
peress illi toħloq eżattament dak li aħna
tkellem dwar liema kien ċwievet sħun.

2103
01:32:36,340 --> 01:32:38,960
Ċwievet sħun huma xi ħaġa li aħna ma simili.

2104
01:32:38,960 --> 01:32:40,470
>> Allura kif nistgħu jiffissaw dan?

2105
01:32:40,470 --> 01:32:47,640
U tassew, il-mod biex jiffissaw dan huwa
billi dawk bramel kandidati

2106
01:32:47,640 --> 01:32:51,490
u għal kull kandidat li għandna,
aħna qed tmur biex tehmeż valur każwali,

2107
01:32:51,490 --> 01:32:54,192
xi ħaġa li nafu, każwali
valur bejn wieħed u 100,

2108
01:32:54,192 --> 01:32:56,620
bejn 100 u 1000,
jew bejn wieħed u 1000,

2109
01:32:56,620 --> 01:32:59,940
madankollu valuri każwali ħafna inti tixtieq li
tehmeż fuq it-tmiem ta 'dak il-kandidat.

2110
01:32:59,940 --> 01:33:01,330
>> U dak li jien verament isir allura?

2111
01:33:01,330 --> 01:33:05,830
Jekk jien jużaw l-ID kandidat kif
-barmil biex voti aggregati,

2112
01:33:05,830 --> 01:33:08,780
jekk Stajt miżjud każwali
Numru sa l-aħħar ta 'dak,

2113
01:33:08,780 --> 01:33:12,000
Stajt ħolqot issa 10 bramel, a
mitt bramel, elf bramel

2114
01:33:12,000 --> 01:33:14,160
li jien aggregazzjoni voti madwar.

2115
01:33:14,160 --> 01:33:18,030
>> So I jkollhom miljuni, u miljuni,
u miljuni ta 'rekords li ġejjin fil

2116
01:33:18,030 --> 01:33:22,050
għal dawn il-kandidati, I am issa tixrid
dawk il-voti madwar A_1 Kandidati

2117
01:33:22,050 --> 01:33:24,630
permezz A_100 Kandidati, minħabba
kull darba vot tidħol fi,

2118
01:33:24,630 --> 01:33:26,530
Jien jiġġeneraw każwali
valur bejn wieħed u 100.

2119
01:33:26,530 --> 01:33:29,446
Jien klassifikazzjoni hija stabbilita hija fuq it-tmiem ta 'l-
kandidat li il-persuna tal-vot għall.

2120
01:33:29,446 --> 01:33:31,120
Jien dumping li f'dak barmil.

2121
01:33:31,120 --> 01:33:33,910
>> Issa fuq il-backside, I know
li sibt mitt bramel.

2122
01:33:33,910 --> 01:33:36,350
Allura meta I tixtieq li tmur quddiem
u jaggregaw l-voti,

2123
01:33:36,350 --> 01:33:38,244
Naqra minn dawk bramel kollha.

2124
01:33:38,244 --> 01:33:39,160
So I jimxi 'l quddiem u żid.

2125
01:33:39,160 --> 01:33:42,410
U allura jien il-firxa jiġbru
fejn I go out u jgħidu ħej,

2126
01:33:42,410 --> 01:33:45,399
inti taf liema, ewlenin din kandidat
spazji hija aktar minn mitt bramel.

2127
01:33:45,399 --> 01:33:47,940
Jien ser tiġbor l-
voti minn dawk mitt bramel.

2128
01:33:47,940 --> 01:33:49,981
Jien ser tinġabar flimkien
minnhom u jien ser ngħid,

2129
01:33:49,981 --> 01:33:53,830
Kandidat A issa għandha
total għadd tal-voti tal x.

2130
01:33:53,830 --> 01:33:55,690
>> Issa kemm il-write
query u l query read

2131
01:33:55,690 --> 01:33:58,160
huma mqassma nicely
għaliex jien bil-miktub bejn

2132
01:33:58,160 --> 01:34:00,320
u jien qari madwar l-mijiet ta 'ċwievet.

2133
01:34:00,320 --> 01:34:03,500
Jien ma miktub u
qari madwar ċavetta waħda issa.

2134
01:34:03,500 --> 01:34:04,950
Allura dak mudell kbir.

2135
01:34:04,950 --> 01:34:08,090
>> Dan huwa attwalment probabilment waħda
tad-disinn l-aktar importanti

2136
01:34:08,090 --> 01:34:10,420
mudelli għall-iskala fil NoSQL.

2137
01:34:10,420 --> 01:34:14,470
Inti se tara dan it-tip ta '
mudell tad-disinn f'kull togħma.

2138
01:34:14,470 --> 01:34:19,100
MongoDB, DynamoDB, ma
kwistjoni, ilkoll għandna biex jagħmlu dan.

2139
01:34:19,100 --> 01:34:21,840
Għaliex meta inti qed jittrattaw
ma 'dawk aggregazzjonijiet enormi,

2140
01:34:21,840 --> 01:34:26,650
inti għandek figura out b'tali mod li
mifruxa minnhom madwar l bramel.

2141
01:34:26,650 --> 01:34:29,512
Allura dan huwa l-mod inti tagħmel dan.

2142
01:34:29,512 --> 01:34:31,220
Dritt kollox, iva, liema
li qed tagħmel id-dritt issa

2143
01:34:31,220 --> 01:34:35,252
huwa int kummerċ off read
ispiża ta 'aġġustament iskalabbiltà.

2144
01:34:35,252 --> 01:34:37,085
L-ispiża ta 'read tiegħi huwa
ftit aktar kumpless

2145
01:34:37,085 --> 01:34:40,220
u irrid immur tinqara minn
mitt bramel minflok waħda.

2146
01:34:40,220 --> 01:34:41,310
Imma jien tista 'tikteb.

2147
01:34:41,310 --> 01:34:44,860
U throughput tiegħi, write tiegħi
throughput huwa inkredibbli.

2148
01:34:44,860 --> 01:34:49,450
Allura huwa ġeneralment valur
teknika għall skalar DynamoDB,

2149
01:34:49,450 --> 01:34:51,350
jew kwalunkwe database NoSQL għal dik il-kwistjoni.

2150
01:34:51,350 --> 01:34:53,824

2151
01:34:53,824 --> 01:34:55,240
Allura aħna dehret kif iskala.

2152
01:34:55,240 --> 01:34:56,930
U aħna dehret kif
jeliminaw ċwievet sħun tagħna.

2153
01:34:56,930 --> 01:34:57,820
U dan huwa meraviljuż.

2154
01:34:57,820 --> 01:34:58,960
U aħna ltqajna din is-sistema sbieħ.

2155
01:34:58,960 --> 01:35:02,043
U huwa tatna votazzjoni ħafna korretta
għaliex għandna vot rekord de-dupe.

2156
01:35:02,043 --> 01:35:03,130
Huwa mibni fis DynamoDB.

2157
01:35:03,130 --> 01:35:05,380
Aħna tkellimna dwar id-drittijiet kundizzjonali.

2158
01:35:05,380 --> 01:35:08,170
>> Meta votant tidħol fi, tpoġġi
daħħal fuq il-mejda,

2159
01:35:08,170 --> 01:35:11,220
dawn daħħal ma votant ID tagħhom,
jekk jippruvaw li daħħal vot ieħor,

2160
01:35:11,220 --> 01:35:13,320
I do jiktbu kondizzjonali.

2161
01:35:13,320 --> 01:35:16,960
Say biss tikteb din
jekk dan ma teżistix.

2162
01:35:16,960 --> 01:35:19,270
Allura hekk kif nara li
li l-vot ħabat mal-mejda,

2163
01:35:19,270 --> 01:35:20,460
ħadd ieħor li għaddej biex tkun
kapaċi tistabbilixxi vot tagħhom fil.

2164
01:35:20,460 --> 01:35:21,634
U li meraviljuż.

2165
01:35:21,634 --> 01:35:23,550
U aħna qed inkrementazzjoni
counters kandidati tagħna.

2166
01:35:23,550 --> 01:35:25,466
U aħna qed tagħmel tagħna
demografija u dak kollu li.

2167
01:35:25,466 --> 01:35:29,110
Imma x'jiġri jekk tiegħi
applikazzjoni taqa fuq?

2168
01:35:29,110 --> 01:35:31,350
Issa kollha ta 'voti f'daqqa
huma ġejjin fi, u I

2169
01:35:31,350 --> 01:35:34,840
ma nafx jekk dawn qed jkollna pproċessati
fis analytics tiegħi u d-demografija

2170
01:35:34,840 --> 01:35:36,040
aktar.

2171
01:35:36,040 --> 01:35:38,462
U meta l-applikazzjoni
taqa 'lura up, kif

2172
01:35:38,462 --> 01:35:41,420
l-infern do I know dak voti jkollhom
ġew ipproċessati u fejn nista tibda?

2173
01:35:41,420 --> 01:35:44,530
>> Allura din hija problema reali meta inti
tibda tħares lejn dan it-tip ta 'xenarju.

2174
01:35:44,530 --> 01:35:45,571
U kif nistgħu ssolvi din?

2175
01:35:45,571 --> 01:35:48,070
Aħna issolvi dan ma 'dak li aħna
sejħa Streams DynamoDB.

2176
01:35:48,070 --> 01:35:53,470
Streams huwa żmien ordnat u
log bidla maqsuma ta 'kull aċċess

2177
01:35:53,470 --> 01:35:55,700
it-tabella, kull ikteb
aċċess għall-tabella.

2178
01:35:55,700 --> 01:35:58,810
Kwalunkwe data li-miktub lill-
tabella turi up fuq in-nixxiegħa.

2179
01:35:58,810 --> 01:36:01,815
>> Huwa bażikament kju 24 siegħa.

2180
01:36:01,815 --> 01:36:03,690
Punti laqat il-fluss,
jgħixu għal 24 siegħa.

2181
01:36:03,690 --> 01:36:05,990
Huma jistgħu jinqraw minn darba.

2182
01:36:05,990 --> 01:36:09,400
Garantiti li għandhom jiġu kkonsenjati
biss ladarba l-nixxiegħa,

2183
01:36:09,400 --> 01:36:11,180
jista 'jinqara numru n ta' drabi.

2184
01:36:11,180 --> 01:36:14,910
Hekk iżda ħafna proċessi inti tixtieq li
jikkunsmaw li d-data, inti tista jikkunsmaw.

2185
01:36:14,910 --> 01:36:16,350
Hija se jidhru kull aġġornament.

2186
01:36:16,350 --> 01:36:18,455
Kull write se biss
jidher darba fuq in-nixxiegħa.

2187
01:36:18,455 --> 01:36:20,621
Allura inti ma għandekx għalfejn tinkwieta
dwar l-ipproċessar darbtejn

2188
01:36:20,621 --> 01:36:22,500
mill-istess proċess.

2189
01:36:22,500 --> 01:36:25,350
>> Huwa strettament ordnat għal kull oġġett.

2190
01:36:25,350 --> 01:36:28,180
Meta ngħidu ħin
ordnat u maqsuma,

2191
01:36:28,180 --> 01:36:30,680
tkun taf tara kull partizzjoni fuq in-nixxiegħa.

2192
01:36:30,680 --> 01:36:33,169
Inti se tara oġġetti, aġġornamenti fl-ordni.

2193
01:36:33,169 --> 01:36:35,210
Aħna mhux jiggarantixxu
fuq in-nixxiegħa li int

2194
01:36:35,210 --> 01:36:40,240
se tikseb kull transazzjoni
fl-ordni madwar oġġetti.

2195
01:36:40,240 --> 01:36:42,440
>> Allura flussi huma idempotent.

2196
01:36:42,440 --> 01:36:44,037
Do we kollha jafu liema idempotent jfisser?

2197
01:36:44,037 --> 01:36:46,620
Idempotent ifisser li inti tista 'tagħmel dan
fuq, u aktar, u aktar mill-ġdid.

2198
01:36:46,620 --> 01:36:48,200
Ir-riżultat ser ikun l-istess.

2199
01:36:48,200 --> 01:36:49,991
>> Flussi huma idempotent,
iżda dawn għandhom ikunu

2200
01:36:49,991 --> 01:36:54,860
lagħbu mill-punt tat-tluq,
fejn inti tagħżel, sa l-aħħar,

2201
01:36:54,860 --> 01:36:57,950
jew dawn ma tirriżultax
fl-istess valuri.

2202
01:36:57,950 --> 01:36:59,727
>> Istess ħaġa ma MongoDB.

2203
01:36:59,727 --> 01:37:01,560
MongoDB għandha tibni
huma jitolbu l-oplog.

2204
01:37:01,560 --> 01:37:04,140
Huwa l-istess kostruzzjoni eżatt.

2205
01:37:04,140 --> 01:37:06,500
Ħafna databases NoSQL
jkollhom din jibnu.

2206
01:37:06,500 --> 01:37:08,790
Jużawha biex tagħmel affarijiet
bħal replikazzjoni, li

2207
01:37:08,790 --> 01:37:10,475
huwa eżattament dak li nagħmlu ma 'flussi.

2208
01:37:10,475 --> 01:37:12,350
UDJENZA: Forsi
kwistjoni heretical, imma int

2209
01:37:12,350 --> 01:37:13,975
jitkellmu dwar apps isir stipulat l ibqa 'sejjer hekk.

2210
01:37:13,975 --> 01:37:16,089
Huma flussi garantit li
qatt ma possibilment jinżlu?

2211
01:37:16,089 --> 01:37:18,630
Rick HOULIHAN: Yeah, flussi
huma ggarantiti li qatt ma jinżlu.

2212
01:37:18,630 --> 01:37:21,040
Aħna jamministraw l-infrastruttura
lura. flussi awtomatikament

2213
01:37:21,040 --> 01:37:22,498
tiskjera fil-grupp skalar auto tagħhom.

2214
01:37:22,498 --> 01:37:25,910
Aħna ser jgħaddu ftit
ftit dwar dak li jiġri.

2215
01:37:25,910 --> 01:37:30,060
>> I m'għandhomx jgħidu li mhux qed
garantit li qatt ma jinżlu.

2216
01:37:30,060 --> 01:37:33,110
L-elementi huma garantiti
li jidhru fil-fluss.

2217
01:37:33,110 --> 01:37:36,740
U l-fluss se tkun aċċessibbli.

2218
01:37:36,740 --> 01:37:40,580
Allura dak li jinżel jew taqa 'lura
up, li jiġri taħt.

2219
01:37:40,580 --> 01:37:43,844
Huwa covers-- huwa OK.

2220
01:37:43,844 --> 01:37:46,260
Kull dritt, hekk ikollok differenti
tipi ħsieb barra l-iskrin.

2221
01:37:46,260 --> 01:37:51,040
It-tipi ħsieb li huma importanti għal
programmer tipikament huma, dak li kien dan?

2222
01:37:51,040 --> 01:37:52,370
I nikseb il-fehma qodma.

2223
01:37:52,370 --> 01:37:55,630
Meta aġġornament hits-tabella, dan ser
imbotta l-opinjoni qadima lill-fluss

2224
01:37:55,630 --> 01:38:02,070
sabiex id-data tista arkivju, jew bidla
kontroll, l-identifikazzjoni bidla, bidla

2225
01:38:02,070 --> 01:38:03,600
ġestjoni.

2226
01:38:03,600 --> 01:38:07,160
>> L-immaġni ġdida, dak li issa huwa wara
l-aġġornament, li tip ieħor ta 'opinjoni

2227
01:38:07,160 --> 01:38:07,660
inti tista 'tikseb.

2228
01:38:07,660 --> 01:38:09,660
Tista 'tikseb kemm l-immaġini qodma u ġodda.

2229
01:38:09,660 --> 01:38:10,660
Forsi Irrid tnejn.

2230
01:38:10,660 --> 01:38:11,790
Irrid nara dak li kien.

2231
01:38:11,790 --> 01:38:13,290
Irrid nara dak li inbidel għal.

2232
01:38:13,290 --> 01:38:15,340
>> I jkollhom tip konformità
ta 'proċess li timxi.

2233
01:38:15,340 --> 01:38:17,430
Jeħtieġ li jiġi vverifikat li
meta dawn l-affarijiet jinbidlu,

2234
01:38:17,430 --> 01:38:21,840
li dawn qed fi ħdan ċerti limiti
jew fi ħdan ċerti parametri.

2235
01:38:21,840 --> 01:38:23,840
>> U allura forsi I biss
jeħtieġ li tkun taf liema mibdula.

2236
01:38:23,840 --> 01:38:26,240
I do not care dak partita mibdula.

2237
01:38:26,240 --> 01:38:28,580
I m'għandhomx bżonn li jeħtieġu li jkunu jafu
dak attributi mibdula.

2238
01:38:28,580 --> 01:38:30,882
I biss bżonn tkun taf li
l-oġġetti qed jiġu mimsus.

2239
01:38:30,882 --> 01:38:33,340
Allura dawn huma t-tipi ta 'fehmiet
li ikollok off-fluss

2240
01:38:33,340 --> 01:38:35,960
u inti tista jinteraġixxu magħhom.

2241
01:38:35,960 --> 01:38:37,840
>> L-applikazzjoni li
jikkonsma-fluss,

2242
01:38:37,840 --> 01:38:39,298
dan huwa tip ta 'l-mod kif dan jaħdem.

2243
01:38:39,298 --> 01:38:42,570
Klijent DynamoDB jitlob li
imbotta data għat-tabelli.

2244
01:38:42,570 --> 01:38:44,750
Flussi tiskjera fuq dak li nsejħu shards.

2245
01:38:44,750 --> 01:38:47,380
Shards huma skalat
indipendentement mill-tabella.

2246
01:38:47,380 --> 01:38:50,660
Huma ma line up kollox
għall-ħitan diviżorji tat-tabella tiegħek.

2247
01:38:50,660 --> 01:38:52,540
U r-raġuni għaliex huwa
minħabba li linja up

2248
01:38:52,540 --> 01:38:55,430
għall-kapaċità, l-kurrent
kapaċità tat-tabella.

2249
01:38:55,430 --> 01:38:57,600
>> Huma jużaw fil tagħhom
stess grupp skalar auto,

2250
01:38:57,600 --> 01:39:00,800
u dawn jibdew spin out jiddependi
fuq kemm jikteb huma ġejjin fi,

2251
01:39:00,800 --> 01:39:03,090
kif reads-- ħafna verament huwa jikteb.

2252
01:39:03,090 --> 01:39:05,820
M'hemm l-ebda reads-- imma kif
ħafna jikteb huma ġejjin fil.

2253
01:39:05,820 --> 01:39:08,200
>> U mbagħad fuq id-dahar
aħħar, għandna dak li aħna

2254
01:39:08,200 --> 01:39:11,390
sejħa KCl, jew kinesis Librerija Klijent.

2255
01:39:11,390 --> 01:39:19,190
Kinesis hija data nixxiegħa
teknoloġija ta 'pproċessar mill-Amażonja.

2256
01:39:19,190 --> 01:39:22,040
U l-flussi hija mibnija fuq dan.

2257
01:39:22,040 --> 01:39:25,670
>> Allura inti tuża KCl ppermettiet
applikazzjoni biex jaqra l-fluss.

2258
01:39:25,670 --> 01:39:28,752
Il-Librerija Klijent kinesis attwalment
tamministra l-ħaddiema għalik.

2259
01:39:28,752 --> 01:39:30,460
U wkoll ma xi
affarijiet interessanti.

2260
01:39:30,460 --> 01:39:35,630
Hija se toħloq xi tabelli up
fil tablespace DynamoDB tiegħek

2261
01:39:35,630 --> 01:39:38,410
biex jittraċċaw liema oġġetti
ġew ipproċessati.

2262
01:39:38,410 --> 01:39:41,190
Allura dan il-mod jekk din taqa 'lura, jekk
din taqa fuq u jidħol u gets

2263
01:39:41,190 --> 01:39:45,570
kien back up, jista jiġi ddeterminat fejn
ma kien fl-ipproċessar tal-fluss.

2264
01:39:45,570 --> 01:39:48,360
>> Li l-importanti ħafna meta
li qed jitkellem dwar replikazzjoni.

2265
01:39:48,360 --> 01:39:50,350
I bżonn tkun taf liema
data kienet ġiet ipproċessata

2266
01:39:50,350 --> 01:39:52,810
u liema data għad trid tiġi pproċessata.

2267
01:39:52,810 --> 01:39:57,380
Allura l-librerija KCl għal flussi se
jagħtik ħafna ta 'din il-funzjonalità.

2268
01:39:57,380 --> 01:39:58,990
Huwa jieħu ħsieb ta 'l manutenzjoni.

2269
01:39:58,990 --> 01:40:01,140
Inhi up ħaddiem għal kull shard.

2270
01:40:01,140 --> 01:40:04,620
Hija toħloq tabella amministrattiva
għal kull shard, għal kull ħaddiem.

2271
01:40:04,620 --> 01:40:07,560
U dawk il-ħaddiema nar,
huma jżommu dawn it-tabelli

2272
01:40:07,560 --> 01:40:10,510
sabiex inti tkun taf dan ir-rekord
kienet tinqara u pproċessata.

2273
01:40:10,510 --> 01:40:13,850
U mbagħad il-mod jekk il-proċess
imut u taqa 'lura online,

2274
01:40:13,850 --> 01:40:17,940
dan jistgħu jerġgħu jibdew id-dritt fejn telaq.

2275
01:40:17,940 --> 01:40:20,850
>> Allura nużaw dan għal
replikazzjoni cross-reġjun.

2276
01:40:20,850 --> 01:40:24,680
A lott ta 'klijenti jkollhom il-ħtieġa li
jimxu data jew partijiet ta 'tabelli tad-data tagħhom

2277
01:40:24,680 --> 01:40:25,920
madwar reġjuni differenti.

2278
01:40:25,920 --> 01:40:29,230
Hemm disa 'reġjuni
madwar id-dinja.

2279
01:40:29,230 --> 01:40:32,100
Allura jista 'jkun hemm I need--
jista 'jkollhom utenti fl-Asja, l-utenti

2280
01:40:32,100 --> 01:40:34,150
fil-Kosta tal-Lvant ta 'l-Istati Uniti.

2281
01:40:34,150 --> 01:40:38,980
Huma għandhom data differenti li
jeħtieġ li jitqassmu lokalment.

2282
01:40:38,980 --> 01:40:42,510
U forsi utent dritta mill
Asia quddiem għall-Istati Uniti,

2283
01:40:42,510 --> 01:40:45,020
u nixtieq li tiġi replikata
data tiegħu miegħu.

2284
01:40:45,020 --> 01:40:49,340
Allura meta hu gets off-pjan, huwa għandu
esperjenza tajba jużaw app mobbli tiegħu.

2285
01:40:49,340 --> 01:40:52,360
>> Tista 'tuża l-reġjun transkonfinali
librerija replikazzjoni biex jagħmlu dan.

2286
01:40:52,360 --> 01:40:55,730
Bażikament għandna
pprovduti żewġ teknoloġiji.

2287
01:40:55,730 --> 01:40:59,400
One applikazzjoni console inti tista
stand up fuq eżempju tiegħek KE2 stess.

2288
01:40:59,400 --> 01:41:01,240
Hija tmur replikazzjoni pur.

2289
01:41:01,240 --> 01:41:02,720
U allura aħna ħadt l-librerija.

2290
01:41:02,720 --> 01:41:06,070
Il-librerija tista 'tuża biex jibnu
applikazzjoni tiegħek jekk inti

2291
01:41:06,070 --> 01:41:10,740
trid tagħmel affarijiet crazy ma 'dak data--
filtru, jirreplika biss parti minnu,

2292
01:41:10,740 --> 01:41:14,120
dawwar id-data, jġorrhom fi
tabella differenti, hekk u ibqa 'sejjer hekk.

2293
01:41:14,120 --> 01:41:18,700

2294
01:41:18,700 --> 01:41:20,520
Allura dak it-tip ta 'dak li qisu.

2295
01:41:20,520 --> 01:41:23,690
>> Streams DynamoDB jista 'jkun
pproċessata mill dak li nsejħu Lambda.

2296
01:41:23,690 --> 01:41:27,394
Aħna msemmija ftit dwar avveniment
arkitetturi ta 'applikazzjoni mmexxija.

2297
01:41:27,394 --> 01:41:28,810
Lambda huwa komponent ewlieni ta 'dak.

2298
01:41:28,810 --> 01:41:32,840
Lambda huwa kodiċi li n-nirien fuq talba
bi tweġiba għal avveniment partikolari.

2299
01:41:32,840 --> 01:41:36,020
Waħda minn dawk l-avvenimenti tista 'tkun
rekord jidhru fuq in-nixxiegħa.

2300
01:41:36,020 --> 01:41:39,100
Jekk xi rekord jidher fuq in-nixxiegħa,
aħna ser sejħa din il-funzjoni Java.

2301
01:41:39,100 --> 01:41:44,980
Ukoll, dan huwa JavaScript, u ​​Lambda
jappoġġja Node.js, Java, Python,

2302
01:41:44,980 --> 01:41:47,820
u dalwaqt se tappoġġja
lingwi oħrajn ukoll.

2303
01:41:47,820 --> 01:41:50,940
U biżżejjed li jingħad, huwa kodiċi pur.

2304
01:41:50,940 --> 01:41:53,610
jiktbu Fl Java, inti tiddefinixxi klassi.

2305
01:41:53,610 --> 01:41:55,690
Timbotta l up JAR fis Lambda.

2306
01:41:55,690 --> 01:42:00,200
U allura inti tispeċifika liema klassi
sejħa li minħabba fih avveniment.

2307
01:42:00,200 --> 01:42:04,770
U allura l-infrastruttura Lambda
wara li se jimxu dan il-kodiċi.

2308
01:42:04,770 --> 01:42:06,730
>> Dik il-kodiċi jistgħu jipproċessaw
rekords barra mill-fluss.

2309
01:42:06,730 --> 01:42:08,230
Hija tista 'tagħmel xejn trid magħha.

2310
01:42:08,230 --> 01:42:11,650
F'dan l-eżempju partikolari, kollox aħna qed
verament tagħmel huwa qtugħ l-attributi.

2311
01:42:11,650 --> 01:42:13,480
Iżda din hija biss kodiċi.

2312
01:42:13,480 --> 01:42:15,260
Kodiċi tista 'tagħmel xejn, id-dritt?

2313
01:42:15,260 --> 01:42:16,600
>> Allura inti tista 'ddur li d-data.

2314
01:42:16,600 --> 01:42:18,160
Tista 'tinħoloq ħsieb derivattiv.

2315
01:42:18,160 --> 01:42:21,160
Jekk huwa struttura dokument,
inti tista flatten l-istruttura.

2316
01:42:21,160 --> 01:42:24,300
Tista 'toħloq indiċi alternattiv.

2317
01:42:24,300 --> 01:42:27,100
Kull tip ta 'affarijiet li tista'
tagħmel il-Streams DynamoDB.

2318
01:42:27,100 --> 01:42:28,780
>> U tassew, dan huwa dak li qisu.

2319
01:42:28,780 --> 01:42:29,940
Allura inti tikseb dawk aġġornamenti li ġejjin fil.

2320
01:42:29,940 --> 01:42:31,190
Huma qed ġejjin off-sekwenza.

2321
01:42:31,190 --> 01:42:32,720
Huma qed taqra mill-funzjoni Lambda.

2322
01:42:32,720 --> 01:42:37,480
Huma qed ddawwar il-data u
timbuttah up fit-tabelli derivattivi,

2323
01:42:37,480 --> 01:42:42,200
nnotifikati s-sistemi esterni tal-bidla,
u timbotta data fis ElastiCache.

2324
01:42:42,200 --> 01:42:45,900
>> Aħna tkellimna dwar kif titfa l-cache
quddiem il-database għal li l-bejgħ

2325
01:42:45,900 --> 01:42:46,450
xenarju.

2326
01:42:46,450 --> 01:42:50,049
Ukoll x'jiġri jekk I
taġġorna d-deskrizzjoni oġġett?

2327
01:42:50,049 --> 01:42:52,340
Ukoll, jekk I kellhom Lambda
funzjoni jimxi fuq dik it-tabella,

2328
01:42:52,340 --> 01:42:55,490
jekk I taġġorna d-deskrizzjoni oġġett, dan ser
pick up-rekord off-fluss,

2329
01:42:55,490 --> 01:42:58,711
u dan ser taġġorna l-ElastiCache
eżempju mad-data ġdida.

2330
01:42:58,711 --> 01:43:00,460
Allura li l-lott ta '
dak li nagħmlu ma 'Lambda.

2331
01:43:00,460 --> 01:43:02,619
Huwa kodiċi kolla, konnetturi.

2332
01:43:02,619 --> 01:43:04,410
U fil-fatt jagħti
l-abbiltà li tniedi

2333
01:43:04,410 --> 01:43:07,930
u li jħaddmu applikazzjonijiet kumplessi ħafna
mingħajr server dedikat

2334
01:43:07,930 --> 01:43:10,371
infrastruttura, li huwa verament jibred.

2335
01:43:10,371 --> 01:43:13,100
>> Mela ejja jmorru lura għall tagħna
fil-ħin reali arkitettura votazzjoni.

2336
01:43:13,100 --> 01:43:17,984
Dan huwa ġdid u mtejba regolarment bil tagħna
flussi u KCl ppermettiet applikazzjoni.

2337
01:43:17,984 --> 01:43:20,150
Istess bħal qabel, nistgħu
jimmaniġġjaw kull skala ta 'elezzjoni.

2338
01:43:20,150 --> 01:43:21,100
Aħna bħal dan.

2339
01:43:21,100 --> 01:43:24,770
Aħna qed tagħmel l jiġbor dispersjoni
madwar bramel multipli.

2340
01:43:24,770 --> 01:43:26,780
Imxejna ltqajna qfil ottimisti għaddej.

2341
01:43:26,780 --> 01:43:30,192
Aħna nkunu nistgħu nżommu votanti tagħna
mit-tibdil voti li jġibu.

2342
01:43:30,192 --> 01:43:31,400
Huma jistgħu jivvotaw darba biss biss.

2343
01:43:31,400 --> 01:43:32,880
Dan huwa meraviljuż.

2344
01:43:32,880 --> 01:43:35,895
Tolleranza tort Real-time,
aggregazzjoni skalabbli issa.

2345
01:43:35,895 --> 01:43:38,270
Jekk il-ħaġa taqa fuq, huwa
jaf fejn jerġa 'jibda innifsu

2346
01:43:38,270 --> 01:43:41,300
meta niġu lura up għaliex
aħna qed jużaw l-app KCl.

2347
01:43:41,300 --> 01:43:45,700
U allura nistgħu wkoll jużaw dak
Applikazzjoni KCl biex timbotta data out

2348
01:43:45,700 --> 01:43:48,820
li redshift għal oħra
analytics app, jew l-użu

2349
01:43:48,820 --> 01:43:51,990
l MapReduce elastiċi jiddekorri
aggregazzjonijiet streaming fil-ħin reali off

2350
01:43:51,990 --> 01:43:53,180
ta 'dik id-data.

2351
01:43:53,180 --> 01:43:55,480
>> Allura dawn huma affarijiet aħna
ma tkellem dwar ħafna.

2352
01:43:55,480 --> 01:43:57,375
Iżda dawn qed addizzjonali
teknoloġiji li ġejjin

2353
01:43:57,375 --> 01:44:00,310
biex iġorru meta inti qed tfittex
fil dawn it-tipi ta 'xenarji.

2354
01:44:00,310 --> 01:44:03,160
>> Dritt kollu, b'tali mod li jkunu infurmati dwar
analytics ma Streams DynamoDB.

2355
01:44:03,160 --> 01:44:05,340
Inti tista 'tiġbor de-dupe
data, do kull tip

2356
01:44:05,340 --> 01:44:09,490
ta 'għalf sbieħ, data aggregata fil
memorja, joħolqu dawk it-tabelli derivattivi.

2357
01:44:09,490 --> 01:44:13,110
Li l-każ użu enormi
li ħafna ta 'klijenti

2358
01:44:13,110 --> 01:44:16,950
huma involuti ma ', tieħu l-nested
proprjetajiet ta 'dawk id-dokumenti JSON

2359
01:44:16,950 --> 01:44:18,946
u l-ħolqien indiċi addizzjonali.

2360
01:44:18,946 --> 01:44:21,680

2361
01:44:21,680 --> 01:44:23,150
>> Aħna fl-aħħar.

2362
01:44:23,150 --> 01:44:26,689
Grazzi mill-ħlas tal miegħi.

2363
01:44:26,689 --> 01:44:28,480
Mela ejja nitkellmu dwar
arkitettura referenza.

2364
01:44:28,480 --> 01:44:33,440
DynamoDB tiltaqa fin-nofs ta 'hekk
ħafna mill-infrastruttura AWS.

2365
01:44:33,440 --> 01:44:37,090
Bażikament inti tista ganċ
sa xi ħaġa li trid.

2366
01:44:37,090 --> 01:44:45,600
Applikazzjonijiet mibnija bl-użu Dynamo jinkludu
Lambda, ElastiCache, CloudSearch,

2367
01:44:45,600 --> 01:44:49,890
imbotta l-informazzjoni barra fil Elastic
MapReduce, fuq l-importazzjoni minn DynamoDB

2368
01:44:49,890 --> 01:44:52,370
fis S3, kull tip ta workflows.

2369
01:44:52,370 --> 01:44:54,120
Iżda probabbilment l-aħjar
ħaġa biex jitkellmu dwar,

2370
01:44:54,120 --> 01:44:56,119
u dan huwa dak li verament
interessanti huwa meta aħna

2371
01:44:56,119 --> 01:44:58,350
jitkellmu dwar applikazzjonijiet misjuqa avveniment.

2372
01:44:58,350 --> 01:45:00,300
>> Dan huwa eżempju ta '
proġett intern

2373
01:45:00,300 --> 01:45:04,850
li għandna fejn aħna qed attwalment
pubblikazzjoni biex tiġbor riżultati ta 'stħarriġ.

2374
01:45:04,850 --> 01:45:07,700
Għalhekk fl rabta email li
aħna jibgħat, hemm ser

2375
01:45:07,700 --> 01:45:11,350
jkun ftit klikk link li tgħid
hawn biex jirrispondu għall-istħarriġ.

2376
01:45:11,350 --> 01:45:14,070
U meta klikks persuna
dik ir-rabta, x'jiġri

2377
01:45:14,070 --> 01:45:18,020
huwa jiġbdu jistabbilixxi sigur
HTML forma stħarriġ minn S3.

2378
01:45:18,020 --> 01:45:18,980
M'hemm l-ebda server.

2379
01:45:18,980 --> 01:45:20,600
Dan huwa biss oġġett S3.

2380
01:45:20,600 --> 01:45:22,770
>> Dik il-formola taqa up,
tagħbijiet fil-browser.

2381
01:45:22,770 --> 01:45:24,240
Huwa ltqajna sinsla.

2382
01:45:24,240 --> 01:45:30,160
Huwa ltqajna kumpless JavaScript
li huwa taħdem.

2383
01:45:30,160 --> 01:45:33,557
Allura huwa applikazzjoni ħafna sinjuri
li jibda fil-browser tal-klijent.

2384
01:45:33,557 --> 01:45:36,390
Huma ma jafux li dawn mhux qed
interazzjoni ma 'server back-end.

2385
01:45:36,390 --> 01:45:38,220
Wara dan, huwa kollha browser.

2386
01:45:38,220 --> 01:45:41,780
>> Huma tippubblika r-riżultati għal dak li
nitolbu l-Amażonja API Gateway.

2387
01:45:41,780 --> 01:45:46,270
API Gateway hija sempliċement API web
li tista 'tiddefinixxi u ganċ up

2388
01:45:46,270 --> 01:45:47,760
għal dak kollu li trid.

2389
01:45:47,760 --> 01:45:50,990
F'dan il-każ partikolari, aħna qed
hooked up għal funzjoni Lambda.

2390
01:45:50,990 --> 01:45:54,797
>> Allura operazzjoni POST tiegħi huwa
jiġri bl-ebda server.

2391
01:45:54,797 --> 01:45:56,380
Bażikament dak API Gateway tiltaqa hemm.

2392
01:45:56,380 --> 01:45:58,770
Hija l-ispejjeż me xejn sakemm in-nies
tibda kollokament lilha, id-dritt?

2393
01:45:58,770 --> 01:46:00,269
Il-funzjoni Lambda biss tiltaqa hemm.

2394
01:46:00,269 --> 01:46:03,760
U l-ispejjeż me xejn sakemm
nies jibdew laqtu.

2395
01:46:03,760 --> 01:46:07,270
Allura tista 'tara, bħala l-volum
żidiet, li meta l-imposti ġejjin.

2396
01:46:07,270 --> 01:46:09,390
Jien ma tmexxija ta 'server 24/07.

2397
01:46:09,390 --> 01:46:12,310
>> So I iġbed il-formola
l barra mill-barmil,

2398
01:46:12,310 --> 01:46:15,719
u I post permezz tal-API
Gateway fil-funzjoni Lambda.

2399
01:46:15,719 --> 01:46:17,510
U allura l-Lambda
funzjoni jgħid, inti taf

2400
01:46:17,510 --> 01:46:20,600
dak, stajt ltqajna xi PIIs, xi
informazzjoni personalment identifikabbli

2401
01:46:20,600 --> 01:46:21,480
f'dawn tweġibiet.

2402
01:46:21,480 --> 01:46:23,020
Sibt kummenti ġejjin minn utenti.

2403
01:46:23,020 --> 01:46:24,230
Stajt ltqajna indirizzi email.

2404
01:46:24,230 --> 01:46:26,190
Stajt ltqajna usernames.

2405
01:46:26,190 --> 01:46:27,810
>> Let me maqsuma dan off.

2406
01:46:27,810 --> 01:46:30,280
Jien ser jiġġeneraw xi
metadata off dan ir-rekord.

2407
01:46:30,280 --> 01:46:32,850
U jien ser timbotta l-
metadata fis DynamoDB.

2408
01:46:32,850 --> 01:46:36,059
U I tista 'kriptaġġ l-informazzjoni kollha
u timbotta lilha fis DynamoDB jekk irrid.

2409
01:46:36,059 --> 01:46:38,600
Iżda huwa aktar faċli għalija, f'dan
użu każ, li jimxi 'l quddiem l ngħidu aħna,

2410
01:46:38,600 --> 01:46:42,800
Jien ser timbotta l-informazzjoni prima
fi barmil S3 encrypted.

2411
01:46:42,800 --> 01:46:47,240
So I użu mibnija fil-ġenb server S3
encryption u l-Ġestjoni Ewlenin Amazon

2412
01:46:47,240 --> 01:46:51,600
Servizz b'tali mod li għandi ewlieni li
tista 'ddur fuq intervalli regolari,

2413
01:46:51,600 --> 01:46:55,010
u I tista 'tipproteġi dik id-data PII
bħala parti minn dan fluss tax-xogħol kollu.

2414
01:46:55,010 --> 01:46:55,870
>> Allura dak li jiena jsir?

2415
01:46:55,870 --> 01:47:00,397
Stajt biss skjerat kollu kemm hu
applikazzjoni, u għandi l-ebda server.

2416
01:47:00,397 --> 01:47:02,980
Allura huwa dak avveniment misjuqa applikazzjoni
arkitettura ma għalik.

2417
01:47:02,980 --> 01:47:05,730
>> Issa jekk taħseb dwar
każ użu this--

2418
01:47:05,730 --> 01:47:08,730
għandna klijenti oħra jien jitkellem
għal madwar din l-arkitettura eżatta li

2419
01:47:08,730 --> 01:47:14,560
kampanji phenomenally kbar, li
qed iħarsu lejn dan u jmorru, oh tiegħi.

2420
01:47:14,560 --> 01:47:17,840
Minħabba issa, jistgħu
bażikament timbotta lilha hemmhekk,

2421
01:47:17,840 --> 01:47:21,900
let li kampanja biss ipoġġu
hemm sakemm tniedi, u mhux

2422
01:47:21,900 --> 01:47:24,400
jkollhom għalfejn tinkwieta fig dwar
x'tip ta 'infrastruttura

2423
01:47:24,400 --> 01:47:26,120
se jkun hemm biex jappoġġaha.

2424
01:47:26,120 --> 01:47:28,600
U mbagħad malli
li l-kampanja isir,

2425
01:47:28,600 --> 01:47:31,520
huwa simili l-infrastruttura
biss immedjatament tmur bogħod

2426
01:47:31,520 --> 01:47:33,680
għaliex hemm verament
l-ebda infrastruttura.

2427
01:47:33,680 --> 01:47:35,660
Huwa biss kodiċi li tpoġġi fuq Lambda.

2428
01:47:35,660 --> 01:47:38,560
Huwa biss data li tpoġġi fil DynamoDB.

2429
01:47:38,560 --> 01:47:41,340
Dan huwa mod aqwa
biex jibnu l-applikazzjonijiet.

2430
01:47:41,340 --> 01:47:43,970
>> UDJENZA: Allura huwa aktar
effimeru milli kieku jkun

2431
01:47:43,970 --> 01:47:45,740
jekk kien maħżun fuq server attwali?

2432
01:47:45,740 --> 01:47:46,823
>> Rick HOULIHAN: Assolutament.

2433
01:47:46,823 --> 01:47:49,190
Minħabba li server eżempju
jkollhom ikunu 24/07.

2434
01:47:49,190 --> 01:47:51,954
Għandu jkun disponibbli għall
xi ħadd biex jirreaġixxu għaliha.

2435
01:47:51,954 --> 01:47:52,620
Well raden liema?

2436
01:47:52,620 --> 01:47:55,410
S3 huwa disponibbli 24/7.

2437
01:47:55,410 --> 01:47:57,100
S3 dejjem jirrispondi.

2438
01:47:57,100 --> 01:47:59,320
U S3 huwa ħafna, tajjeb ħafna
li sservi up oġġetti.

2439
01:47:59,320 --> 01:48:02,590
Dawk l-oġġetti jistgħu jkunu fajls HTML, jew
JavaScript fajls, jew tkun xi tkun trid.

2440
01:48:02,590 --> 01:48:07,430
Inti tista 'taħdem applikazzjonijiet web ħafna sinjuri
minn bramel S3, u n-nies jagħmlu.

2441
01:48:07,430 --> 01:48:10,160
>> U hekk dan huwa l-idea hawnhekk
huwa li jitbiegħed mit-triq

2442
01:48:10,160 --> 01:48:11,270
aħna użati biex jaħsbu dwar dan.

2443
01:48:11,270 --> 01:48:14,270
Aħna kollha użati biex jaħsbu
f'termini ta 'servers u hosts.

2444
01:48:14,270 --> 01:48:16,580
Mhuwiex dwar dan aktar.

2445
01:48:16,580 --> 01:48:19,310
Huwa dwar l-infrastruttura bħala kodiċi.

2446
01:48:19,310 --> 01:48:22,470
Jintuża l-kodiċi tal-sħaba u
ħalli l-sħaba run dan għalik.

2447
01:48:22,470 --> 01:48:24,980
U dan huwa dak AWS qed tipprova tagħmel.

2448
01:48:24,980 --> 01:48:29,690
>> UDJENZA: Allura kaxxa deheb tiegħek fin-nofs
tal-API Gateway hija mhux server simili,

2449
01:48:29,690 --> 01:48:30,576
imma minflok hija just--

2450
01:48:30,576 --> 01:48:32,850
>> Rick HOULIHAN: Inti tista 'taħseb
li bħala server faċċata.

2451
01:48:32,850 --> 01:48:38,040
Kull ma huwa huwa li ser tieħu l-HTTP
jitolbu u mappa biex proċess ieħor.

2452
01:48:38,040 --> 01:48:39,192
Li kollox li tagħmel.

2453
01:48:39,192 --> 01:48:41,525
U f'dan il-każ, aħna qed mapping
li funzjoni Lambda.

2454
01:48:41,525 --> 01:48:44,119

2455
01:48:44,119 --> 01:48:45,410
Kull dritt, hekk li kollox sibt.

2456
01:48:45,410 --> 01:48:46,190
Grazzi ħafna.

2457
01:48:46,190 --> 01:48:46,800
I japprezzaw dan.

2458
01:48:46,800 --> 01:48:48,100
Naf irridu ftit matul iż-żmien.

2459
01:48:48,100 --> 01:48:49,980
U nisperaw li inti guys ltqajna
xi ftit ta 'informazzjoni

2460
01:48:49,980 --> 01:48:51,410
li tista 'tieħu l bogħod llum.

2461
01:48:51,410 --> 01:48:53,520
U I ruhna jekk I marru
fuq xi wħud kapijiet tiegħek,

2462
01:48:53,520 --> 01:48:56,697
imma hemm ħafna tajjeb ta '
għarfien fundamentali sisien

2463
01:48:56,697 --> 01:48:58,280
li naħseb hija ta 'valur ħafna għalik.

2464
01:48:58,280 --> 01:48:59,825
Allura nirringrazzjak talli me.

2465
01:48:59,825 --> 01:49:00,325
[Applause]

2466
01:49:00,325 --> 01:49:02,619
UDJENZA: [inaudible]
huwa meta inti kienu jgħidu

2467
01:49:02,619 --> 01:49:05,160
inti kellhom jgħaddu l-ħaġa
mill-bidu sat-tmiem

2468
01:49:05,160 --> 01:49:07,619
biex jiksbu l-valuri dritt
jew l-istess valuri,

2469
01:49:07,619 --> 01:49:09,410
Kif il-valuri
tinbidel jekk [inaudible].

2470
01:49:09,410 --> 01:49:10,480
>> Rick HOULIHAN: Oh, idempotent?

2471
01:49:10,480 --> 01:49:11,800
Kif tibdel l-valuri?

2472
01:49:11,800 --> 01:49:15,180
Ukoll, għaliex jekk I ma run
dan it-triq kollha sa l-aħħar,

2473
01:49:15,180 --> 01:49:19,770
imbagħad I do not know liema bidliet
saru fl-aħħar mil.

2474
01:49:19,770 --> 01:49:22,144
Huwa mhux se tkun l-
istess data bħal dak li rajt.

2475
01:49:22,144 --> 01:49:24,560
UDJENZA: Oh, sabiex inti biss
ma gotten l-input kollu.

2476
01:49:24,560 --> 01:49:24,770
Rick HOULIHAN: Dritt.

2477
01:49:24,770 --> 01:49:26,895
Ikollok tmur mill-bidu
sat-tmiem, u allura huwa

2478
01:49:26,895 --> 01:49:29,280
se tkun stat konsistenti.

2479
01:49:29,280 --> 01:49:31,520
Kessaħ.

2480
01:49:31,520 --> 01:49:35,907
>> UDJENZA: Allura inti wrewna DynamoDB
tista 'tagħmel dokument jew il-valur ċavetta.

2481
01:49:35,907 --> 01:49:38,740
U aħna qattgħu ħafna ħin fuq il-
valur ewlieni bil-hash u l-modi

2482
01:49:38,740 --> 01:49:40,005
flip madwar.

2483
01:49:40,005 --> 01:49:43,255
Meta inti ħares lejn dawk it-tabelli, huwa li
u tħalli warajha l-approċċ dokument?

2484
01:49:43,255 --> 01:49:44,600
>> Rick HOULIHAN: Jien ma
jgħidu telqet minnu lura.

2485
01:49:44,600 --> 01:49:45,855
>> UDJENZA: Huma kienu separati mill the--

2486
01:49:45,855 --> 01:49:49,140
>> Rick HOULIHAN: Bl-dokument
approċċ, il-tip ta 'dokument fil DynamoDB

2487
01:49:49,140 --> 01:49:50,880
huwa biss jaħsbu bħala attribut ieħor.

2488
01:49:50,880 --> 01:49:53,560
Huwa ta 'attribut li tinkludi
struttura ġerarkika data.

2489
01:49:53,560 --> 01:49:56,980
U mbagħad fil-mistoqsijiet,
inti tista 'tuża l-proprjetajiet

2490
01:49:56,980 --> 01:49:59,480
ta 'dawk l-oġġetti li jużaw Notazzjoni Għan.

2491
01:49:59,480 --> 01:50:03,562
So I tista 'filtru fuq nested
proprjetà tad-dokument JSON.

2492
01:50:03,562 --> 01:50:05,520
UDJENZA: Allura kull darba I
do approċċ dokument,

2493
01:50:05,520 --> 01:50:07,906
I tista 'tip ta' jaslu fil-tabular--

2494
01:50:07,906 --> 01:50:08,780
UDJENZA: Assolutament.

2495
01:50:08,780 --> 01:50:09,800
Udjenza: --indexes u
affarijiet inti biss tkellem dwar.

2496
01:50:09,800 --> 01:50:11,280
Rick HOULIHAN: Yeah, il-
indiċijiet u dak kollu li,

2497
01:50:11,280 --> 01:50:13,363
meta inti tixtieq li jagħmel indiċi tal
proprjetajiet tal-JSON,

2498
01:50:13,363 --> 01:50:18,230
il-mod li aħna d jkollhom biex tagħmel dan huwa jekk
inti daħħal oġġett JSON jew dokument

2499
01:50:18,230 --> 01:50:20,780
fis Dynamo, inti tuża flussi.

2500
01:50:20,780 --> 01:50:22,400
Flussi jkun jaqra l-input.

2501
01:50:22,400 --> 01:50:24,340
Youd tikseb dak JSON
joġġezzjona u inti jgħidu OK,

2502
01:50:24,340 --> 01:50:26,030
x'inhu l-proprjetà Irrid indiċi?

2503
01:50:26,030 --> 01:50:28,717
>> Inti toħloq tabella derivattiv.

2504
01:50:28,717 --> 01:50:30,300
Issa li l-mod kif jaħdem id-dritt issa.

2505
01:50:30,300 --> 01:50:32,650
Aħna ma jippermettu li inti indiċi
direttament dawk il-proprjetajiet.

2506
01:50:32,650 --> 01:50:33,520
>> UDJENZA: Tabularizing dokumenti tiegħek.

2507
01:50:33,520 --> 01:50:36,230
>> Rick HOULIHAN: Eżattament, iċċattjar
dan, tabularizing dan, eżattament.

2508
01:50:36,230 --> 01:50:37,415
Dak hu li għandek tagħmel miegħu.

2509
01:50:37,415 --> 01:50:37,860
>> UDJENZA: Grazzi.

2510
01:50:37,860 --> 01:50:39,609
>> Rick HOULIHAN: Yep,
assolutament, nirringrazzjak.

2511
01:50:39,609 --> 01:50:42,240
UDJENZA: Allura huwa tip ta '
Mongo jissodisfa classifers REDIS.

2512
01:50:42,240 --> 01:50:43,990
>> Rick HOULIHAN: Yeah,
huwa ħafna bħal dik.

2513
01:50:43,990 --> 01:50:45,940
Li deskrizzjoni tajba għal dan.

2514
01:50:45,940 --> 01:50:47,490
Kessaħ.

2515
01:50:47,490 --> 01:50:49,102