Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
AWS DynamoDB Accelerator (DAX) 101
Search
Ken Wagatsuma
February 14, 2020
Programming
2
7.2k
AWS DynamoDB Accelerator (DAX) 101
Introduction to AWS DynamoDB Accelerator (DAX)
Ken Wagatsuma
February 14, 2020
Tweet
Share
More Decks by Ken Wagatsuma
See All by Ken Wagatsuma
Pregel Graph Compute Engines - Supersteps Exampls
kenju
0
210
Kafka on Kubernetes with Strimzi
kenju
0
170
Moden browser introduction
kenju
1
410
Cookpad summer internship 2019 - API
kenju
0
10k
Introduction to Design Patterns
kenju
0
86
GraphQL Asia 2019 "Re-architecture of a decade-old app with BFF/GraphQL"
kenju
0
9k
Introduction to TypeScript
kenju
0
730
Introduction to Programmatic Ad
kenju
0
260
社内管理システムのための技術選定
kenju
0
770
Other Decks in Programming
See All in Programming
テストコードはもう書かない:JetBrains AI Assistantに委ねる非同期処理のテスト自動設計・生成
makun
0
540
概念モデル→論理モデルで気をつけていること
sunnyone
3
300
実用的なGOCACHEPROG実装をするために / golang.tokyo #40
mazrean
1
300
🔨 小さなビルドシステムを作る
momeemt
4
690
デザイナーが Androidエンジニアに 挑戦してみた
874wokiite
0
550
Design Foundational Data Engineering Observability
sucitw
3
200
AI時代のUIはどこへ行く?
yusukebe
18
9.1k
AWS発のAIエディタKiroを使ってみた
iriikeita
1
190
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
420
パッケージ設計の黒魔術/Kyoto.go#63
lufia
3
440
奥深くて厄介な「改行」と仲良くなる20分
oguemon
1
570
Azure SRE Agentで運用は楽になるのか?
kkamegawa
0
2.5k
Featured
See All Featured
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.9k
Side Projects
sachag
455
43k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
285
14k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
8
530
Agile that works and the tools we love
rasmusluckow
330
21k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
61k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
53
3k
GraphQLの誤解/rethinking-graphql
sonatard
72
11k
Faster Mobile Websites
deanohume
309
31k
Statistics for Hackers
jakevdp
799
220k
How to Think Like a Performance Engineer
csswizardry
26
1.9k
Transcript
DAX 101 1 2020/2/15 Kenju Wagatsuma
DAX Wrap Up 2
DAX is… DynamoDB-specific in-memory cache store 3
[DAX] Glossary of Terms 4 5FSN %FTDSJQUJPO /PEFT "OPEFJTUIFNJOJNVNDPNQPOFOUGPSB%"9DMVTUFSl1SJNBSZOPEFzIBOEMFSFBE
XSJUFSFRVFTUTBOElSFQMJDBOPEFTzPOMZIBOEMFSFBESFRVFTUT $MVTUFST "DMVTUFSJTDPNQPTFEGSPN OPEFT 1BSBNFUFS(SPVQT :PVDBODIBOHF55-CZTFUUJOHDVTUPN1BSBNFUFS(SPVQT
[DAX] Comparison to other cache store 5 %"9 &MBTUJDBDIFNFNDBDIFE JONFNPSZ
.BOBHFE ✅ ✅ 4IBSFEDBDIF ✅ ✅ #BDLFOEEBUBTPVSDF %ZOBNP%#POMZ BOZUIJOH .Z42- %JTL 31$ FUD .FUSJDT ✅ ✅ 55- ⚠ HMPCBM55- ✅ ⚠ IBSEXPSLSFRVJSFE 1FSGPSNBODF ЖdNT dNT ЖdЖ
[DAX] Single-leader Replication 6 +3 nodes for different Multi-A/Z for
production Background replication (eventually consistent model) Single “primary node” handles all write requests
Subnet C Subnet B DAX Cluster Subnet A [DAX] Single-leader
Replication - Write 7 Primary Replica Replica
DAX Cluster [DAX] Single-leader Replication - Write 8 Primary Replica
Replica Application DynamoDB Table DynamoDB Table Write Read
DAX Cluster [DAX] Single-leader Replication - Replicate 9 Primary Replica
Replica Application DynamoDB Table DynamoDB Table Write Read
DAX Cluster [DAX] Single-leader Replication - Read 10 Primary Replica
Replica Application DynamoDB Table DynamoDB Table Write Read
[DAX] Cache Algorithm 11 Least Recently Used (LRU) cache Negative
cache also implemented Eviction happens when items are taken & cache is full Global Time-To-Live (TTL)
[DAX] Item Cache / Query Cache 12 Item Cache Query
Cache Operation GetItem / BatchGetItem Query / Scan Metrics ItemCacheHits/ItemCacheMisses QueryCacheHits/QueryCacheMisses ScanCacheHits/ScanCacheMisses
[DAX] Write Strategy - Write-Through 13 #write #read Application DAX
DynamoDB Application DAX DynamoDB
[DAX] Write Strategy - Write-Around 14 #write #read Application DynamoDB
Application DAX DynamoDB
[DAX] Write Strategy 15 8SJUF5ISPVHI 8SJUF"SPVOE 1SPT 4ZODISPOJ[FEJUFNTCFUXFFO%"9 BOE%ZOBNP%# 8SJUFDBOTDBMF
FHCVMLVQEBUF $POT ☹8SJUFPQFSBUJPOIBTPWFSIFBE ☹*UFNTDBOCFJODPOTJTUFOU JGPUIFS BQQXSJUFUP%ZOBNP%#EJSFDUMZ ☹&WFOUVBMMZ$POTJTUFOU JUFNTJO%"9 OPEFTDBOCFPVUEBUFE
[DAX] Within VPC + Multi-A/Z 16
[DAX] Limitation 17 Maximum nodes is 10 (1 primary node
+ ~9 replica nodes) Maximum nodes is 50 per Region. Maximum Parameter Groups is 20 per Region Maximum DAX Subnet Groups is 50 per Region. Maximum subnets per groups is 20.
Monitoring 18
[Monitoring] CloudWatch Metrics 19 NFUSJDT EFTDSJQUJPO $166UJMJ[BUJPO PG$16VUJMJ[BUJPOUTNBMMVTFW$16 ⚠:PVOFFEUPTDBMFVQJGUIJTNFUSJDTJTTBUVSBUFE *UFN$BDIF)JUT
*UFN$BDIF.JTTFT $BMDVMBUF$BDIF)JU3BUJP GSPNUIFTFNFUSJDT ⚠*UFN$BDIF2VFSZ$BDIF
[Monitoring] CloudWatch Metrics 20 NFUSJDT EFTDSJQUJPO 5ISPUUMJOH3FRVFTU$PVOU PGSFRVFTUTUISPUUMFECZUIFOPEFPSDMVTUFS ⚠5ISPUUMFEBU%"95ISPUUMFEBU%ZOBNP%# 'BJMFE3FRVFTU$PVOU
PGSFRVFTUTUIBUSFTVMUFEJOBOFSSPSSFQPSUFE ⚠&SSPS3FR$PVOU5ISPUUMFE 'BJMFE
[Monitoring] CloudWatch Metrics 21 NFUSJDT EFTDSJQUJPO &WJDUFE4J[F ⚠*G$BDIF)JU3BUJP&WJDUFE4J[FJTHSPXJOH UIF XPSLJOHTFUNJHIUJODSFBTF4IPVMEDPOTJEFSTDBMFVQ
$MJFOU$POOFDUJPOT PGTJNVMUBOFPVTDPOOFDUJPOTGSPNDMJFOUT ⚠$MJFOU$PO$PVOU㲈PG3VOOJOH5BTLT
[Monitoring] Grafana 22
[Monitoring] SLI/SLO 23
Alerting 24
[Alerting] CW Alarm - Infrastructure 25 CW Alarm SNS Topic
Lambda Slack
[Alerting] CW Alarm - CPUUtilization 26
[Alerting] CW Alarm - Cache Hit Ratio 27 ItemCacheHitRatio =
ItemCacheHits / ( ItemCacheHits + ItemCacheMisses )
[Alerting] CW Alarm - Cache Hit Ratio 28
[Alerting] DAX Events - Infrastructure 29 DAX Event SNS Topic
Lambda Slack
[Alerting] DAX Events - Infrastructure 30 failure/success in adding a
node changes to the security groups