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
Firestore で CQRS やってみた
Search
Yuji Kinjo
May 28, 2019
Technology
22
5k
Firestore で CQRS やってみた
Yuji Kinjo
May 28, 2019
Tweet
Share
More Decks by Yuji Kinjo
See All by Yuji Kinjo
SLOを組織文化にするための挑戦
yukin01
1
3.1k
Other Decks in Technology
See All in Technology
ビズリーチが挑む メトリクスを活用した技術的負債の解消 / dev-productivity-con2025
visional_engineering_and_design
3
6.3k
FOSS4G 2025 KANSAI QGISで点群データをいろいろしてみた
kou_kita
0
380
「良さそう」と「とても良い」の間には 「良さそうだがホンマか」がたくさんある / 2025.07.01 LLM品質Night
smiyawaki0820
1
500
KiCadでPad on Viaの基板作ってみた
iotengineer22
0
290
「クラウドコスト絶対削減」を支える技術—FinOpsを超えた徹底的なクラウドコスト削減の実践論
delta_tech
4
140
Lambda Web Adapterについて自分なりに理解してみた
smt7174
6
160
Delegating the chores of authenticating users to Keycloak
ahus1
0
140
Should Our Project Join the CNCF? (Japanese Recap)
whywaita
PRO
0
330
asken AI勉強会(Android)
tadashi_sato
0
180
React開発にStorybookとCopilotを導入して、爆速でUIを編集・確認する方法
yu_kod
1
190
Tech-Verse 2025 Global CTO Session
lycorptech_jp
PRO
0
1.6k
品質と速度の両立:生成AI時代の品質保証アプローチ
odasho
1
200
Featured
See All Featured
A better future with KSS
kneath
239
17k
Being A Developer After 40
akosma
90
590k
Embracing the Ebb and Flow
colly
86
4.7k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
331
22k
We Have a Design System, Now What?
morganepeng
53
7.7k
Into the Great Unknown - MozCon
thekraken
39
1.9k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
107
19k
GraphQLの誤解/rethinking-graphql
sonatard
71
11k
The Language of Interfaces
destraynor
158
25k
Typedesign – Prime Four
hannesfritz
42
2.7k
Art, The Web, and Tiny UX
lynnandtonic
299
21k
Agile that works and the tools we love
rasmusluckow
329
21k
Transcript
Firestore Ͱ CQRS ͬͯΈͨ Firebase Meetup #13 @DeNA
Kinjo Yuji iOS Engineer Twitter: @_yukin01 GitHub: @yukin01
ɾσʔλϞσϦϯά͕͍͠ͱ͍͏ ɾ࣮ࡍʹͬͯΈΔ ɾCQRS ͕͑Δ͔͠Εͳ͍ ɾ·ͱΊ ͜ΜͳΛ͠·͢
ϦϨʔγϣϯγοϓͲ͏දݱ͍ͯ͠·͔͢ʁ
Top-level Collection or Sub Collection collection("posts") .where("room_id", "==", "room_001") .orderBy("createdAt",
"desc") collection("rooms") .doc("room_001") .collection("posts") .orderBy("createdAt", "desc") Top-level collection Sub collection
Sub collection Map (Array) or Sub Collection
͍ΖΜͳཁૉͰܾ·ͬͯ͘Δʢઈରղͳ͍ ɾଟॏ => 1 : 1, 1 : n, n
: n ɾࢠυΩϡϝϯτͷϥΠϑαΠΫϧ ɾΫΤϦ ɾॻ͖ࠐΈͷ੍ݶ document => 1 times/s collection => 500 times/s ɾetc.
Firestore ͰͰ͖Δ͜ͱࣗମ૿͍͑ͯΔ ɾarrayUnion/array-contains ɾincrement ɾCollection Group ʢΩϟονΞοϓେมʣ
࠷ۙࢥ͏͜ͱ ϢʔεέʔεʢͲ͏͍͏σʔλΛऔಘɾߋ৽͍͔ͨ͠ʣ ʹΑͬͯ ࠷దͳσʔλߏ͕ܾ·Δʢ࠷దղ͋Δ => ߏʹΑͬͯσʔλͷऔಘɾߋ৽͕ ඇৗʹ͘͠ͳΔ͜ͱ…
νϟοτػೳͷσʔλߏΛߟ͑Δ
͜Μͳײ͡
Contents - ϧʔϜ໊ - ΞΠίϯը૾ - ϝϯόʔ - ະಡ -
࠷৽ϝοηʔδ Conditions - ॴଐ͍ͯ͠ΔϧʔϜͷΈ - ߘ࣌ؒͰιʔτ
Contents - ϧʔϜ໊ - ΞΠίϯը૾ - ϝϯόʔ - ະಡ -
࠷৽ϝοηʔδ Conditions - ॴଐ͍ͯ͠ΔϧʔϜͷΈ - ߘ࣌ؒͰιʔτ
Contents - ϧʔϜ໊ - ΞΠίϯը૾ - ϝϯόʔ - ະಡ -
࠷৽ϝοηʔδ Conditions - ॴଐ͍ͯ͠ΔϧʔϜͷΈ - ߘ࣌ؒͰιʔτ
Contents - ϧʔϜ໊ - ΞΠίϯը૾ - ϝϯόʔ - ະಡ -
࠷৽ϝοηʔδ Conditions - ॴଐ͍ͯ͠ΔϧʔϜͷΈ - ߘ࣌ؒͰιʔτ
Contents - ϧʔϜ໊ - ΞΠίϯը૾ - ϝϯόʔ - ະಡ -
࠷৽ϝοηʔδ Conditions - ॴଐ͍ͯ͠ΔϧʔϜͷΈ - ߘ࣌ؒͰιʔτ
Contents - ϧʔϜ໊ - ΞΠίϯը૾ - ϝϯόʔ - ະಡ -
࠷৽ϝοηʔδ Conditions - ॴଐ͍ͯ͠ΔϧʔϜͷΈ - ߘ࣌ؒͰιʔτ
·ͣγϯϓϧʹ
ɾϧʔϜ໊ɺ ΞΠίϯը૾ɺ ϝϯόʔ ɾarray-contains ͷΫΤϦ ɾະಡͲ͏͢Δ…ʁ
ɾະಡ ࠷৽ϝοηʔδ ɾཁ݅ຬͨͤΔ ɾWrite ͷ੍ݶ͕…" (unreadCount ʹूத͢Δ)
ɾSub Collection Խ ɾཁ݅ຬͨͤΔ ɾ1ճͷΫΤϦͰ औಘͰ͖ͳ͍ Rooms => Members =>
Messages
ɾJOIN ͢Δύλʔϯ ɾਖ਼نԽ ɾΫϥΠΞϯταΠυ JOIN ɾ͍ΘΏΔ N+1 ʢઈରμϝͱ͍͏Θ͚Ͱͳ͍ʣ ɾJOIN
͠ͳ͍ύλʔϯ ɾඇਖ਼نԽ ɾඞཁͳσʔλΛԽʢίϐʔʣ͢Δ ɾRDB Ͱߟ͑ʹ͍͕͘ NoSQL ͰҰൠత
ɾJOIN ͢Δύλʔϯ ɾਖ਼نԽ ɾΫϥΠΞϯταΠυ JOIN ɾ͍ΘΏΔ N+1 ʢઈରμϝͱ͍͏Θ͚Ͱͳ͍ʣ ɾJOIN
͠ͳ͍ύλʔϯ ɾඇਖ਼نԽ ɾඞཁͳσʔλΛԽʢίϐʔʣ͢Δ ɾRDB Ͱߟ͑ʹ͍͕͘ NoSQL ͰҰൠత <= ࠾༻ͯ͠ΈΔ
ඇਖ਼نԽʢίϐʔʣͷ࣮ݱํ๏ ɾTransaction or Batch Write ɾAtomic ͳॻ͖ࠐΈΛ࣮ݱ ɾ࠷େ 500 ݅ͷ੍ݶ͋Γ
ɾFirestore Trigger ɾ݁Ռ߹ੑ ɾΤϥʔॲཧɺϦτϥΠॲཧͷඞཁੑ
None
͚ͩ͜͜ݟΕྑ͍
Trigger functions
Trigger functions
Trigger functions
Batch Write
ϐλΰϥεΠον
CQRS (Command Query Responsibility Segregation) Command (ߋ৽ܥ) ͱ Query (ࢀরܥ)
ͰػೳΛׂ DDD ͷจ຺ͰޠΒΕΔ͜ͱ͕ଟ͍ ES (Event Sourcing) ʮঢ়ଶʯͰͳ͘ʮΠϕϯτʯΛه͍ͯ͘͠ߟ͑ํ ҙͷঢ়ଶΠϕϯτΛ࠶ੜ͢Ε࠶ݱͰ͖Δ CQRS ͱΈ߹ΘͤͰΑ͘ޠΒΕ͍ͯΔ
h"ps://www.slideshare.net/AmazonWebServices/ srv301op=mizing-serverless-applica=on-data-=ers-with-amazon-dynamodb
https://www.slideshare.net/AmazonWebServices/ srv301optimizing-serverless-application-data-tiers-with-amazon-dynamodb
Command ଆΠϕϯτ͚ͩΛه (ཁCreate ͷΈ) => ᘳʹ࣮ݱ͢ΔͷΊ͓ͯ͘ σʔλͷྲྀΕΛҰํʹ͢Δͱ͜ΖΛऔΓೖΕΔ
͜͏͍͏Πϝʔδ
None
ɾਖ਼نԽ ɾηΩϡϦςΟϧʔϧͰ Write ͷΈڐՄ ɾ΄΅ RDB ͷײ֮
ɾඇਖ਼نԽ ɾηΩϡϦςΟϧʔϧͰ Read ͷΈڐՄ ɾΫϥΠΞϯτͷॲཧָ͕ ɾཁ݅มߋʹରԠ͍͢͠
Trigger functions Command -> Query ͷҰํ
·ͱΊ - Firestore + Functions Ͱ CQRS ΛऔΓೖΕͨ σʔλϞσϦϯάΛ࣮ -
Command ͱ Query Ͱશʹ - ϐλΰϥεΠονΛҰํʹͰ͖Δ - ͕ - ঢ়ଶ͕ଟ͘ɺRead ͕සൟͳϢʔεέʔεͰ ༗ޮ͔