Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Begin Event Sourcing with Lagom

Avatar for Ola Petersson Ola Petersson
October 23, 2017
Programming
200
2

Begin Event Sourcing with Lagom

Avatar for Ola Petersson

Ola Petersson

October 23, 2017

More Decks by Ola Petersson

See All by Ola Petersson
NDC_Oslo__DevOps_in_Real_Life_-_A_How_To.pdf
Avatar for Ola Petersson olbpetersson
0
86
Co(ol)routines - Javaforum Q1
Avatar for Ola Petersson olbpetersson
0
150
Coolroutines - non-blocking Kotlin
Avatar for Ola Petersson olbpetersson
0
100
JWTB - Begin EventSourcing With Lagom
Avatar for Ola Petersson olbpetersson
0
120
Begin EventSourcing with Lagom - Javaforum Q4 2017
Avatar for Ola Petersson olbpetersson
0
89
JavaOne - Reactive Java EE
Avatar for Ola Petersson olbpetersson
0
160
JHipster - The best way to breed a new app
Avatar for Ola Petersson olbpetersson
0
860
Reactive Java EE
Avatar for Ola Petersson olbpetersson
0
360

Other Decks in Programming

See All in Programming
OpenSpecのproposalにbrainstormingを持たせてみた
Avatar for Toranosuke Minamikawa tigertora7571
1
210
作るコストが小さくなった時代 幸せに働くために改めて考えたいこと 〜エンジニアとして価値を出し続けるために注視している二分野〜
Avatar for YuppeEng yuppeeng
0
190
人間の目はかわらない、だからJPEGは30年もつ
Avatar for yuzneri yuzneri
12
18k
Lean は証明の正しさを確認するためだけのツールって思ってませんか？
Avatar for 井上亜星 inoueasei
1
150
源内ハンズオン概要編
Avatar for Hideyuki Nagata hideg
0
140
わからない話を追いかけたら、プログラミング言語を作る側にいた
Avatar for ydah ydah
3
480
全PRの83%がAIレビューだけでマージできるようになった開発組織はその後どうなったか
Avatar for a-thug athug
1
1.5k
ルールを書いて終わらせないハーネスエンジニアリング
Avatar for Yuji Yamaguchi yug1224
4
1.9k
PostgreSQL 18で考えるUUID主キー
Avatar for Kazuhiro Seo kazuhiro1982
0
460
Terraform標準の組織で AWS CDKをどう使うか
Avatar for mu7889yoon / Yuta Nakamura mu7889yoon
1
490
Claude CodeとAgentCore Gatewayを繋ぐ際の認証認可 / Authentication and authorization when connecting Claude Code with AgentCore Gateway
Avatar for Har1101 har1101
2
260
FDEが実現するAI駆動経営の現在地
Avatar for ryuta sakamoto gonta
2
270

Featured

See All Featured
The Pragmatic Product Professional
Avatar for Laura Van Doore lauravandoore
37
7.4k
Fashionably flexible responsive web design (full day workshop)
Avatar for Andy Clarke malarkey
408
67k
AI Search: Implications for SEO and How to Move Forward - #ShenzhenSEOConference
Avatar for Aleyda Solis aleyda
1
1.3k
Practical Orchestrator
Avatar for Shlomi Noach shlominoach
191
12k
DBのスキルで生き残る技術 - AI時代におけるテーブル設計の勘所
Avatar for soudai sone soudai
PRO
68
56k
Agile Actions for Facilitating Distributed Teams - ADO2019
Avatar for Mark Kilby mkilby
0
250
A designer walks into a library…
Avatar for Paul Jervis Heath pauljervisheath
211
24k
The Language of Interfaces
Avatar for Des Traynor destraynor
162
27k
Ten Tips & Tricks for a 🌱 transition
Avatar for Manu Carrasco Molina stuffmc
0
160
ピンチをチャンスに：未来をつくるプロダクトロードマップ #pmconf2020
Avatar for Aki / @LoveIdahoBurger aki_iinuma
128
56k
Exploring the relationship between traditional SERPs and Gen AI search
Avatar for Ray Grieselhuber raygrieselhuber
PRO
2
4.2k
Skip the Path - Find Your Career Trail
Avatar for Mark Kilby mkilby
1
180

Transcript

  1. EVENT SOURCING WITH LAGOM

  2. ME A few words about Ola Petersson @gotoOla [email protected] JUG

    Gothenburg (JavaForum Göteborg)

  3. ID.1 50

  4. ID.1 51

  5. ID.1 52

  6. None

  7. 50 + 1 + 1 = 52

  8. COMMANDS EVENTS aggregates

  9. COMMANDS EVENTS aggregates

  10. COMMANDS EVENTS aggregates

  11. CMD

  12. CMD EVENT

  13. CMD EVENT OLD

  14. CMD EVENT OLD NEW

  15. EVENT

  16. { food: [], drinks: [] } commands Events AGGREGATE

  17. { addBurger } { food: [], drinks: [] } commands

    Events AGGREGATE

  18. { addBurger } { food: [], drinks: [] } {

    burgerAdded } commands Events AGGREGATE

  19. { addBurger } { food: [burger], drinks: [] } {

    burgerAdded } commands Events AGGREGATE

  20. { addBurger } { food: [burger], drinks: [] } {

    addBeer } { burgerAdded } commands Events AGGREGATE

  21. { addBurger } { food: [burger], drinks: [] } {

    addBeer } { burgerAdded } { beerAdded } commands Events AGGREGATE

  22. { addBurger } { food: [burger], drinks: [beer] } {

    addBeer } { burgerAdded } { beerAdded } commands Events AGGREGATE

  23. { addBurger } { food: [burger], drinks: [beer] } {

    addSalad } { addBeer } { burgerAdded } { beerAdded } commands Events AGGREGATE

  24. { addBurger } { food: [burger], drinks: [beer] } {

    addSalad } { addBeer } { burgerAdded } { saladAdded } { beerAdded } commands Events AGGREGATE

  25. { addBurger } { food: [burger, salad ], drinks: [beer]

    } { addSalad } { addBeer } { burgerAdded } { saladAdded } { beerAdded } commands Events AGGREGATE

  26. { addBurger } { food: [burger, salad ], drinks: [beer,

    water] } { addSalad } { addBeer } { addWater } { burgerAdded } { saladAdded } { beerAdded } { waterAdded } commands Events AGGREGATE

  27. .

  28. None

  29. akka

  30. None

  31. CHANGE HISTORY AUDIT LOG SPEED TIME TRAVEL

  32. CHANGE HISTORY AUDIT LOG SPEED TIME TRAVEL

  33. CHANGE HISTORY AUDIT LOG SPEED TIME TRAVEL

  34. CHANGE HISTORY AUDIT LOG SPEED TIME TRAVEL

  35. event storming

  36. READ?

  37. CQRS WRITE READ

  38. EVENTUAL CONSISTENCY … a necessary evil

  39. MICROSERVICES

  40. QUESTIONS?