JWTB - Begin EventSourcing With Lagom

Transcript

1. EVENT SOURCING WITH LAGOM
2. JAVA WITH THE BEST...And me! Ola Petersson @gotoOla ola.petersson@squeed.com JUG Gothenburg (JavaForum Göteborg)
3. .
4. ID.1 50
5. ID.1 51
6. ID.1 52
8. 50 + 1 + 1 = 52
9. 50 + 1 + 1 = 52
10. COMMANDS EVENTS aggregates
11. COMMANDS EVENTS aggregates
12. COMMANDS EVENTS aggregates
13. CMD
14. CMD EVENT
15. CMD EVENT OLD
16. CMD EVENT OLD NEW
17. EVENT
18. { food: [], drinks: [] } commands Events AGGREGATE
19. { addBurger } { food: [], drinks: [] } commands Events AGGREGATE
20. { addBurger } { food: [], drinks: [] } { burgerAdded } commands Events AGGREGATE
21. { addBurger } { food: [burger], drinks: [] } { burgerAdded } commands Events AGGREGATE
22. { addBurger } { food: [burger], drinks: [] } { addBeer } { burgerAdded } commands Events AGGREGATE
23. { addBurger } { food: [burger], drinks: [] } { addBeer } { burgerAdded } { beerAdded } commands Events AGGREGATE
24. { addBurger } { food: [burger], drinks: [beer] } { addBeer } { burgerAdded } { beerAdded } commands Events AGGREGATE
25. { addBurger } { food: [burger], drinks: [beer] } { addSalad } { addBeer } { burgerAdded } { beerAdded } commands Events AGGREGATE
26. { addBurger } { food: [burger], drinks: [beer] } { addSalad } { addBeer } { burgerAdded } { saladAdded } { beerAdded } commands Events AGGREGATE
27. { addBurger } { food: [burger, salad ], drinks: [beer] } { addSalad } { addBeer } { burgerAdded } { saladAdded } { beerAdded } commands Events AGGREGATE
28. { addBurger } { food: [burger, salad ], drinks: [beer, water] } { addSalad } { addBeer } { addWater } { burgerAdded } { saladAdded } { beerAdded } { waterAdded } commands Events AGGREGATE
29. .
31. akka
32. akka
34. CHANGE HISTORY AUDIT LOG SPEED TIME TRAVEL
35. CHANGE HISTORY AUDIT LOG SPEED TIME TRAVEL
36. CHANGE HISTORY AUDIT LOG SPEED TIME TRAVEL
37. CHANGE HISTORY AUDIT LOG SPEED TIME TRAVEL
38. event storming
39. READ?
40. CQRS WRITE READ
41. EVENTUAL CONSISTENCY … a necessary evil
42. MICROSERVICES
43. SILVERBULLET!
44. SILVERBULLET!
45. Axon framework Sebastian Daschner (youtube) Eventuate EventStore Alternatives
46. http://widr.se/slides
47. http://widr.se/code
48. • lagom - lagomframework.com/ • Akka - https://akka.io/ • reactive microsystems - https://t.co/dm4wLJKV6f by Jonas Bonér • develop reactive microservices - https://www.lightbend.com/blog/developing-reactive-microservices-free -oreilly-mini-book-by-java-champion-markus-eisele by Markus Eisele • Event Sourcing - https://martinfowler.com/eaaDev/EventSourcing.html by Martin Fowler • Sebastian Daschner - EventSourcing and JavaEE tutorial https://www.youtube.com/watch?v=CYocFQvl6s0&list=PLEV9ul4qfGOZ5gWIPMl FGMUpenSs1EvxZ • Axon framework - http://www.axonframework.org/ • Eventuate - http://eventuate.io/ • EventStore - https://eventstore.org/
49. QUESTIONS?
50. http://widr.se/survey