Begin Event Sourcing with Lagom

Transcript

1. EVENT SOURCING WITH LAGOM
2. ME A few words about Ola Petersson @gotoOla ola.petersson@squeed.com JUG Gothenburg (JavaForum Göteborg)
3. ID.1 50
4. ID.1 51
5. ID.1 52
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. .
29. akka
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?