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Event Sourcing In Laravel

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Avatar for Freek Van der Herten Freek Van der Herten
January 19, 2021
Technology
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Event Sourcing In Laravel

Avatar for Freek Van der Herten

Freek Van der Herten

January 19, 2021
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Transcript

  1. Event Sourcing 
 in Laravel

  2. About me Freek Van der Herten @freekmurze spatie.be freek.dev ohdear.app

    f l areapp.io

  3. Open Source 
 Software

  4. spatie.be/open-source

  5. spatie.be/videos

  6. Let's talk about event sourcing

  7. Talk overview Theory Projectors demo Aggregates demo

  8. Traditional application Write data in database An update means overwriting

    the old data The old data cannot be accessed anymore

  9. APPLICATION DATABASE TABLE value X

  10. APPLICATION DATABASE TABLE value X value Y

  11. Event Sourced Application The application will f i re o

    f f events Events will get written in a dedicated store Events are passed to consumers that create projections Aggregate, Aggregate Root...

  12. APP EVENTS Event Event 1

  13. APP EVENTS Event Event 1 Event 2

  14. APP EVENTS Event Event 1 Event 2 Event 3

  15. APP CONSUMER EVENTS PROJECTION Event Event 1 Event 2 Event

    3

  16. APP CONSUMER CONSUMER 2 EVENTS PROJECTION Event Event 1 Event

    2 Event 3 ANOTHER PROJECTION

  17. APP CONSUMER CONSUMER 2 EVENTS PROJECTION Event Event 1 Event

    2 Event 3 ANOTHER PROJECTION

  18. APP CONSUMER CONSUMER 2 EVENTS PROJECTION Event Event 1 Event

    2 Event 3 Event 4 ANOTHER PROJECTION

  19. Event Sourced Application Auditing requirements Extra reports needed Recording the

    unhappy path There is some setup required

  20. Laravel 
 Event Sourcing

  21. Laravel Event Sourcing Package made by Spatie Aggregates, Projectors &

    Reactors Beautifully integrated into Laravel Easy to get started with

  22. Demo

  23. Aggregates

  24. None
  25. None
  26. None
  27. None
  28. None
  29. None

  30. Demo

  31. Wrapping up

  32. spatie.be/docs/laravel-event-sourcing

  33. Packages spatie.be/docs/laravel-event-sourcing eventsauce.io

  34. Event sourcing makes the easy things harder… …and the harder

    things easier — Frank De Jonge

  35. Course eventsourcery.com

  36. Larabank github.com/spatie/larabank-traditional github.com/spatie/larabank-event-projector github.com/spatie/larabank-event-projector-aggregates

  37. One more thing

  38. spatie.be/event-sourcing The basics of event sourcing Best practices Laravel speci

    f i c examples Event sourced cart ETA July 2021

  39. Thank you! spatie.be/docs/laravel-event-sourcing spatie.be/products (only this week 25 % discount

    on everything) ohdear.app