Implement the monolith - the one well modularized

on YouTube ↗50m

" summary

Case study of turning a legacy service into a modularized monolith shows concrete steps: define a module API as the only exported class, write unit tests for the API, add a Jenkins build step that runs ArchUnit rules, and scan modules gradually. Enabling the main rule initially surfaces about 3,000 violations so teams fix the smallest module first (50–60 violations), move or elevate classes, use mob programming for decisions, and patch gaps like Groovy test detection.

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" chapters (40)

1. 0:00Intro
2. 1:28Start with monolith first
3. 3:20A kind of agenda
4. 4:21The monolith or a microservice
5. 5:32The perfect microservice
6. 7:06There's this small feature... GDPR
7. 9:11And one more: T&C
8. 12:46Two modules and... the rest
9. 13:31DB Relations
10. 15:33The future: replace Identity module
11. 16:31We know where we're going
12. 17:41Broken boundaries
13. 18:24Is there a tool to help us
14. 20:44ArchUnit
15. 21:49Example: Field injection
16. 26:03Example: Coding rules
17. 26:50Example: layered architecture
18. 28:28Example: Slices
19. 29:31More examples
20. 30:34Access module using its API
21. 31:18Rule #1: Access Module via API
22. 32:14Rule #1: Implementation
23. 33:55Rule #1: Should be included in scan
24. 34:32Rule #1: Rule check
25. 36:39Rule #1: Actual dependency check
26. 37:17Module has API
27. 37:39Rule #2: Implementation
28. 38:26Module API is unit tested
29. 39:14Module internal architecture
30. 39:59New build step
31. 40:19Start with a simple one
32. 41:32Approach
33. 42:23The next one
34. 43:45Mob programming
35. 44:48Other simple modules
36. 45:38Create a new module
37. 46:00Largest modules comes last
38. 46:33Cohesion
39. 47:39Next steps
40. 48:36DEVOX UKRAINE

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