Kotlin Runs Taxes in Norway

on YouTube ↗42m

" summary

Norwegian Tax Administration runs production services in Kotlin across its cloud platform using Kotlin coroutines, Spring Boot (WebFlux), Vertex and Kafka; about 500 services, ~6.5k VMs and ~140k deploys so far this year give scale. A provisioning storyteller service implements async environment creation and works, but suspended functions expose gaps with Spring Security and some libraries. Build scripts move to Kotlin Gradle but suffer sluggishness and plugin quirks (swagger plugin). Internal DSLs (Playground-based test-data generator and tax-rule DSL) let domain experts author many real rules and prove effective.

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" chapters (52)

1. 0:00Introduction
2. 1:44Who are we
3. 2:15About me
4. 2:48About the talk
5. 3:17About the Norwegian Tax Administration
6. 4:13About the NTA
7. 4:39About NTA
8. 5:02Sprocket
9. 5:51Documentation
10. 6:13Custom configu
11. 6:27Open source mentality
12. 6:50Java compatibility
13. 7:25Developer satisfaction
14. 8:13NTIA satisfaction
15. 8:56What we learned
16. 10:18The Storyteller
17. 10:39Infrastructure
18. 11:25Segments
19. 12:16APIs
20. 12:43Tech Stack
21. 13:33General Experience
22. 14:07General Annoyances
23. 14:24Injecting
24. 15:26Auto Wiring
25. 15:55Spring Security
26. 17:20Suspended Flows
27. 17:35Web Flux
28. 18:23Spring Boot Endpoint
29. 19:22Spring Boot Extensions
30. 20:12Web Client
31. 21:05Weight Exchange
32. 21:45Mono Exchange
33. 22:51Summary
34. 24:09Coupling Gradle
35. 24:27Cons
36. 25:06Example
37. 25:55Advantages
38. 27:14DomainSpecific Languages
39. 27:58External vs Internal DSL
40. 28:54Use Cases
41. 29:12Background
42. 30:05Copeland Playground
43. 31:10Browser
44. 31:36Domain Expert
45. 34:02Content Server
46. 35:17Tax Process
47. 36:36Rules
48. 37:35Workinprocess
49. 38:24Metadata
50. 38:50Custom solution
51. 39:07Backend
52. 39:38Key takeaways

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