Microservices - To hell and back

Do's and don'ts when you move from a legacy monolith to micro-services.

The experience of being wrapping up a bunch of micro-services under a single API.

What, and how to test when you are 100% using micros-services.

And how to keep the micro-services mindset consistent.

Transcript

1. Microservices To hell and back
2. RUBENS STULZER Full Stack Rails Developer ~ UX Designer @RubensStulzer stulzer
4. Back in Colombia !
5. Spanish Database Modeling
6. Big and Bad monolith with a bad git history
7. Around 3 months To bootstrap projects and takeaway code from the big monolith
8. We forgot one thing
9. The Database
10. Yep, that’s bad for ya!
11. Current Status: The big database still exist But will die, next quarter
12. What I’ve being doing
14. API Gateway
15. And a little more than that
16. OAuth
17. Image Processing
18. API Contract "modification"
19. { … "listingType": "RENTA_VENTA" … }
20. { … "listingType": { "rent": true, "sale": true } … }
21. Big Wrapper or The backend of the backend
22. API Versioning
23. Go for simple
24. Namespace is good enough GET /v1/listings/locations GET /v1/listings/types POST /v1/listings/report GET /v1/listings/features POST /v1/listings/price-estimate
25. Listings V1 to V2 • Same Contract • Zero maintenance on Clients • Lot’s of work on mappings
26. Leads API to Leadr • Maintenance on clients • Client should make decisions
27. Timeouts
28. Fail fast
29. Create not so tight timeouts when you know you have a slow API/endpoint
30. Too Much Network
31. The micro services world have some problems that monoliths don't
32. Request little history
33. Client calls /v1/listings/report => Publishers API Publishers API calls => Listings API Listings API calls => LQS -> which reads from a DB => Leads API => Calls Account API Accounts API | -> reads from DB => Call SalesForce
34. LOG IT X-RequestID
35. Tests
36. Kill "Microservices" before its too late - Chad Fowler https://www.youtube.com/watch?v=-UKEPd2ipEk The Majestic Monolith - DHH https://m.signalvnoise.com/the-majestic-monolith-29166d022228 Monolith First - Martin Fowler https://martinfowler.com/bliki/MonolithFirst.html
38. http://www.vivareal.com.br/empresa/carreira/vagas/
39. Thank You