Mastering migrations

Transcript

1. Mastering Migrations From Monolith to Microservices with Golden Master Testing
2. Mastering Migrations From Monolith to Microservices with Golden Master Testing
3. Microservices
4. Andriy Frankevych Software Engineer @ Docebo Looking for a better profile picture @alsoknownasdrew on the interwebs
5. Part 1: Why Are We Doing This? - 1 product - 1 dev team - 1 system
6. Part 1: Why Are We Doing This? - 2 products - 1 dev team - 1 system
7. Part 1: Why Are We Doing This? - 3 products - 1 dev team - 1 system
8. Part 1: Why Are We Doing This? - 3 products - 1 dev team - 1 system - 1 bottleneck
9. Part 1: Why Are We Doing This? - 3 products - 3 dev teams - 1 system
10. Part 1: Why Are We Doing This? - 3 products - 3 dev teams - 1 system
11. Part 1: Why Are We Doing This? - 3 products - 3 dev teams - 1 system - 1 bottleneck
12. Part 1: Why Are We Doing This? - 3 products - 3 dev teams - 3 systems
13. Microservices: organizational solution
14. Part 2: What Are We Doing? - Giant spaghetti script - No tests - No one knows how it works
15. Part 2: What Are We Doing? Identify responsibilities
16. Part 3: How Are We Doing This? Record Golden Master
17. Part 3: How Are We Doing This? - Run the tests - Refactor - Run the tests
18. Part 3: How Are We Doing This? - Use Adapters
19. Abstract dependencies: you'll be glad you did
20. Part 3: How Are We Doing This? - Use Adapters - Use Contract Testing
21. Part 3: How Are We Doing This? - Use Adapters - Use Contract Testing - Throw away Golden master
22. Golden Master: refactoring solution
23. Part 4: What's next? - Use Contract Testing to migrate frontend
24. Part 4: What's next? - Use Contract Testing to migrate frontend - Repeat for other services
25. Thanks References: - Fred Brooks: The Mythical Man-Month - Eric Evans: Domain Driven Design - Eberhard Wolff: Microservices - Michael Feathers: Working Effectively with Legacy Code - Contract testing: stoplight.io | pact.io - Slides: https://speakerdeck.com/alsoknownasdrew/mastering-migrations