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Mastering migrations
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Andriy
January 21, 2023
Programming
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Mastering migrations
Andriy
January 21, 2023
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Transcript
Mastering Migrations From Monolith to Microservices with Golden Master Testing
Mastering Migrations From Monolith to Microservices with Golden Master Testing
Microservices
Andriy Frankevych Software Engineer @ Docebo Looking for a better
profile picture @alsoknownasdrew on the interwebs
Part 1: Why Are We Doing This? - 1 product
- 1 dev team - 1 system
Part 1: Why Are We Doing This? - 2 products
- 1 dev team - 1 system
Part 1: Why Are We Doing This? - 3 products
- 1 dev team - 1 system
Part 1: Why Are We Doing This? - 3 products
- 1 dev team - 1 system - 1 bottleneck
Part 1: Why Are We Doing This? - 3 products
- 3 dev teams - 1 system
Part 1: Why Are We Doing This? - 3 products
- 3 dev teams - 1 system
Part 1: Why Are We Doing This? - 3 products
- 3 dev teams - 1 system - 1 bottleneck
Part 1: Why Are We Doing This? - 3 products
- 3 dev teams - 3 systems
Microservices: organizational solution
Part 2: What Are We Doing? - Giant spaghetti script
- No tests - No one knows how it works
Part 2: What Are We Doing? Identify responsibilities
Part 3: How Are We Doing This? Record Golden Master
Part 3: How Are We Doing This? - Run the
tests - Refactor - Run the tests
Part 3: How Are We Doing This? - Use Adapters
Abstract dependencies: you'll be glad you did
Part 3: How Are We Doing This? - Use Adapters
- Use Contract Testing
Part 3: How Are We Doing This? - Use Adapters
- Use Contract Testing - Throw away Golden master
Golden Master: refactoring solution
Part 4: What's next? - Use Contract Testing to migrate
frontend
Part 4: What's next? - Use Contract Testing to migrate
frontend - Repeat for other services
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