Hexagonal Architecture in Practice, Live Coding That Will Make Your Applications More Sustainable
summary
Live coding shows a Java Spring Boot app built domain-first with hexagonal architecture, unit and integration tests (JUnit, mock server) and a GitLab repo and slides linked. The domain module contains pure business logic (assemble a fleet for 150 passengers, example with five survivors and the Millennium Falcon with capacity six), adapters implement a StarshipInventory that handles swappy pagination and messy "passengers" strings, controller maps domain objects to REST resources, tests run green and a production stub enables incremental deployment.
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chapters (11)
- 0:00The rebels' problem
- 0:40Swapping and AI
- 1:43Classic layer flaws
- 6:40Hexagonal architecture
- 9:34API and SPI components
- 11:49Coding the domain
- 20:23Building the controller
- 31:35Integration testing
- 32:34Implementing the swappy client
- 40:34Refactoring for scalability
- 45:11Conclusion
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