Clean Architecture in Spring Boot: Lessons from Refactoring
Clean Architecture in Spring Boot: Lessons from Refactoring

Clean Architecture in Spring Boot: Lessons from Refactoring

Author
Shiv Bade
Tags
spring boot
clean architecture
refactoring
Published
January 5, 2019
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Clean Architecture has been gaining popularity, and for good reason. This quarter, we applied it to refactor a mid-sized Spring Boot service that had become a tangled mess of controllers doing too much.
Key principles we implemented: - Clear separation of domain, application, and infrastructure layers - Dependency inversion using interfaces for data access and external systems - Keeping domain logic free of annotations and framework noise
Sample structure:
├── domain ├── application ├── infrastructure └── api
Benefits? Easier unit testing, fewer merge conflicts, and a much cleaner mental model.