--- title: What Spring Boot Taught Me About Clean Architecture description: A developer's journey from writing monolithic Spring Boot controllers to implementing Clean Architecture principles. The piece demonstrates how to refactor... canonical: https://daily.dev/posts/what-spring-boot-taught-me-about-clean-architecture-jipdjbyjf twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: What Spring Boot Taught Me About Clean Architecture | daily.dev og:description: A developer's journey from writing monolithic Spring Boot controllers to implementing Clean Architecture principles. The piece demonstrates how to refactor... og:url: https://daily.dev/posts/what-spring-boot-taught-me-about-clean-architecture-jipdjbyjf og:image: https://api.daily.dev/og/posts/jiPdjBYjf.png og:image:alt: What Spring Boot Taught Me About Clean Architecture og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # What Spring Boot Taught Me About Clean Architecture **[Javarevisited](https://daily.dev/sources/javarevisited)** · 5 min read · 91 upvotes · 3 comments ## Summary A developer's journey from writing monolithic Spring Boot controllers to implementing Clean Architecture principles. The piece demonstrates how to refactor tightly-coupled code into layered architecture with proper separation of concerns, showing practical examples of moving business logic from controllers to service layers. It connects Clean Architecture concepts to SOLID principles and explains how proper layering improves testability and maintainability in Java applications. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@denysdudarev** · 4 upvotes > Even though this post is supposed to teach how to follow Clean Architecture, the guy returned a domain model User instead of a DTO... ## Similar posts on daily.dev - [Clean Architecture Explained: Building Software That Stands the Test of Time](https://daily.dev/posts/clean-architecture-explained-building-software-that-stands-the-test-of-time-acdblphuf) · Medium · 1 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java), [#architecture](https://daily.dev/tags/architecture), [#spring-boot](https://daily.dev/tags/spring-boot) [View this post on daily.dev](https://daily.dev/posts/what-spring-boot-taught-me-about-clean-architecture-jipdjbyjf) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"What Spring Boot Taught Me About Clean Architecture","url":"https://daily.dev/posts/what-spring-boot-taught-me-about-clean-architecture-jipdjbyjf","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/what-spring-boot-taught-me-about-clean-architecture-jipdjbyjf"},"datePublished":"2025-10-17T12:59:59.447Z","dateModified":"2025-10-17T13:00:24.623Z","description":"A developer's journey from writing monolithic Spring Boot controllers to implementing Clean Architecture principles. 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