Where Clean Architecture breaks in real systems
You're using Clean Architecture. The hard part is getting the implementation decisions right: โช Should ORM entities be part of the domain? โช Where should business logic live? โช How should external systems be integrated without leaking into the core? โช When is an abstraction usefulโand when is it over-engineering? In real systems, this is where teams struggle.
Where teams get it wrong
๐ญ. ๐ข๐ฅ๐ ๐ฒ๐ป๐๐ถ๐๐ถ๐ฒ๐ ๐บ๐ถ๐๐๐ฎ๐ธ๐ฒ๐ป ๐ณ๐ผ๐ฟ ๐๐ต๐ฒ ๐ฑ๐ผ๐บ๐ฎ๐ถ๐ป ๐บ๐ผ๐ฑ๐ฒ๐น ORM entities and repository interfaces get treated as the domain, because Clean Architecture and the ORM use the same words. So the system looks decoupled โ but the domain is still tied to the database, and the day the ORM changes, the change ripples everywhere. ๐ฎ. ๐๐๐๐ถ๐ป๐ฒ๐๐ ๐น๐ผ๐ด๐ถ๐ฐ ๐ณ๐ผ๐ฟ๐ฐ๐ฒ๐ฑ ๐ถ๐ป๐๐ผ ๐บ๐ฒ๐บ๐ผ๐ฟ๐, ๐๐ผ ๐๐ต๐ฒ ๐๐๐๐๐ฒ๐บ ๐ด๐ฒ๐๐ ๐๐น๐ผ๐ The rule "the database is only for I/O" is applied everywhere, so bulk updates get pulled into the application layer. So the database is barred from the very work it does best, and the system pays for it in performance. ๐ฏ. ๐ง๐ต๐ฒ ๐ฑ๐ผ๐บ๐ฎ๐ถ๐ป ๐ฐ๐ผ๐๐ฝ๐น๐ฒ๐ฑ ๐๐ผ ๐๐๐๐๐ฒ๐บ๐ ๐๐ผ๐ ๐ฑ๐ผ๐ป'๐ ๐ฐ๐ผ๐ป๐๐ฟ๐ผ๐น A third-party response โ a payment, shipping, or CRM DTO โ is passed straight into the domain instead of being translated at the boundary. So when that external system changes its response, the break doesn't stop at the edge; it ripples through the core business logic.
What you'll learn โก
How to decouple the domain from the ORM
What actually belongs in the domain โ instead of ORM as the domain; how to properly decouple from ORM entities & ORM repositories
How to design for performance
Where business logic should live โ the application layer or the database, avoid forcing business logic and using databases effectively
How to decouple from external systems
How to keep systems you don't control from leaking into your core, which goes beyond just I/O decoupling
Who this is for
โช Backend engineers using Clean Architecture โช Tech leads responsible for architecture decisions โช Teams whose systems are harder to change despite having "clean" layers **This session is for seniors. Not for beginners.**
How the session works
โช Live backend code demo in Java (applicable to any tech stack) โช Architecture decisions explained step-by-step โช Live Q&A โช Recording included
Clean Architecture: In Practice
Join our 4 hr live course: ๐ Oct 21โ22 | ๐ 3โ5PM