my-backend-architecture

Backend architecture layers using domain-driven design separate code into app, domain, infrastructure, and shared layers. This enforces one-way dependencies and defines public API boundaries to prevent cross-layer leaks while isolating domain rules and persistence implementations.

The best way to enforce one-way dependencies in layered backend architecture is by applying dependency inversion direction and explicit public API boundaries. This restricts cross-layer references and ensures infrastructure implementations depend on domain rules, not vice versa.

Prevent cross-layer leaks in clean architecture by defining explicit public API surfaces and enforcing one-way dependency references. Progressive disclosure of architecture rules ensures domain rules and persistence implementations stay isolated within their prescribed layer boundaries.

Yes, the four-layer backend model supports existing middle layers. It applies core app, domain, infrastructure, and shared layers with optional middle layers, enabling progressive disclosure of architecture rules without forcing a rigid structure on existing domain boundaries.

Domain rules and repository implementations live in the domain layer, while persistence and infrastructure implementations reside in the infrastructure layer. This separation enforces dependency inversion, keeping domain logic isolated from infrastructure concerns across bounded contexts.