architecture-patterns

Clean Architecture and Hexagonal Architecture structure backend codebases by organizing code into distinct layers with strict dependency rules, separating domain logic, application use cases, and infrastructure adapters to ensure testability and maintainability for scalable systems.

Domain-Driven Design models complex business domains by establishing bounded contexts, value objects, aggregates, and domain events, ensuring clear boundaries and accurate mapping of business rules within multi-service backend architectures.

Resolve cyclic dependencies and context bleed by implementing Anti-Corruption Layers and performing dependency analysis to isolate bounded contexts, preventing cross-domain pollution and maintaining architectural integrity across backend services.

An Anti-Corruption Layer is needed in system design when integrating new microservices with legacy systems or disparate bounded contexts, translating external models to prevent domain pollution and maintain the integrity of your core architecture.

Onion Architecture is suitable for architecting new microservices as it enforces dependency inversion by organizing domain, application, and infrastructure layers, ensuring dependencies point inward toward the core domain for flexible and testable systems.

Implement a scalable backend service directory structure by organizing files into distinct domain, application, and infrastructure layers, placing entities, use cases, and adapters in their respective directories to enforce clear separation of concerns.