Arquitectura Hexagonal (Backend)

Hexagonal architecture decouples business logic by structuring applications into domain, application, and infrastructure layers. This ports and adapters pattern isolates core logic from frameworks and databases, ensuring your backend services remain maintainable and testable.

The ports and adapters pattern organizes backend applications into distinct layers, isolating core business logic from external technologies. It facilitates easy swapping of databases and APIs, making it ideal for complex enterprise applications and long-term microservices.

Structure a NestJS microservice using domain-driven design by organizing code into domain, application, and infrastructure layers. This ensures core logic for tasks like user creation is independent of your chosen database technology, such as PostgreSQL with TypeORM.

Hexagonal architecture improves unit testing by isolating business logic from infrastructure concerns. This enables unit testing of core domain rules without requiring complex infrastructure mocks for databases or external APIs.

Use hexagonal architecture instead of traditional structures for complex enterprise applications and long-term microservice development. It solves tightly coupled architectures by allowing easy swapping of external technologies while protecting core business logic.

Yes, domain-centric design facilitates easy swapping of external technologies like databases. By isolating core business logic using the ports and adapters pattern, you can change infrastructure components without altering your application's domain layer.