Gateway pattern for external service calls
18 days ago
- #Dependency Management
- #Go
- #Software Architecture
- Separate external dependencies from business-domain logic for better maintainability and testability.
- Use the Gateway pattern to decouple business logic from external service communication.
- High-level modules should depend on abstractions, not low-level details, adhering to the Dependency Inversion Principle.
- In Go, consumers should define interfaces they need, not the providers, to avoid unnecessary coupling.
- Define small, focused interfaces in the consumer package to reflect specific use cases.
- Use mock implementations in tests to verify interactions with external services without actual calls.
- Wire dependencies together in a main package, passing real implementations in production and mocks in tests.
- Prefer the term 'gateway' over 'client' to clearly distinguish the pattern from other types of clients.