service-patterns

The ServiceResult pattern is a result wrapper that indicates success or failure and error type. It standardizes backend error handling by returning structured responses from services instead of throwing exceptions for expected business logic failures.

Structure .NET backend services by encapsulating all business rules in service implementations rather than controllers. Always define an interface for each service and register them in the dependency injection container to ensure clean separation of concerns.

Semantic logging uses named parameters and appropriate log levels to provide structured context. It records service operations predictably, improving maintainability and testability across backend data access and controller interactions.

Yes, you can use dependency injection for mapping. Register mapping services in your DI container alongside other services to map domain models to responses, ensuring predictable behavior and clean composition within your .NET backend.

Unexpected exceptions should bubble to a global handler in backend service design. Letting them propagate avoids masking critical failures, while expected business logic failures return structured ServiceResult wrappers for predictable application behavior.

The best way to separate concerns is using interface-based service patterns. Services orchestrate operations between controllers and data access, containing all business logic, while controllers handle request mapping and response formatting.