error-handling

To implement consistent error handling, define named exceptions for failure categories like not found or validation failure, then map them to HTTP status codes in a global exception handler. This centralizes error semantics and ensures uniform API responses across backend services.

Inconsistent HTTP responses occur when generic exceptions are mixed with business failures. Using domain-specific exceptions for each failure category and a global exception handler standardizes the translation of domain failures into consistent HTTP status codes and error payloads.

The best way to map domain exceptions to HTTP responses is using a global exception handler. This central controller advice intercepts domain-specific exceptions thrown at the point of failure and translates them into appropriate HTTP status codes and structured error payloads.

Yes, a global exception handler can manage validation and external service failures. By creating named exception classes for each failure category, the handler centralizes HTTP mapping and translates these distinct domain failures into clear API errors with appropriate status codes.

Domain-specific exceptions should be thrown at the exact point of failure in service code with descriptive business messages. Logging should occur at the boundary only, ensuring exceptions accurately model domain failures before the global handler translates them to HTTP responses.