result-pattern

The Result type pattern is a monadic error handling approach that standardizes how errors are represented and propagated internally. It defines explicit success and failure states for service functions, ensuring predictable failure management across microservices.

To return a validation error from a service function, use the Result pattern's factory methods to categorize the failure by severity level. This creates a clear service contract that propagates the error state to the API boundary for graceful client feedback.

Use monadic error handling in API design when you need unified error categorization and clear service contracts across internal service communication. It replaces unpredictable exceptions with explicit success and failure states, ensuring reliable backend service failures are managed gracefully.

Yes, the Result pattern integrates with API boundaries by translating internal error categorizations and severity levels into appropriate client responses. This integration allows microservices to maintain unified error handling while providing clear feedback to external clients.

Categorize error severity levels by using the factory methods provided by the Result pattern. These methods standardize internal service communication by defining explicit failure states, allowing backend services to differentiate and propagate errors consistently across the ecosystem.

The Result type requires consistent adoption across services to maintain unified error handling. If internal service communication bypasses the pattern's explicit success and failure states, the clear service contracts degrade, potentially causing unpredictable API boundary behavior.