error-handling-strategy

Global exception handling for microservices is designed by creating a unified exception hierarchy, mapping exceptions to standardized response formats, and applying global interceptors to prevent internal error leakage. This yields consistent client-facing error semantics across all services.

Error codes for backend APIs are structured through semantic, module-scoped error code registries with strict naming rules. This approach ensures consistent internal and external error semantics, producing a clear registry ready for implementation.

Retry strategies and circuit breaker thresholds are configured by specifying exponential backoff policies, failure thresholds, and fallback behaviors. This produces concrete resilience parameters that make system recovery predictable and prevent cascading failures.

Exception hierarchies and error code specs are generated per business module, such as an orders module. This produces a detailed spec listing sample classes, module-scoped error codes, and interception mappings ready for immediate implementation.

Fallback behaviors and idempotency are used in error handling when designing resilience strategies for boundary conditions and message systems. They ensure predictable recovery and safe retry operations, often incorporating dead letter queue handling.

Classifying business, validation, and system exceptions is supported by defining clear inheritance patterns for stacks like Java or TypeScript. This creates a structured exception hierarchy that standardizes failure classification across the application.