m13-domain-error

Domain error handling improves software reliability by classifying errors by audience and recovery needs, designing structured error vocabularies across service boundaries, and defining recovery pathways like retry policies and fallbacks.

You classify domain errors by separating them into user-facing versus internal categories, and transient versus permanent types, which directly determines the appropriate recovery strategy, tracing path, and alerting behavior across layers.

Designing retry policies and fallbacks requires mapping them to your error categorizations, applying recovery strategies like circuit breakers and retry with backoff specifically to transient errors to maintain system robustness.

Tracing domain errors across service boundaries requires establishing a structured error vocabulary that propagates context up and down layer boundaries, linking business rules to specific error categories and their recovery pathways.

Circuit breakers should be used when defining recovery strategies for transient errors crossing service boundaries, preventing cascading failures by blocking repeated calls to failing downstream services and maintaining overall system robustness.

Yes, you outline a domain error strategy for a new feature by classifying potential errors and proposing recovery paths, which involves designing an error hierarchy and defining alerting and fallback behaviors.