system-error-handling-strategy

System-wide error handling classifies failures into Programmer, Validation, Domain, Transient, Resource, Poison, External contract, and Unknown categories. It prescribes per-class strategies like fail-fast, retry budgets, or circuit breaking, and enforces explicit propagation with structured details across service boundaries.

Propagate and translate errors across service boundaries by enforcing structured error details, explicit translation rules, and observability requirements. This ensures reliable detection, alerting, and tracing while maintaining traceability for fast incident response.

Apply circuit breakers, dead-letter queues, and exponential backoff budgets when handling transient dependency failures and poison data. These mechanisms ensure safe escalation and recovery by preventing cascading failures and dropping unrecoverable messages.

Classify transient dependency failures as temporary network or service issues requiring retry budgets and circuit breaking. Classify poison data as invalid payloads causing repeated failures, routing them to a dead-letter queue to prevent endless processing loops.

Yes, system-wide error handling requires idempotency to prevent duplicate side effects during retries and observability rules integrating metrics, logs, and alerts. These rules support fast incident response and reliable failure detection across services.

Retry strategies cause cascading failures without exponential backoff budgets, circuit breakers, and timeouts. Enforce these error handling patterns alongside dead-letter queues and structured error details to ensure safe escalation and recovery.