error-handling

To implement a circuit breaker for external API calls, structure your error handling to classify recoverable failures and halt requests when thresholds are met. This prevents cascading failures across distributed services by tripping the breaker during sustained outages.

The best way to add retry with exponential backoff is to classify API errors as recoverable or unrecoverable first. Apply retry logic only to recoverable failures, ensuring transient errors are resolved without overwhelming the external service with immediate repeated requests.

Structured error classification improves application resilience by explicitly defining recoverable versus unrecoverable error types. This distinction allows your application to automatically retry safe failures while immediately escalating permanent issues, preventing brittle crashes and cascading system failures.

Cascading service failures happen because standard error logging lacks active resilience patterns. Without a circuit breaker to stop requests to failing dependencies or proper error aggregation, initial errors propagate downstream and cause widespread system instability.

Yes, you can apply this error-handling approach to both synchronous and asynchronous contexts. The strategies support proper resource cleanup, context-rich logging, and resilience patterns like circuit breakers across all execution models for comprehensive reliability.

You should not use a retry pattern for unrecoverable errors or non-transient failures. If an error is classified as permanent, retrying the operation wastes resources and delays necessary fallback procedures or alerting without resolving the underlying issue.