Node.js Error Handling Patterns

Proper error handling prevents crashes and improves debugging. Here's how to handle errors effectively.

Error Types#

Custom Error Classes#

Synchronous Error Handling#

Async Error Handling#

Express Error Handling#

Global Error Handlers#

Error Logging#

Error Recovery#

Validation Errors#

Best Practices#

Conclusion#

Effective error handling requires custom error classes, proper async handling, and comprehensive logging. Use global handlers for uncaught errors, implement retry and circuit breaker patterns for resilience, and always log with sufficient context for debugging.