Global Error Handling

Centralized error handling consolidates exception management in a single location—typically middleware or a global handler—that catches errors from controllers, services, and API boundaries, logs them securely, and returns consistent user-friendly messages instead of exposing internal stack traces.

Implement graceful degradation by catching external API failures in try-catch blocks, differentiating transient errors from permanent ones, applying retry strategies with exponential backoff for recoverable failures, and returning fallback responses or partial functionality to users.

Use typed exceptions with centralized handlers that validate inputs fail-fast, apply structured logging with sensitive data redaction, and ensure all code paths—including finally blocks for resource cleanup—have explicit error handling to prevent crashes and data exposure.

Custom exception types let you differentiate between error categories (validation, authentication, external service timeouts), enabling targeted handling strategies—retry logic for transient failures, immediate user feedback for validation errors—and clearer code intent across controllers and services.

Yes; map internal exceptions to user-friendly messages in your centralized error handler, stripping technical details like stack traces and internal system names while logging full context server-side for debugging and stability monitoring.