error-handling

Centralized Express error handling middleware catches and processes all application errors uniformly. You implement this middleware to format standardized API error responses, preventing application crashes and ensuring consistent client feedback across validation failures and unauthorized access.

Backend retry logic handles external service errors by automatically re-executing failed operations. This Skill provides strategies to implement these retry patterns, ensuring your application maintains robustness when interacting with unreliable external dependencies or network requests.

Standardized API error responses format validation failures and resource not found errors consistently. By defining custom error classes and using middleware, you return clear, uniform error messages with appropriate HTTP status codes, improving debuggability and providing helpful client feedback.

Graceful shutdown ensures backend services shut down cleanly by releasing resources and terminating active connections properly. You need this during production deployments or failures to prevent data loss and ensure system robustness when applications stop receiving traffic.

Yes, you can integrate Zod input validation with custom error classes for API request handling. This combination allows you to categorize validation failures accurately and route them through standardized error handling middleware for consistent API responses.

Unhandled promise rejections crash Node.js backends when errors bypass centralized middleware. Implementing custom error classes and Express error handling middleware catches these failures, ensuring a standardized error response is returned instead of terminating the application process.