nodejs-patterns

Unhandled promise rejections and uncaught exceptions in a Node.js backend are managed by logging them globally and implementing centralized Express error middleware that catches route-level errors and returns consistent JSON responses.

The best way to structure async control flow in Express is using async/await with Promise.all for parallel data fetching, which improves throughput while keeping the control flow readable and preventing fragile concurrency issues.

Graceful shutdown and health checks for a Node.js production server are implemented through operational hardening practices that monitor service stability, close connections safely during failures, and integrate structured logging.

Yes, this Node.js backend pattern requires modular design with single-responsibility modules and dependency injection to eliminate inconsistent error handling and ensure your Express service degrades gracefully under load.

A Node.js service fails under load when missing operational hardening practices like centralized error boundaries, structured logging, and graceful shutdown, even if async await syntax is technically correct.