Nine pillars of great Node apps

What It Covers

Mateo Collina and Natalia Venditto present nine essential pillars for building enterprise-ready Node.js applications, covering event loop management, dependency strategies, monitoring, and production best practices.

Key Questions Answered

• •Event Loop Management: Monitor event loop utilization percentage and heap used versus heap total metrics rather than RSS memory to identify performance bottlenecks before they crash production systems.
• •Dependency Risk Mitigation: Avoid modules like the deprecated request library (still downloaded 70 million times weekly) and evaluate maintainer activity, bus factor, and long-term viability before adoption.
• •Production Environment Variables: Set NODE_ENV to production in all deployed environments including staging to ensure consistent library behavior, as many packages react differently to this specific variable.
• •LTS Version Strategy: Use Node.js Long Term Support versions in production for 18-month active support plus additional maintenance, avoiding current versions that only receive 6-7 months support.
• •Error Handling Implementation: Implement graceful shutdown patterns using modules like close-with-grace to stop accepting new connections, process in-flight requests, then exit cleanly when errors occur.