What is process management and why is PM2 useful?

Process management means keeping your app running reliably, restarting it if it crashes, and

managing multiple instances.

PM2 is a popular Node.js process manager that:

• Restarts apps on crashes or code changes
• Manages clustering (multi-core usage)
• Offers logs and monitoring dashboards
• Supports zero-downtime reloads

Run your app with PM2 like this:

pm2 start app.js

pm2 monit