MERN Stack Deployment Guide: PM2 and Nginx

Production Deployment for MERN Stack ApplicationsBuilding MERN application locally is straightforward, but deploying it to a secure production Linux server requires robust configuration. We use PM2 for process management and Nginx as a reverse proxy.---1. Process Management with PM2PM2 keeps your Node.js application running in the background and restarts the process automatically if it crashes:bashStart server in cluster modepm2 start dist/server.js -i max --name "mern-backend"Save the PM2 process list to run on system rebootpm2 savepm2 startup`---2. Nginx Reverse Proxy SetupNginx routes incoming port 80/443 traffic to your Node.js backend port (e.g., 5000), while handling SSL encryption:`nginxserver { listen 80; server_name api.devflow.co.in; location / { proxy_pass http://localhost:5000; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection 'upgrade'; proxy_set_header Host $host; proxy_cache_bypass $http_upgrade; }}This architecture separates concerns, speeds up static asset delivery, and safeguards backend APIs from direct web exposure.