# Deployment to Production

## PM2 Process Manager

```bash
npm install -g pm2

pm2 start app.js

pm2 start app.js -i max

pm2 list
pm2 logs
pm2 monit
pm2 restart app
pm2 stop app

pm2 startup
pm2 save
```

## Nginx Reverse Proxy

```nginx
server {
    listen 80;
    server_name example.com;
    
    location / {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }
}
```

```bash
sudo ln -s /etc/nginx/sites-available/myapp /etc/nginx/sites-enabled/
sudo nginx -t
sudo systemctl restart nginx
```

## SSL with Let's Encrypt

```bash
sudo apt install certbot python3-certbot-nginx

sudo certbot --nginx -d example.com

sudo certbot renew --dry-run
```

## Graceful Shutdown

```javascript
const server = app.listen(3000);

process.on('SIGTERM', () => {
  console.log('SIGTERM received, closing server...');
  
  server.close(() => {
    mongoose.connection.close(false, () => {
      process.exit(0);
    });
  });
});
```

## Key Takeaway

Use PM2 for process management. Nginx as reverse proxy. Enable SSL with Let's Encrypt. Implement graceful shutdown. Monitor logs and errors.

Deploy Node.js apps to production. Learn PM2, Nginx, and SSL.

Deployment with PM2 and Nginx

Learn Node.js, NodeJS, and Node JS from basics to advanced concepts including async programming, APIs, and backend development.

Deployment with PM2 and Nginx

Deployment to Production

PM2 Process Manager

Nginx Reverse Proxy

SSL with Let's Encrypt

Graceful Shutdown

Key Takeaway

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