Answer:
- Use pm2 save after starting processes and use pm2 startup for auto-restart on reboot.
- Watch memory leaks — restart processes before limits reached.
- Use pm2-runtime instead of plain pm2 in Docker containers to keep process in the foreground.
- Avoid excessive customization — let PM2 handle environment variables and ecosystem files.
- Be cautious with environment differences — PM2 may alter runtime behavior, so test thoroughly.
- Monitor logs, health metrics, and handle unhandled exceptions within your app so PM2 doesn’t constantly crash-restart.
