Node JS #nodejsinterviewquestions #nodejstutorial #nodejs #job #

Node JS #nodejsinterviewquestions #nodejstutorial #nodejs #job #

🚀 How Do You Handle Logging in a Production Node.js Application? Effective logging in production helps monitor, debug, and track issues — without cluttering the console. 🛠️ 🔥 Best Practices for Logging: ✅ 1. Use a Logging Library – Popular ones include Winston, Pino, and Bunyan. They support log levels (info, warn, error), formatting, and transports (e.g., file, console, cloud). ✅ 2. Structure Logs Properly – Log in JSON format for easier parsing and querying later. ✅ 3. Log Levels for Clarity – Define severity levels (debug, info, warn, error, etc.) to control what gets logged. ✅ 4. Write Logs to Files or Databases – Avoid console logs in production. Store logs in files or logging services like Loggly, Papertrail, or Elastic Stack (ELK). ✅ 5. Handle Errors Gracefully – Ensure unhandled errors and exceptions are logged. process.on('uncaughtException') and unhandledRejection can catch these. ✅ 6. Rotate & Archive Logs – Prevent bloated log files by rotating logs with logrotate or Winston’s DailyRotateFile plugin. ✅ 7. Monitor & Alert – Set up alerts for critical errors using Sentry, Datadog, or Prometheus. 💡 Production logging isn’t just about tracking errors — it’s key to performance monitoring, debugging, and ensuring uptime! 🎉 #NodeJS #Logging #Backend 🚀 #ProductionReady #WinstonJS #Pino #ExpressJS #ErrorHandling #Monitoring #DevOps #JavaScript #DeveloperLife 💻✨