What security middleware should I add to a Node.js server?
helmet for security headers, cors for cross-origin control, and express-rate-limit for rate limiting. These are essential for production security to protect against common web vulnerabilities and abuse.
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More FAQs in Node.js Server Best Practices for Production
Use environment variables for configuration, a process manager like PM2 for restarts and clustering, security middleware like helmet and rate limiting, a global error handler, non-blocking async APIs, structured logging with winston or pino, and compression.
To handle automatic restarts, clustering across CPU cores, and monitoring. Running node app.js directly in production means an unhandled crash takes down your app with no recovery. PM2 or systemd manages this for you.
Because console.log is fine for development but not for production monitoring. Structured logging with winston or pino lets you search and filter logs, which is essential for debugging production issues.
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