Graceful Shutdown in Node.js Express 🚀

💎 When running an Express server, shutting it down gracefully ensures that ongoing requests complete and resources like database connections are properly cleaned up before the app exits.
💎 A graceful shutdown ensures that ongoing requests finish before the app exits.

Code Example

const express = require("express");

const app = express();
const PORT = 3000;

const server = app.listen(PORT, () => {
  console.log(`Server running on port ${PORT}`);
});

const shutdown = () => {
  console.log("\nShutting down...");
  server.close(() => {
    console.log("Server closed. Cleanup complete.");
    process.exit(0);
  });
};

process.on("SIGINT", shutdown);
process.on("SIGTERM", shutdown);

🌟 Key Takeaways

✅ Listen for SIGINT/ SIGTERM signal 🚨 to trigger shutdown
✅ Ensures active requests complete 👍 before exiting
✅ Calls server.close() to stop the server and release the port

This ensures a smooth exit without dropping connections abruptly! 🚀✨

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