How do I set up a Node.js cluster?

How do I set up a Node.js cluster?

To set up a Node.js cluster, you can use the built-in 'cluster' module. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

const cluster = require('cluster');
const http = require('http');
const numCPUs = require('os').cpus().length;

if (cluster.isMaster) {
  for (let i = 0; i < numCPUs; i++) {
    cluster.fork();
  }
  cluster.on('exit', (worker, code, signal) => {
    console.log(`Worker ${worker.process.pid} died`);
  });
} else {
  http.createServer((req, res) => {
    res.writeHead(200);
    res.end('Hello World!');
  }).listen(8000);
}

What does this code do?

This code creates a simple HTTP server that runs on multiple CPU cores, improving performance by handling more requests concurrently.