const cluster = require('cluster'); const http = require('http'); const numCPUs = require('os').cpus().length; if (cluster.isMaster) { console.log(`Master ${process.pid} is running`); // Fork workers for (let i = 0; i < numCPUs; i++) { cluster.fork(); } cluster.on('exit', (worker, code, signal) => { console.log(`worker ${worker.process.pid} died`); }); } else { // Workers can share any TCP connection // In this case it is an HTTP server http.createServer((req, res) => { res.writeHead(200); res.end('Hello World'); }).listen(8000); console.log(`Worker ${process.pid} started`); }
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