Created
November 9, 2017 17:20
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Node.js cluster
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| 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\n'); | |
| }).listen(8000); | |
| console.log(`Worker ${process.pid} started`); | |
| } |
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