Child Process Example

child_process_example.js

// parent.js
const cp = require('child_process');

const CHILD_PATH = `${__dirname}/child.js`;
const queue = [1, 2, 3, 4, 5];

queue.forEach((num) => {
  const child = cp.fork(CHILD_PATH);

  child.on('message', (msg) => console.log(msg));
  child.send(num);
});

// child.js
process.on('message', (num) => {
  process.send(num + 1);
});