Using worker_threads for Parallel Processing

Node.js 12 introduced the worker_threads module, allowing for parallel execution of JavaScript.

javascriptCopy code// worker.js
const { parentPort } = require('worker_threads');

parentPort.on('message', (data) => {
// Perform some computation
parentPort.postMessage(data * 2);
});

// main.js
const { Worker } = require('worker_threads');

function runWorker(data) {
return new Promise((resolve, reject) => {
    const worker = new Worker('./worker.js');
    worker.on('message', resolve);
    worker.on('error', reject);
    worker.postMessage(data);
});
}

async function main() {
try {
    const result = await runWorker(5);
    console.log('Worker result:', result);
} catch (err) {
    console.error('Worker error:', err);
}
}

main();

Explanation:

• worker_threads allows you to create parallel threads for computation.
• Use postMessage to communicate between the main thread and worker threads.