cluster: Worker based implementation?

[ronag]

Would it make sense/be possible to re-implement/create alternative implementation for cluster that is based on Workers instead of child processes? Would make it possible to more efficiently pass data between the parent process and workers.

[ljluestc]

const { Worker, isMainThread, parentPort, workerData } = require('worker_threads');
const http = require('http');

if (isMainThread) {
  // This is the main thread (master process).
  const numWorkers = 4;
  const workers = [];

  // Create worker threads.
  for (let i = 0; i < numWorkers; i++) {
    const worker = new Worker(__filename, { workerData: { workerId: i } });
    workers.push(worker);
  }

  // Create a simple HTTP server to distribute requests.
  const server = http.createServer((req, res) => {
    // Distribute incoming HTTP requests among workers.
    const worker = workers[Math.floor(Math.random() * numWorkers)];
    worker.postMessage(req.url);
  });

  server.listen(3000, () => {
    console.log('Server is running on port 3000');
  });
} else {
  // This is a worker thread.
  const workerId = workerData.workerId;

  parentPort.on('message', (url) => {
    // Handle the request in the worker thread.
    console.log(`Worker ${workerId} processing request for URL: ${url}`);

    // Simulate some work (e.g., processing the request).
    setTimeout(() => {
      console.log(`Worker ${workerId} finished processing request for URL: ${url}`);
      parentPort.postMessage(`Response from Worker ${workerId} for URL: ${url}`);
    }, 1000);
  });
}