I want to make worker_threads in an express app deal with request and response object so that the main thread of the process is free to accept the next incoming request. I know clustering is a way where processes are dealing with the request. But I want to know specifically about the worker_threads if this is possible, so that even one process can accommodate even more requests and work independently with the worker_thread.
I want something like threads must work independently dealing the request and response object (definitely req and res object must not be in transferlist and only be sent a structured clone version so that req and res object is still available to the process) while the express instance is free for accepting next request and again create another worker_thread for that and as many as this operation keeps on going.
Might be multiple threads above the limit of a core supports is useless to create but I do not want to focus that condition right now.
You cannot pass request/response objects directly to worker threads as they're not serializable. check this answer
Instead, extract the necessary data from the request object and pass that to worker threads:
// In your Express route
app.post('/endpoint', (req, res) => {
const data = {
// Extract needed data
body: req.body,
params: req.params,
query: req.query
};
// Pass to worker thread
worker.postMessage(data);
// Set up message handler
worker.on('message', (result) => {
// Send the result from worker back to client
res.status(200).send(result);
});
});