This is to prove Node.js multi-threading capabilities. You can see that Node.js run 10 threads per each HTTP thread and they are not blocking each others.

npm install

npm start

Server will start listening on 8080 port

You can test in the browser, or with multi-thread URL request tool like Siege. For example,

siege -c 3 -v https://localhost:8080

It works. Need to take care about long time operations. Probably need to return processing Id and refresh its status via API, then show the results of processing.