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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
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The module we will work with today is called Worker Pool. Created by Jos de Jong, Worker Pool offers an easy way to create a pool of workers for both dynamically offloading computations as well as managing a pool of dedicated workers. It's basically a thread-pool manager for Node JS, supporting Worker Threads, Child Processes and Web Workers for browser-based implementations.
At this point, you have 2 options: Use your own NodeJS app (and install workerpool and bcryptjs modules), or download the source code from GitHub for this tutorial and my NodeJS Performance Optimization video series.
There is a layer of Node that's already multithreaded and that is the libuv thread-pool. I/O tasks such as files and folder management, TCP/UDP transactions, compression and encryption are handed off to libuv, and if not asynchronous by nature, get handled in the libuv's thread-pool.
Finally, our 1-app.js holds the code that will be executed on launch of our App. First we initialize the variables in the .env file. We then setup an Express server and create a route called /bcrypt. When this route is triggered, we will check to see if the Worker Pool is enabled. If yes, we get a handle on the Worker Pool proxy and execute the bcryptHash function that we declared in the thread-functions.js file. This will in turn execute the bcryptHash function in Utilities and return us the result. If the Worker Pool is disabled, we simply execute the bcryptHash function directly in Utilities.