Using Node 11.7 Worker Threads With RxJS Observable

With the release of Node 11.7, the worker_threads module becomes a standard feature and is no longer hidden behind the –experimental-worker switch. The worker_threads module allows developers to run JavaScript asynchronously in light-weight, isolated threads contained within the main Node process. This article will be focusing on how use worker threads to execute a task asynchronously and stream data from that task back to the rest of your Node application using RxJS Observables.
Before we get started, if you want to learn more about worker threads and why you might want to use them, I would recommend reading Node.js multithreading: What are Worker Threads and why do they matter? by Alberto Gimeno. Alberto has done a fantastic job explaining the purpose of the worker_thread module, provided some solid examples of where it makes sense to use it, as well as demonstrated some alternate ways to build a multi-threaded Node app.

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