Node.js Internals: Read This Before Your Next Backend Interview

I was reading the Node.js official documentation to understand how Node.js actually works internally. But honestly some parts felt a bit hard to me So i thought why not to rewrite what i learn in simple words that will help you as well. So in this blog we will cover the following topics. Topics to Cover What is Node.js V8 Engine and libuv Node.js Architecture Overview How Node.js Executes a Program (node index.js) Thread Pool in Node.js Event Loop and Its Phases Understanding Event Loop with Examples Worker Thread Conclusion Don't worry this blog will cover each and every topic from the Node.js official documentation. What is Node.js Originally JavaScript is meant to be run on the browser like Google chrome but in 2009 a developer name Ryan Dahl had a different idea. He extract the Google V8 engine from the browser an combined it with a powerful library called libuv . Using C++ and JavaScript he build a runtime that could execute JavaScript outside the browser. Later Node.js was create