Node.js is an open source, cross-platform runtime environment for developing server-side and networking applications. Node.js applications are written in JavaScript, and can be run within the Node.js runtime on OS X, Microsoft Windows, and Linux.

Node.js also provides a rich library of various JavaScript modules which simplifies the development of web applications using Node.js to a great extent.

The main idea of Node.js is to use non-blocking and event-driven I / O so that they remain lightweight and efficient against real-time applications with a large amount of data running on distributed devices. In simple words Node.JS is used for specific reasons to fill particular needs.

Features of Node.js

  1. Extremely fast
  2. Open source
  3. No buffering
  4. I/O is Asynchronous and Event Driven
  5. Single threaded
  6. Highly Scalable

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