Node JS

Node JS is a free open source server framework that can run on several platforms (Windows, Linux, UNIX, Mac OS X, etc.) it is built on Google Chrome’s JavaScript Engine and is used to build fast and scalable network applications. It uses an event-driven, non-blocking I/O model, which makes it lightweight and competent.

It renders a rich library of several JavaScript modules that abridges the building of web applications to a great extent. It uses asynchronous programming and is capable of generating dynamic page content along with adding, deleting or modifying data in the database and collecting form data.

Node.js presents an event loop as a runtime constructs instead of a library. It simply enters the event loop after implementing the input script and, exists when there are no more callbacks to perform.

Why Node Js?

Below are some of the important reasons that make Node.js the first choice of software architects:-

Event-Driven and Asynchronous:

All APIs (Application Programming Interface) of Node.js library is asynchronous, which is non-blocking. It means that a node.js based server never waits for the Application Programming Interface for returning data. After calling it, the server moves to the next API and a notification mechanism of events of Node.js helps the server in getting a response from the previous API call.

Highly Scalable yet Single Threaded:

Node.js, with event looping, uses a single threaded model. The event mechanism helps the server to answer in a non-blocking way and makes the server highly scalable as opposed to traditional servers that create limited threads for handling requests. It uses a single threaded program and the same program can render service to a larger request than traditional servers such as Apache HTTP server.

Extremely Fast:

Node.js is built on Google Chrome's V8 JavaScript engine and is very fast in code implementation.

No Buffering:

The Node.js applications never buffer any kind of data. These applications just simply output the data in the chunks.


Node.js facilitates in generating dynamic page content. Using Node.js, you can develop, read, open, close, write or delete the files on the server.


Node.js facilitates in collecting form data. It can also add, modify, or delete the data in your database.


The Node.js is distributed under the MIT License.