Benefits and Features of Node JS and Steps for installing Node JS

1. Benefits and Features of Node JS and Steps for installing Node JS Node. js (Node) is an open-source development platform for executing server-side JavaScript code. Most of the people are confused and understand that it is a programming framework or language. We often use Node.js to create back-end services like APIs like Web App or Mobile App. It is used in production by large companies such as Paypal, Uber, Netflix, Wallmart, etc. Features of Node JS: The following are the features of Node JS 1.It's easy to get started and can be used for prototyping and agile development 2.It provides fast and highly scalable services 3.It uses JavaScript everywhere, so it's easy for a JavaScript programmer to create core services using Node.js 4.Cleaner and more consistent source code. 5.Large ecosystem for open source library. 6.It has an asynchronous or non-blocking nature. Advantages of NodeJS: Here are the benefits of using Node.js 1.Easy Scalability: Developers prefer to use Node.js because it easily scales the application horizontally and vertically. We can also add additional resources during the scalability of the application. 2.Real time web apps: If you are creating a web application, you can also use PHP and it will take the same time when using Node.js, but if I am talking about creating chat or game applications, Node.js is much more preferable because of more fast synchronization. In addition, the event loop avoids HTTP overload for the development of Node.js. 3.Fast Suite:NodeJs runs on V8 engine developed by Google. The event loop in NodeJs handles all asynchronous operations, so NodeJs acts as a quick sequence and all operations can be performed quickly such as reading or writing to the database, network connection or file system 4.Easy to learn and code: We can easily learn and code NodeJs because it uses JavaScript. If you are a front-end developer and have a good command of JavaScript, you can easily learn and create the application on NodeJS 5.Advantage of Caching: It provides caching of a single module. Whenever there is a request for the first module, it is cached in the application memory, so you don't need to rerun the code. 6.Data Streaming: In NodeJs, HTTP requests and responses are treated as two separate events. These are data streams, so when you process a file at the time of loading, it will reduce the overall time and make it faster when the data is presented as transmissions. It also lets you stream audio and video files at lightning speed. 7.Hosting: PaaS (Platform as a Service) and Heroku are the hosting platforms for deploying NodeJS applications which is easy to use without any problems. 8.Corporate Support: Most well-known companies like Wallmart, Paypal, Microsoft, yahoo use NodeJS to create the applications. NodeJS uses JavaScript, so most companies combine front-end and back-end teams into one unit.

2. Application of NodeJS: NodeJS should be preferred to build •Chats in real-time •Complex single-page applications •Real-time collaboration tools •Streaming applications •JSON API based application Using Website: 1. After installing the node, you can check the version of your node in the command prompt using the command ~ $node –version 2. After that, you can just create a folder and add a file here, for example app.js. To execute this file, you must execute the command first app $node app.js 3. There are built-in modules that you can use to build your applications. Some of the popular modules are OS, fs, events, HTTP, URL, then you can include these modules in your file using these lines var fs = require('fs'); Here is an example of how to include an HTTP module to build the server. var http = require('http'); // Create a server object: http.createServer(function (req, res) { // Write a response to the client res.write('GeeksForGeeks'); // End the response res.end(); // The server object listens on port 8080 }).listen(8080); This will listen to the server on port 8080. Once you run your file at the command prompt, it will run your file and listen to the server on that port. You can also create your own module and include it in your file. Using NPM: NPM is a Node Package Manager which provides packages to download and use. It contains all the files and modules you need in your application. To install any package, you must run the command npm install For more information on Node JS Click Here