What Is NodeJS and It’s Benefits for Business Applications

What Is NodeJS and It’s Benefits for Business Applications

What Is NodeJS and It’s Benefits for Business Applications

NodeJS is an open source, server-side script. JavaScript has many engines and spider monkey is the first JavaScript engine. It was developed by Netscape. Then so many engines were built. Internet explorer’s engine is chakra. After some years chrome has developed a V8 engine which runs on the top of Google’s open-source scripting engine V8. It’s very fast, lightweight and efficient.

NodeJS uses the asynchronous mode of operation, event-driven Input/output rather than using the threads for each process and it is a cross-platform JavaScript run-time environment that executes JavaScript code to run on the server.

Why NodeJS?

NodeJS uses JavaScript for creating server side applications or we can also use any other languages that can be compiled to JavaScript (like typescript). The JavaScript is written in the same way as we are using in any client-side application. But to develop applications with Node, we need to set up the node development environment.

NodeJS is the greatest tool for building real-time web applications and rest API’s. It provides cross-platform applications which run easily on any web. So you basically don’t need anything extra for running up a node application. According to a NodeJS Survey of users 43% of NodeJS programmers claim to use NodeJS for enterprise apps as it’s a light, easy, scalable and open-source language platform which makes it very easy to build apps even at the enterprise level also.

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How does NodeJS work?

While Talking about NodeJS, We can run applications everywhere not only in browsers. When JavaScript came it was only for web browser. But now we want to run JavaScript on websites, web browser, desktop, mobile application and on a server also.

To know how NodeJS works we have to know how a web server works.

While talking about web servers whenever a client requests for data (Client may be a mobile or a Web application) the server may process the data from a database, may be from another server or may be from any file system according to the client request and get back with the data set to the client.

Server

Now we know how Web servers work. Let’s know how other languages work for Web servers. Like Java, PHP etc.

Java is a programming language used for creating web applications. To run Java as a web server it uses Tomcat Server. Tomcat can handle multiple requests with its multiple threads. By Default Tomcat server provides 200 threads. Whenever a client sends a request, Tomcat server will assign a thread to it.

Tomcat Server

But for NodeJS we don’t have multiple threads as we are using JavaScript. To achieve that NodeJS uses two concepts.

1. Non-blocking I/O

2. Asynchronous

Let’s discuss about what is Non-blocking I/O

In Non-blocking I/O the single thread will assign the task to another service and it will be available for another task. Then we have to think if the service is not a thread then what it is?

NodeJS uses a library called libuv which is built for NodeJS, It provides the concept of non-blocking I/O. It is built in C language which uses the system kernel and kernel has multiple threads. In NodeJS we are not using multi thread but behind the scene libuv is implementing multiple threads.

NPM (Node Package Manager)

NodeJS is very famous for its Non-blocking I/O and its packages (NPM). As a developer when you are going to build an application you need some external libraries and dependencies. To not write the same code blocks and features millions of developers are developing packages and we can use the packages in our applications. NPM consists of these packages and we can simply install these packages into our applications.

Node Modules

Node module is a block of code which can be used again in any NodeJS component without impacting any other NodeJS component. The modules in NodeJS work independently without impacting the existence of any other functions.

According To stack overflow Developer survey

The measurement of users’ capacity for writing code in a specific framework or language is the learning curve. It explains web app developers’ fluency in tools and syntax.

If a developer is acquainted with JavaScript then it’s very easy to learn NodeJS. It is in the topmost position in the list of the most famous frameworks with a noteworthy score of 49%.

Frameworks of NodeJS

NodeJS introduces a number of frameworks. Some popular frameworks are: –

  • js – Express for Everyone
  • js – Next Generation NodeJS Framework
  • js – One Application, One Language
  • js – A Nestling of Code
  • js – Modernizes Data-Oriented MVC Framework
  • js – A Complete Framework
  • js – Secure than Ever
  • js – F for Flexible
  • js – Better Connectivity
  • js – The Dependable Framework
  • js – The Racer

Let’s Start with NodeJS

Generally Every NodeJS project needs a package.json file which describes all the packages to be included in the project with project’s name, description, and author.

To create a package.json file the command is:-

npm init # This will trigger the initialization

npm init --yes # This will trigger automatically populated initialization.

After providing this command it will ask for some detail project’s name, initial version, descriptions,  entry point (meaning the project’s main file) etc.

To install a package or module to our project

npm install <module>

The Module may contain any package needed for our project. Like

npm install express

To install the module globally

npm install <module> --save-dev # Where <module> is the name of the module you want to install

When we think of any programming Language we must think how to run Hello World!

Let’s try this:-

The entry point defined on the package.json file will create the same file inside our project. Like: – index.js

const express = require('express')

const app = express()

const port = 3000

app.get('/', (req, res) => {

res.send('Hello World!')

})

app.listen(port, () => {

console.log(`Example app listening at http://localhost:${port}`)

})

Run the app with the following command:

$ node app.js

Then, load http://localhost:3000/ in a browser to see the output.

Nodejs

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Conclusion:

NodeJS plays a vital role in developing scalable & high performing web applications. It has lot of benefits and use cases which are very much helpful in application development.

NodeJS has proved itself useful for developing applications that make use of the ability to run JavaScript both on the client as well as on the server side. NodeJS is an extremely versatile JavaScript run-time environment that executes JavaScript code outside of a browser.

At Andolasoft our developers love exploiting NodeJS regularly and that’s helps us to work with companies over the globes. We’d love to talk with you about your project plan whether it is a good fit for your next mobile development project.

Happy coding 🙂

FAQ:

1. What is NodeJS and how does it work?

NodeJS is server-side Java scripting that is based on Google’s V8 script. It is mainly for event driven and non- blocking servers

2. What are some of the features of NodeJS?

NodeJS is highly scalable and makes use of Java as its scripting language. It enables the single thread access rather than diverse and different threads.

3. What sort of applications can be built with NodeJS application?

All types of application can be develop with NodeJS

Below applications can develop with NodeJS

  • Social Media applications
  • Project management applications
  • Discussion platforms
  • Live stream video applications
  • Gaming applications
  • IoT applications and devices

4. Which database to use for NodeJS?

Database like MySQL, MongoDB can be used for NodeJS application development.

5. What are the benefits of using NodeJS?

Here are some benefits of NodeJS

  • It is really fast
  • It usually doesn’t block
  • It has a unified programming language and data type
  • Asynchronous makes it easy
  • Code sharing and reuse
  • Availability of many free tools
  • It has great concurrency
Jayadev Das
jayadev.das@andolasoft.com

Do what you do best in – that’s what I’ve always believed in and that’s what I preach. Over the past 25+ years (yup that’s my expertise ‘n’ experience in the Information Technology domain), I’ve been consulting to small, medium and large companies ‘bout Web Technologies, Mobile Future as well as on the good-and-bad of tech. Blogger, International Business Advisor, Web Technology Expert, Sales Guru, Startup Mentor, Insurance Sales Portal Expert & a Tennis Player. And top of all – a complete family man!

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