What are the Benefits of Express.JS for Back-end Development?

What are the Benefits of Express.JS for Back-end Development?

19 April, 2021 by img Rahul Panchal in JavaScript Development
What are the Benefits of Express.JS for Back-end Development?

The back-end is considered to be an application’s core part. As a result, plenty of care will be required while coding it. You will come across lots of frameworks for developing a back-end, accepting requests, and sending responses accordingly. In this article, we will talk about Express JS and its benefits for back-end development.

A back-end server happens to be the location where all the magic will take place and due to which your application works. In case the back-end isn’t adequately created or managed, the entire application will be full of complications and mistakes. Put simply, the application will not be working correctly in the long run.

At present, you will come across several back-end development frameworks on the market. It would be fantastic if we choose one of the most effective back-end servers developing programs. As mentioned earlier, we will be talking about Express JS, which is among the most effective back-end development frameworks.

The fundamental reason for choosing the most effective back-end developing program is that it will be working faster than the others. Moreover, it will likewise provide you with the best features.


What exactly is Express JS?

Express JS is an open-source and free web application framework for Node JS. We use it for designing and creating web apps easily and quickly. Web apps are those applications that can be run on a web browser. Only JavaScript is required by Express JS, which makes it very simple for the developers and the programmers to create web applications and API without any problem whatsoever.

Express JS happens to be a Node JS framework which implies that the majority of the code is already written for working with. One can use Express JS for building any kind of web application irrespective of whether it is hybrid, single page, or multipage. Being lightweight, Express JS aids in organizing web apps in an organized manner.

One needs to learn HTML and JavaScript to use Express JS effectively. Express JS happens to be a component of a JavaScript-based technology known as MEAN software stack, standing for MongoDB, ExpressJS, AngularJS, and Node.js. Being the back-end component of MEAN, Express JS helps to manage routing, HTTP requests, sessions, error handling, etc.

The Express JS JavaScript library aids the programmers in creating fast and efficient web apps. Express JS is accountable for improving the Node JS functionality. It will be imperative for you to perform lots of complicated programming for creating an effective API in case you do not make use of Express JS. Apart from providing many additional features, it has made it very simple to program in Node JS.


Must Read: Top 6 Reasons Why Choose Node.js for Web App Development in 2021


Express JS Features


1. Quicker Server-Side Development

Express JS offers many Node JS features, which are used quite commonly in the form of functions that one can use readily anywhere within the program. In this way, it is not required to code for an extended period, thus saving time in the long run.


2. Middleware

 This is a component of the program having access to client requests, databases, and other middlewares. Middleware is primarily accountable for the systematic arrangement of various Express JS functions.


3. Routing

A somewhat advanced routing mechanism is offered by Express.js development that aids in preserving the web page’s condition using their URLs.


4. Templating

Templating engines are provided by Express JS that enable the developers to create dynamic content on web pages by developing HTML templates.


5. Debugging

Debugging is essential in case you like to develop web applications successfully. Debugging is made more accessible by Express JS by offering a mechanism that can pinpoint the web app’s specific component having bugs.


Must Read: Are NodeJs Developers in Great Demand over any other Back-end Technologies?


How does Express JS Function?

Node JS happens to be the most typical event-driven server having a single thread that manages every server connection. This likewise can process every single request without any delay in the flow. Once the request enters the server, Express JS can process it into the callback directly without any blockage to the main stack. Make sure that the data is retrieved from all databases and files. This procedure can be somewhat time-consuming because of the delay in reading discs. It will also be noticed that the average server will block each request until the data is delivered.

Node JS can allow you to register on information that belongs to the callback. Your data can be processed in parallel. Now, the server will be able to accept several other data at a given time. Because of this, Node JS can process more significant requests effectively.

Mongoose is referred to as the Mongo driver add-in. It can fit with the Express ecosystem perfectly. The most typical benefit of belonging to MongoDB happens to be its JavaScript-oriented feature. Every data would be transferred by the driver, which is being used without any time-wasting. You can continue adjusting them to all programming environments. MongoDB is developed for servers that are scale-out data-driven. Similar to the callback, each request belonging to MongoDB will be processed. This implies that there is no need for your server to block the stock. This might happen until you transfer certain data. This can concurrently process several other requests. It is feasible for the scale-out database to hold on to several physically remote servers, making this process extremely critical. Therefore, retrieving data would be time-consuming for them.


Express JS Benefits for Back-End Development

 Here, we will be talking about some of the top advantages of making use of Express.JS for back-end development.


1. Scale the Application Quickly

The most notable advantage of using Express.JS for back-end development is that it would be feasible to quickly scale the application. As you might be aware, there is additional support provided by Node.JS. So, with the aid of the addition in nodes plus adding additional resources to it, it will be possible to scale your application quickly.


2. JavaScript is Not Difficult to Learn

JavaScript happens to be extremely famous and simple to learn the language. It can be easily used for development on Express.JS.


3. The Same Language can be used for Coding Front-end

One more advantage of employing Express.JS is that it will be feasible to perform the code of frontend and back-end using JavaScript. Even though you will come across several such platforms, different language support is offered by them for front-end and back-end, which makes it quite perplexing to work with. Nevertheless, no such problem will be faced by you while with Express.JS.


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4. Fewer Developer Expenses for Maintaining the App

It is not known to everybody that Express.JS happens to be a full-stack JavaScript, due to which there is no need to hire different back-end development services for managing the front-end and the back-end of a web app.


5. Google V8 Engine Supports It

The Google V8 engine supports Express.JS; using it will be possible to get better performance without any error or lag in the processing.


6. Quick Development

One reason why web frameworks are used at present is that people like to create their apps quicker. The process of development becomes easier and smoother by making use of frameworks. When you use a contemporary framework such as Express, you need to write code for every feature from scratch that you like to develop.

Express provides pre-made libraries, functions, and tools that help accelerate the process of web development. The frameworks created using this tool, including Poet, Feathers, LoopBack, and Kites, will help you accomplish lots of boring development tasks quite quickly.

Express likewise allows you to write your middleware functions to reduce the lines of code you need for writing, thus saving you effort and time. The framework similarly offers a collection of pre-built middleware functions for the quick development of apps. For building things even quicker, 3rd-party middleware functions can be used by you to easily extend the Express app functionalities.

You will come across various types of middleware, including third-party middleware, error-handling middleware, router-level middleware, inbuilt middleware, in addition to application-level middleware.

There are several process managers and template engines that you can use to make the development process much smoother.

Some well-known template engines happen to be Pug, h4e, Eta, Marko, swig, EJS, and Blade. Moreover, some of the popular process managers for Express JS are SystemD, PM2, StrongLoop Process Manager, and Forever.


7. Community Support

In case while working with Express.JS, you are facing any issue, it will be a good idea to take help from the community, which happens to be highly supportive.


8. Supports Caching

Express.js support the caching feature, and its benefit is that there is no need to re-execute the codes repeatedly. Furthermore, it will allow the web pages to load quicker.


Must Read: 4 JavaScript Frameworks You Should Consider For Your Next Web App


Express.js Pros & Cons



  • Even though many platforms cannot manage a higher level of requests, Express.JS will help you handle requests effectively by providing you with I/Q request handling support.
  • Express.JS can boast of having a highly supportive and open-source community.
  • It will be possible to integrate several third-party services and applications using Express.JS.



  • Express.js offers a middleware system which results in some client request problems.
  • You’ll come across several problems in the callbacks.



Express.js happens to be a minimal framework that provides us with all the required features for high-end development. It will likewise offer required functions with middleware. Moreover, it is user-friendly, well-documented, and also supported by the active community directly. Go for the most competent Express.JS development company on the market which provides top-notch solutions and whose rates are also quite reasonable.


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Rahul Panchal

Rahul Panchal is the Founder & Managing Director at Rlogical Techsoft Pvt. Ltd. He is a pioneer tech enthusiast who has assisted diverse enterprise solutions with a fresh perspective over the years. From integrating technologies like Full-Stack, .NET, Flutter & PHP, he has harnessed custom web or hybrid mobile app development projects. His creative outlook on the latest models of AI, ML, blockchain, and IoT, has made various businesses attain leading-edge success.

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