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  • Writer's pictureKajal Sharma

Why NodeJS is the best choice for the Backend?

Updated: Oct 5, 2022

Nowadays, the use of backend technology goes beyond simple processes. Modernity is all about being quick, better, and wholesome. As a result, mobile apps' scalability, adaptability, and sustainability are enabled by backend technologies.

Without a question, NodeJS and Java continue to be the leading languages for backend developers. Both of these backend technologies have their own set of benefits and drawbacks, despite the fact that there are passionate fights and debates about them all over the world.

If you're confused about the differences between Java and NodeJS and are creating a sophisticated online application or mobile application, we've got you covered. Let's examine the performance of NodeJS and Java in more depth. You will learn about these potent backend technologies in this guide in a straightforward and practical manner.

What is Node.JS?

An open-source runtime environment called NodeJS allows you to develop server-side code. For single-threaded applications, it is a high-performance and scalable framework.

It is used for developing single-page apps, backend API services, and websites. NodeJS can enhance the backend capability of a web or mobile app.

What Does Node.js Do?

Building solutions that require a constant server-browser connection typically uses Node.js. The following are some of its most frequent uses:

Applications, resources, and chats in real-time

Building real-time apps of any complexity are possible with Node.js. Developers of (Nodejs) JavaScript use it to create server-side code, carry out server-side operations, and integrate push notifications.


SPAs, or single-page applications, are widely created using Node.js. The technique enables software developers to serve static files along with dynamic content.

Microservices architecture for Node.js

This technology enables the creation of a service-oriented Node js architecture by software developers. They can create fast applications using a variety of distinct APIs with Node js.

IoT applications

The fact that Node js uses little server-side memory and resources is one of its benefits. Software professionals employ it as a result to enable concurrency connections between various devices in the Internet of Things.

Why choose Node.JS?

Now you must be wondering why you should choose NodeJS for your next project. Well, a lot of reasons are there for this. To better understand the concept, let’s discuss the benefits of Nodejs as a backend technology.

Node.js provides Simple Scalability

The ease with which Node.js allows programmers to scale applications both horizontally and vertically is one of its key advantages. By adding further nodes to the current system, the applications can be scaled horizontally.

Additionally, Node.js gives you the choice to add additional resources to individual nodes while vertically growing the application. As a result, it offers better options than other JavaScript servers and is very scalable.

Simple to Learn

Since JavaScript is among the most widely used programming languages, the majority of front-end developers are proficient in it.

They discover that starting to use Node.js on the backend is significantly easier. Working with Node.js takes less time and is easier to learn.

Node.js is utilized as a single programming language.

Thanks to Node.js, programmers have the option of creating server-side JavaScript applications. Because of this, Node.js developers may use a runtime environment to write JavaScript code for both the front-end and the back-end of a web application.

Additionally, they are not required to employ any additional server-side programming languages. Because practically all web browsers support JavaScript, it also facilitates the deployment of online apps.

Advantages of Full stack JS

Since Node.js is a full-stack JavaScript language, it is often used for both client-side and server-side applications.

The benefit is that you can save money by not having to engage separate backend and front-end developers. Your important time and money are saved.

Reputable for Providing High Performance

As was previously noted, Node.js uses Google's V8 JavaScript engine to interpret the JavaScript code. JavaScript code is compiled directly into the machine code, making implementation easier and faster. JavaScript code is compiled directly into the machine code, making implementation easier and faster.

By supporting non-blocking I/O operations, the runtime environment also enhances the speed of code execution.

Large and Active Community Support

Because of the sizeable and active developer community it has, Node.js has been able to advance and improve over time.

In fact, the JavaScript programmers who offer ready-made and simple solutions and scripts on GitHub are a great help to the developer communities. Future developers are anticipated to be initiated by the developers in large numbers.

The Benefits of Caching

The Node.js open-source runtime environment offers the capability of caching individual modules as well. The first component is cached in the application memory and is made available upon request.

Because caching makes it possible for programs to load web pages more quickly and reply to users more quickly, developers don't need to execute their codes again.

Offers the Freedom to Develop Apps

The freedom to create applications and software is another benefit that Node.js provides to developers.

This is a crucial feature that Ruby on Rails still lacks when it comes to imposing rules. When creating applications, you can start from scratch.

Highly Extensible: Node.js

Because Node.js is well renowned for being highly expandable, users can alter and further enhance it to suit their needs.

JSON can also be used to define the parameters for data flow between a web server and a client. Additionally, it has built-in APIs that make it easier to create HTTP, TCP, DNS, and other types of servers.

Drawbacks of Node.js

Unstable API

One of the node.js main flaws is the APIs' unpredictability. Because Node.js lacks reliable APIs, developers have difficulty building apps that require such APIs.

Since the APIs are constantly changing, users of node.js have highlighted this as a serious problem that requires attention even when moving from one version to another.

Lacks a reliable infrastructure for library support.

Another significant flaw with Node.js is that it doesn't have a reliable library support system. Therefore, in order to help them with tasks that are not handled by the core node.js library, developers must rely on third-party libraries.

Furthermore, new users find it difficult to access essential data that can be used in development because there isn't a solid documentation system.

Asynchronous Programming Model

In comparison to the synchronous programming model, Node.js Asynchronous Programming Model makes code maintenance difficult.

It is easy to understand and follow the synchronous programming model, in which all processes are executed one after another in order.

Using "callbacks" in asynchronous models makes it difficult for developers to handle situations such as race conditions. Therefore, an important disadvantage of node.js is its asynchronous programming model.

CPU-bound tasks are less efficient

Node.js is a runtime environment for the JS programming language, which means that while it can process CPU-intensive operations, it can't always handle specific jobs more effectively than the existing tools and frameworks.

This is due to the fact that Node.js was initially intended to operate on a single thread, allowing it to handle a single request at a time. The current implementations have a tendency to queue up additional requests, which on average lowers performance.


Node.js is the first preference of most big companies like Netflix, Twitter, Uber, and many others like these. It would not be a bad decision to give it a try.

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