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Iryna Deremuk
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What is Node.js Used For? 6 Practical Use Cases That Surprise

Time to read: 6 min

Node.js has become a force to be reckoned with, upending traditional approaches to development and opening up new possibilities. Its lightweight and event-driven architecture makes it ideal for processing concurrent connections and delivering real-time applications with the highest speed and reliability. From startups to established enterprises, companies across all industries have realized the benefits of implementing Node.js into their workflows.

So without further ado, let's talk about what makes this open-source server environment special and take a look at its practical use cases.

What is Node.js?

Node.js is a popular tool for building web and mobile apps with JavaScript. It's a versatile and open-source solution that works on various platforms. According to the 2022 Stack Overflow developer survey, Node.js is the most used non-language tool.

The idea behind this runtime environment was to create a way for the client and server to communicate in both directions, moving away from the traditional one-way request-response method. This was a big step forward for developers, as they can now use JavaScript on both the client and server sides.

One of the great features of Node.js is that it's lightweight and scalable. It also gives you the ability to use JavaScript for the entire stack. This runtime was released in 2009 and is based on Chrome’s V8 JavaScript engine. You can even include code written in other languages if you want. There are also a variety of libraries that support Node.js and make it even more powerful. Among the most popular are Express, Passport, Sequelize and Mongoose. These libraries extend the environment and help build efficient applications.

What is Node.js?

Key Features

Now that you have an overview of what Node.js is and why
it's gaining popularity, let's dive into its main features:

what Node.js is and why it's gaining popularity

Written in JavaScript

This cross-platform runtime environment is based on JavaScript, one of the most widely used programming languages in the world. Since many programmers are already familiar with this language and its concepts, learning the runtime environment becomes a breeze. 

Event-Driven Architecture

Node.js operates on an event-driven architecture. When an event is triggered or completed, a callback function, also known as an event handler, is executed. This allows to consume fewer server resources and use less memory. The lightweight nature of this cross-platform runtime environment enables faster application performance.

Multiple Platform Compatibility

Node.js is compatible with a wide range of systems, including Windows, macOS, Linux and mobile platforms. With the right package, it provides an autonomous environment that can be customized to meet different client needs.


Node.js handles concurrent requests, taking advantage of all available CPU cores. This scalability makes this cross-platform runtime environment a popular choice for developers. Interestingly, according to a recent statistic, 98% of Fortune 500 companies use Node.js in some form for their web applications.

Quick Data Streaming

Node.js uses the V8 JavaScript runtime environment, which is also used by Chrome. Integration with this high-performance engine significantly increases the speed of this open-source runtime environment. This allows for handling fast data streams for web applications and ensuring smooth and efficient data flow

Single-Threaded Working

In Node.js, all requests are executed in a single thread within the event loop. This approach eliminates the need for reloading and reduces the time required to switch content, resulting in more efficient resource usage.

Asynchronous Nature

This means that a server built with Node.js doesn't have to wait for data from an API. The cross-platform runtime environment also uses non-blocking I/O, which means that code can be executed without blocking other operations. These features contribute to Node.js' fast response time and provide a better user experience.

Advantages of Node.js

Why should startups choose Node.js for their web or app development projects?
Here are six compelling reasons:

Advantages of Node.js

High Performance

Node.js is great for building lightning-fast apps that deliver results in seconds. Its event-driven single-threaded design allows multitasking and efficient processing of concurrent requests without overloading system resources. Node.js quickly converts JavaScript into machine code while benefiting from continuous improvements in efficiency and security.


This cross-platform runtime environment offers easy scalability in both horizontal and vertical directions. You can expand apps by adding more nodes horizontally or allocating additional resources to individual nodes vertically.

Reduces Loading Time with Caching:

Node.js has a caching module that reduces workload and code re-execution, resulting in faster response times. By caching the output module in the app's memory, users can browse online sites quickly and without long wait times.

Improves Response Time and Boosts Performance

Node.js' non-blocking asynchronous design, with its single-threaded event loop, improves application responsiveness and performance. By efficiently handling concurrent users without creating additional threads, it optimizes resource utilization.

Large Community Support

The Node.js community consists of millions of active developers worldwide who are willing to contribute and collaborate. The NPM package manager registry provides a wealth of tools, libraries and resources, while major tech companies like Amazon, Google, Facebook and Netflix actively support and contribute to the Node.js ecosystem.


This cross-platform runtime environment eliminates the need for separate resource teams by allowing server-side and front-end JavaScript code to be developed in one language. This streamlines the software development process and saves time, money and resources.


Node.js provides extensive flexibility and can be customized to meet individual requirements. It supports JSON format data transfer and provides APIs for building various servers, including HTTP, TCP and DNS.

6 Common Node.js Use Cases

Node.js offers a seamless development process and superior performance, making it the top choice for API. Its ability to scale effortlessly and manage multiple requests makes it ideal for building streaming web applications with numerous concurrent connections. Now, let's take a look at 6 main Node.js use cases.

Node.js - seamless development process and superior performance

Real-Time Chat Apps

You've probably noticed that real-time conversations are now ubiquitous on almost every website, especially enterprise and digital products. The great news is that Node.js provides built-in capabilities for developing real-time chat applications. Using its Event API, developers can easily create server-side events and push notifications, similar to popular chat apps like Skype and Facebook Messenger.

It's a game-changer that empowers developers to create engaging and interactive chat experiences. Since over 80% of consumers expect instant responses from businesses, Node.js equips you with the tools you need to meet this expectation and enable seamless real-time communication on your website.

Microservices Architecture

In recent years, the popularity of microservices architecture has soared,
driven by tech giants like Amazon, Facebook and Netflix.

When it comes to developing this approach, Node.js is the perfect technology. It makes it easy to deploy multiple server instances for individual microservices and facilitates the creation of appropriate routing addresses for each instance. 

A survey conducted by Statista found that 81.5% of companies already use microservices and 17.5% plan to implement them within the next year. By using Node.js, companies can increase the speed of their applications while significantly reducing the overall code base. This means faster software development cycles and better performance.

Single-Page Applications (SPAs)

Single-page apps (SPAs) compress the entire program onto a single page and provide the user with a desktop-like experience.

Node.js excels at handling asynchronous calls and performing intensive I/O operations, making it a perfect fit for SPAs. This runtime environment is particularly well-suited for data-driven single-page apps, where the server acts as the back-end and passes data to the client, while the client-side handles the HTML rendering. By using Node.js, these advances will make your single-page app more maintainable and reduce development time.

Proxy Servers and Reverse Proxies

Creating a proxy server is easier with Node.js. While there are affordable third-party ones like Nginx or HAProxy, they can present complex challenges when used for large-scale websites. In such cases, This cross-platform runtime environment can serve as a server-side proxy that efficiently collects data from multiple third-party sources.

Whether you're creating a news website like BBC, a media platform like Forbes, or an entertainment site like IMDb, you need to load content from various third-party domains. Node.js is invaluable when it comes to mediating various services, even if they have different response times. When Node.js is used as a server-side proxy, it can handle numerous simultaneous connections without blocking the flow of data. This non-blocking capability ensures smooth performance, even under heavy loads.

Streaming Applications

Thanks to the native stream API and the inclusion of readable and writable streams, streams in Node.js revolutionize data processing by handling inputs and outputs sequentially and piece by piece. This approach minimizes memory consumption and eliminates the need to store temporary data, ensuring a smooth and efficient download process.

This open-source ecosystem brings significant merits when dealing with large files, as it avoids excessive consumption of storage space on devices. YouTube is a prime example of Node.js-based streaming, where videos are seamlessly composed of smaller bits of data that are continuously processed by the application.

Internet of Things (IoT)

Node.js brings several key advantages to IoT development. First, it's lightweight and efficient, making it ideal for the resource-constrained environments typically found in IoT devices. Node.js uses a non-blocking, event-driven architecture that enables asynchronous communication and real-time data processing. This capability is especially beneficial in IoT scenarios where devices need to generate massive amounts of data and communicate with each other seamlessly.

Node.js' extensive collection of modules and libraries provides developers with ready-to-use tools for various IoT needs, such as processing sensor data, interacting with hardware devices, and managing communication protocols.

Company’s that use Node JSCompany’s that use Node JS


Node.js has quickly become the go-to choice for developers and businesses looking to build modern online applications. If your web app involves tasks like intensive client-side rendering, frequent moving of data, handling multiple requests at once and similar challenges, Node.js is the perfect solution for you.

To take full advantage of this cross-platform runtime environment and improve your company's services, it's advisable to hire Node.js developers from 111 Minutes. Our expertise and knowledge will ensure that you get the most out of its features.

If you plan to craft your own WhatsApp,
don’t hesitate to contact us.

Our experienced app developers will deliver
a scalablesolution tailored to your business goals.

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