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Comparing Node.js vs Java: Your Backend Tech Stacks Explained

  • February 21, 2022

The popularity of backend technology is beyond seamless operations in this era. The keyword of the modern-day is–fast, better, and wholesome. Hence, the backend technologies enable scalability, flexibility, and sustainability of mobile apps.


Undoubtedly, NodeJS and Java remain the top choices of backend developers. While there are heated arguments and debates worldwide regarding the comparison between NodeJS and Java, it’d be wise to say that both these backend technologies have their own set of advantages and disadvantages.

If you are building a complex web-based application or a mobile app and are perplexed about the comparison between Java and NodeJS, we’ve got you covered. Let’s have a detailed look at the NodeJS vs Java performance. This guide will give you clear and actionable insights into these powerful backend technologies.

What is NodeJS?

NodeJS is a powerful server-side runtime environment for the development of open-source codes. It is deemed a scalable and high-performance framework for syncing programs and web load for single-threaded processes.

The NodeJS framework can boost the backend capability of a web or a mobile app. It is used for the development of single-page applications, backend API services, and websites.

A Snapshot–Top Use Cases of NodeJS

In recent times, developers are constantly looking beyond the normal to improve NodeJS performance. Hence, developers are creating an application in Node.js with distinct features and functionalities. If you are wondering where to use NodeJS, below are its use cases

  • Use of NodeJS for scripting and fostering automation
  • Application of Node.js for the development of backends and servers
  • Scalable solution using Node.js for microservices
  • IoT-based applications can be developed using Node.js for mobile apps
  • Node.js for web applications
  • Complicated single-page apps can be developed using Node.js
  • Node.js for the development of streaming web applications

Read More: Top 5 best use cases for Node.js.

What are the Pros and Cons of Node.js?

Since you are looking at a clear picture for NodeJS vs Java for the backend, you should know the pros and cons of each of these technologies. This will help you find out the best backend technology for web app development project.

Let’s get to know Node.js better

Pros of Nodejs

Concurrent Request Management: NodeJS is asynchronous event-driven IO, which implies that it enables seamless and concurrent request handling abilities.

Reuse of Code: Developers can reuse a single code for both–the client as well as the server-end.

Robust Technology Stack: Node.js can offer better efficiency as well as overall productivity.

Fast Processing: Since Node.js is an event-based model and can handle concurrent requests, it processes the information faster.

Ecosystem is Rich: The rich ecosystem for Node.js apps consists of about 836,000 libraries and nearly 10,000 libraries are released every week. The availability of free tools makes NodeJS a popular language.

Scalable Backend Technology: Node.js is a lightweight technology. The architecture application of NodeJS for the development of a single app in the form of a suite of small services lay the groundwork for the scalability of the application.

JSON Support: While backend technologies such as Ruby On Rails and PHP utilize JSON format, NodeJS need not convert between the binary models.

Cons of Nodejs

Performance Bottleneck: When Node.js is required to execute a CPU-bound task, the heavy request goes to the event loop and stalls the other requests, which often results in an overall delay.

Tough to Maintain Code: Node.js is asynchronous in nature, owing to its nested callbacks. Hence, NodeJS find it tough to understand and maintain the code.

Lack of Quality: Some of the Node.js tools do not equate to the high standards of coding. These are incorrectly structured, owing to its open-source ecosystem.

Extensive Computing Leads to Failure: NodeJS is less efficient when it comes to handling heavy calculations. It doesn’t support complex applications and multi-threaded level of programming.

If you are still asking yourself, why choose Node.js for the backend? We have got you the right answer. Some of the leading apps in their niches have either been developed using Node.js or migrated to it.

Let’s check out the examples


PayPal was initially built using Java. However, it went to be powered by NodeJS, as the platform allows quick and easy transactions to users. Besides this, the backend technology offers extensive support in over 100 currencies across 200 markets. The backend technology is used for user-centric web development.


Netflix uses NodeJS for delivering a lightweight, modular, and quick application. As per data shared by Netflix, it has reduced about 70% of app load time using NodeJS.


LinkedIn is spread across 675 Mn members in over 200 countries. The professional social media platform leverages NodeJs server-side mobile app. NodeJS attributes better performance, lower memory consumption, and fast processing abilities than its previous Ruby on Rails technology.


Uber is the on-demand ride-hailing giant, operating in over 85 countries and 900 cities. Uber was the first company to adopt NodeJS for building its massive matching system. Using the backend technology, Uber was able to boos the app performance, processing of information, and operational efficiency.


What is Java?

Java is a class-based, high-level, and object-oriented programming language. It works on different platforms–Raspberry Pi, Linux, Mac, Windows, etc. Developers find it fast, secure, and powerful.

Besides this, the language has broad community support. Java is easy to learn and known for its simplicity. The Java codes can be reused, which reduces the development costs.

The ecosystem of Java includes Java Development Kit, Java Runtime Environment, and Java Virtual Machine. The robustness, cross-platform capabilities, ease of use, and security are some of the best features of Java.

There are numerous popular apps in Java. Currently, about 96,037 websites with 51,346 domains use Java. As per the StackOverflow Annual Survey report 2020, Java has been securing a position in the topmost used programming languages for eight years.

As a result, the demand among clients to hire dedicated Java developers is rising.

A Snapshot–Top Use Cases of Java

The top question is–when to use Java? You can build an app with Java, and developers use Java for web development. However, given the broad community, developers are looking to improve Java performance to come up with newer functionalities.

Below are some of the best use cases of Java

  • Java for game development
  • You can build a web app in Java.
  • Java can be used for Android app development.
  • Hire dedicated Java developers for business applications
  • The use of Java language is prevalent for banking as well as FinTech apps
  • Widespread use of Java is for test automation
  • Java is used for the development of Desktop GUI and test automation
  • Embedded systems can be built using Java besides application and web servers

What are the Pros and Cons of Java?

Java is one of the most effective coding languages in recent times. However, Java comes with its own set of pros and cons. In this section, we will demystify the advantages and disadvantages of Java:

Pros of Java

Security: Java exhibits no explicit pointer, making it a secure programming language among the other backend technologies.

Memory Allocation: In Java, there are two parts of memory division–stack and heap. Whenever a Java developer declares any variable, it is either stored in the heap or stack memory, thereby making it easy to store and retrieve information.

Multitasking: Owing to its multithreaded nature, Java can offer multitasking abilities all at once.

Platform-independent Technology: Java is a platform-independent backend technology, as it does not require any special system or software. Its only requirement is JVM on the device.

Cons of Java

Slow Performance: Java consumes a significant amount of memory and is relatively slower than C and C++.

Verbose and Complex Code: Compared to the other languages, Java has too many verbose, making it less scannable and less readable.

Paid License: In an update, Oracle announced it would be charging the Java Standard Edition 8 from 2019. For the new updates and bugs, users will need to pay by either the number of users or per processor.

Java upkeeps its status as one of the popular programming languages among the other backend technologies. Below are some of the popular apps developed using Java:


Spotify is one of the best music streaming platform applications. The company allows users to stream songs from any artists, songs, or albums. This popular app leverages a range of languages, including Java. Java helps make the development process much simpler and straightforward.


Twitter is known for its microblogging services. The social media platform is developed using Java. Twitter has leveraged Java for Android app development needs. Hence, Java offers smooth operations and usage.

Opera Mini

Opera Mini is one of the most used Java applications, owing to its quick information retrieving abilities. The application is lightweight and allows users to access the Internet faster even when the Internet connection is slow. It compresses unwanted graphics to optimize the user experience.


Which One is a Better Option-NodeJS or Java?

After getting a fair idea about the backend technologies, let’s analyze and identify the difference between them.

Determinant Node.js Java
Performance It operates extremely fast in a short time period. Java delivers high-performance capabilities to the applications.
Application Architecture NodeJS uses a single-threaded event loop system or MVP/MVC architecture. Java developers opt for the model-view-controller architecture for app development.
Installation You need the archive file on your system. You need to set the JavaFX environment to execute the JavaFX applications.
Testing NodeJS provides competent testing and debugging abilities. Java enables testing with FitNess, JMeter, Selenium, JUnit, and Apache.
Scalability NodeJS boasts scalability and efficiency. Java offers vertical scaling, horizontal scaling, single point of failure, and a single solution for all architecture needs.
Microservices Compatibility NodeJS is highly compatible with the code and service modules. Java is compatible with the microservice architecture, owing to its frameworks like Spring Boot and Annotation Syntax.
Database Support NodeJS extends its support for all the NoSQL and relational databases. Java uses MySQL, SQLite, and PostgreSQL.
Community Support Facebook, Google, and Amazon have contributed significantly to the NodeJS environment, thereby turning the NodeJS technology more credible. A broad community implies bug squashing, frequent updates, as well as innovation.
Hiring Difficulty Easy Easy

Let’s delve deeper into the comparison: Node.js vs Java


How is the Performance of NodeJS?

The event-driven approach of Node.js ensures efficient multitasking abilities, which, in turn, optimizes the performance of an application. In addition to this, NodeJS leverages the V8 Javascript engine. It operates extremely fast in a short time.

Given these two determiners, Node.js offers superior performance to the applications. The asynchronous and non-blocking inheritance that NodeJS receives builds an ideal environment for executing the small tasks without affecting the main application thread.

Read More: What makes Node.js so fast?

How is the Performance of Java

Java is written in the form of byte codes, which implies that the language offers better as well as faster performance as compared to the conventional programming languages.

The virtual machines interpret the byte-code instructions to offer efficient operations. In addition to this, Java has introduced a just-in-time compiler for delivering high-performance capabilities to the applications.

Application Architecture

How is the Application Architecture of NodeJS?

Node.js uses a single-threaded event loop system of architecture for managing numerous concurrent requests at a high-performance rate.

Besides this, the asynchronous architecture of NodeJS enables the utilization of MVP/MVC architecture pattern that smoothens the onboarding and isolation issues in the app codebase.

This ability helps Node.js to decrease the time-to-market for clients to stand up against their competitors. Besides this, the application architecture of NodeJS runs numerous concurrent requests all at once while offering high performance.

How is the Application Architecture of Java?

When using Java, developers opt for the model-view-controller architecture for the development of applications. As the model depicts objects in Java, the design pattern is similar to the internal architecture of the backend technology.

Java offers easy maintenance of code as well as a hassle-free application testing process. The development teams can assign numerous individual roles. They can operate on separate functionalities in large apps. As a result, the change in one module may not affect the other modules or application. This process helps increase the productivity of teams and improves the overall time-to-market.


What are the Prerequisites of NodeJS?

In order to work with Node.js, you need to have the archive file on your system. Developers need to download the NodeJS .msi installer and then run it. After the installation, you need to verify whether it is properly installed or not. You can launch your command prompt and write the following code

$ node -v

When the NodeJS is installed, you will see the following command

$ node -v //The command we ran – prints out the version of Node.js that is currently installed

v6.9.5 //

If you don’t see the above command, you can delete and install NodeJS again.

What are the Prerequisites of Java?

In order to install Java, developers need to set the JavaFX environment to execute the JavaFX applications. The first step is to download JDK on your system. Once the download is completed, you have to install JDK and then set a permanent path.

If you want to check whether Java is appropriately installed or not, you can follow these steps

Type: java -version in the command prompt and press enter.

You will find the following message if Java has been installed

Java version "1.4.x_xx" (or a higher version)

Java SE Runtime Environment

Java hotspot Client VM

If you find the message saying command not found, you will need to delete and install Java again on your system.


How Does NodeJS Sport Scalability?

Node.js can be used to develop highly scalable apps. The non-blocking input and output system as well as event-oriented models for handling more than one concurrent requests.

In addition to this, the event-loop mechanism of Node.js allows the server to process numerous requests. Since multiple types of services are distributed to distinguish between the different work servers, NodeJS boasts scalability and efficiency.

How Does Java Sport Scalability?

Developers find Java highly scalable, which, in turn, unlocks its superior performance for the development of enterprise applications. But it is crucial for you to implement the best practices for the addition of more computational resources like RAM and CPUs.

Java offers vertical scaling, horizontal scaling, single point of failure, and a single solution for all architecture needs.


How Efficient is Testing in NodeJS?

NodeJS provides competent testing as well as debugging abilities, which can be attributed to the rich ecosystem of NodeJS. With third-party packages.

Numerous automated testing tools and frameworks–AVA, Jasmine, Lab and Code, Mocha, and Jest help build a conducive testing ecosystem for applications. In addition to this, developers can leverage the testing libraries like Chai, Jest, and Mocha for providing a seamless and error-free user experience.

Read More: How to Build a Node.JS Error-handling System?

How Efficient is Testing in Java?

Developers can write their test cases using Java. Hence, it is possible to write flexible tests through sequencing, data-driven, and grouping features. Besides this, Java enables the ease to write parallel tests.

Java extends its support towards numerous testing frameworks as well as tools with FitNess, JMeter, Selenium, JUnit, and Apache. Java, in turn, offers compatibility and support to its popular IDEs.

Microservices Compatibility

How is the Microservices Compatibility with NodeJS?

NodeJS is deemed ideal for developing scalable apps, owing to its efficiency in managing numerous concurrent requests. Since NodeJS can take care of the smaller modules, it is highly compatible with the code and service modules.

How is the Microservices Compatibility with Java?

Developers find Java compatible with the microservice architecture, owing to the Java frameworks like Spring Boot and Annotation Syntax.

It provides convenient development of microservices and the ability to read even complex systems. Java offers model components and enhanced connectivity to the backend resources for the isolated apps as well as modules of microservices.

Database Support

How is the Database Support in NodeJS?

NodeJS extends its support for all the NoSQL and relational databases. However, it is crucial to utilize a NoSQL database such as MongoDB since it enables data storage in JSON objects. This provides better accessibility for Javascript-oriented backends such as NodeJS.

The object data-modelling library has been developed for NodeJS as well as MongoDB. Furthermore, Node.js improves productivity by boosting code readability and handling code flexibility.

How is the Database Support in Java?

Java underpins numerous databases and utilizes the standard database connectivity known as Java Database Connectivity for accessing data in applications. Some of the commonly utilized databases are MySQL, SQLite, and PostgreSQL.

In order to build simple projects, developers and programmers utilize built-in Java databases. Moreover, JDBC-enabled databases can solve the problems of relational databases.

Community Support

How is the Community Support for NodeJS?

One of the key differences between these two backend technologies is community support. NodeJS. According to stats shared by Stackoverflow, about 51.4% of professional developers leverage Node.js for frameworks, tools, and libraries.

The Tech giants–Facebook, Google, and Amazon have contributed significantly to the NodeJS environment, thereby turning the NodeJS technology more credible.

How is the Community Support for Java?

Similar to Node.js, Java enables robust community support for a series of complicated issues. A broad community implies bug squashing, frequent updates, as well as innovation.

Java holds a prominent place among the top three programming languages and has an active software developers community. Java is backed by Coderanch, StackOverflow, Java World, and Oracle–Java Forum.

Hiring Difficulty

What is the Difficulty Level for Hiring Dedicated Developers of NodeJS?

Want to hire NodeJS engineers? We will tell you the difficulty level regarding the hiring process. The NodeJS community, as discussed, is wide across the world. As a result, numerous Node.js developers are available for the project. You can share your requirements and hire Node.js coders from India with any level of expertise.

What is the Difficulty Level for Hiring Dedicated Developers of Java?

Java is easy to learn for even newbie developers. There are different types of developers available with various levels of expertise–freshers, entry-level, mid-level, and experienced. Hiring Java developers is not a difficult task. You can easily avail quality services by hiring dedicated Java programmers.

How to Choose the Right Technology?

Do we have a clear winner?


As we have seen, NodeJS and Java both have distinct features. Numerous winning apps have been developed using Java, while there are giant apps developed using NodeJS.

To say the least, NodeJS and Java can be used for different purposes.

Below are some points that can help you make the right decision about NodeJS vs Java

When Should you Choose NodeJS

You can hire NodeJS developers in the following cases

  • If you want to develop a web application for streaming content.
  • If you decide to develop a high-performing single-page app.
  • If you have to create a web application with efficient data processing abilities.
  • If you want to build a real-time and multi-user web application.
  • If you wish to develop a browser-oriented game application.

When Should you Choose Java

You can hire Java developers in the following cases

  • If you wish to develop an enterprise application.
  • If you want to build a scalable application.
  • If you have to create an eCommerce application.
  • If you are looking to develop a Big Data application.
  • If you wish to build a cryptocurrency application with high-level security features.

In case you are confused about whether to use Java or NodeJS for your project, you can share your requirements and seek expert consultation.


Frequently Asked Questions About NodeJS vs Java

Is NodeJS more Performant than Java?

While NodeJS is nearly 5X better performant than Python and Ruby, there is not a lot of difference between the performance of Java and NodeJS. However, it is crucial to know the complete idea to find out the exact performance rate.

Is NodeJS more Popular than Java?

NodeJS sports a better learning curve, offers reusability of codes, and performs exceptionally. However, it would be inappropriate to say that it is more or less popular than Java. Java has a unique set of features and use cases, which may not intersect with NodeJS. Besides, both the backend technologies have a huge community, which speaks highly of their individual popularity.

Which Technology has a Better Future–Java or NodeJS?

Developers and technology advocates of Java and NodeJS are constantly upkeeping the rate of innovation. The large communities of these backend technologies help foster new updates, which shows that both these languages are sustainable on the back of their evolution.

Giants like Netflix are shifting from Java to NodeJS. Does this mean Java is going Extinct?

The shifting or migration of any application highly depends on the core idea of a project and system requirement. While there are some top companies using NodeJS like Netflix, we have the world’s most used search engine–Google, world’s most used social media platform–Facebook, world’s most used eCommerce portal–Amazon, and world’ most used professional social media platform–LinkedIn developed in Java.

Is it Possible to Use NodeJS with Java?

Yes. The integration of Java and NodeJS is possible. One way is to utilize J2V8 to wrap NodeJS as a Java library to offer Node.js API in Java.


Ubaid Pisuwala

Co-founder of Peerbits and Entrepreneurship, Formulation of Business Strategies, Creation and Management of high-performance teams, Management of key corporate relationships.


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