What is a MERN stack and why should you use it?

3 min readAug 4, 2022

What is MERN Stack?

A set of technologies known as the MERN stack make it possible to construct applications more quickly. The MERN Stack is made up of Node.js, MongoDB, Express, and React. MERN stack is an open-source full-stack JavaScript solution enabling the quicker and simpler deployment of full-stack applications.

The MERN Stack Components

MongoDB:

MongoDB is a document database that uses a JSON-based query language and flexible documents to store data. You don’t need to modify your application to add additional fields because it includes dynamic schemas. The scalability and flexibility of the MongoDB framework are its best-known features.

MongoDB features include:

Environment scalability built in.
It supports flexible aggregating tools like MapReduce.
It enables a quick-to-create flexible document model.
As MongoDB uses common hardware, costs are greatly reduced.
One server can run MongoDB on several others.

ExpressJS:

A NodeJS framework called ExpressJS makes it easier to write backend code. You can save making additional Node modules because of that and helps in maintaining the code’s accuracy. It assists us in tying our front end (ReactJS) and database to our backend.

Features of ExpressJs:

Single-threaded and asynchronous.
It is quick and flexible.
Robust API

ReactJS:

A JS library called ReactJS enables the creation of user interfaces for mobile apps and SPAs. It enables you to create UI components and code JavaScript. Both mobile and desktop applications can be created with it because it manages the view layer.

Features of React:

Supports one-way data binding, which means that all data moves through the application in one direction.
It helps developers work more quickly and improves the user experience.
A component-based framework is ReactJS. To make it simple to transfer all of the data through the application, the code is written in templates.

NodeJS:

Users can run code on the server using NodeJS, an open-source JavaScript runtime environment. Node’s use of the Chrome JavaScript Engine makes it possible for faster code execution. Instead of using its own module system based on CommonJS to combine multiple JavaScript files, Node.js works without an enclosed HTML page.

Features of Nodejs:

Node.js applications never buffer any data.
A single-threaded model with event looping is used by Node.js.
With Node.js, robust server-side applications may be created.
It is very scalable.

What is MERN Stack?

The MERN stack is a great option for businesses looking to create top-notch online apps. A very seamless development process is guaranteed by the MERN stack. Since the MERN stack is open-sourced and supported by a large developer community, you can easily find many amazing libraries, no-cost npm packages.

The advantages of the MERN stack

A very smooth development process is provided by the MERN stack.
Even a lot of testing tools are already included within the MERN stack.
Using the MERN stack, one may create sophisticated applications such as e-commerce websites, video calling applications, social media websites, etc.
Strong community support is available for MERN stack.

Conclusion

I hope this article has clarified any misunderstandings concerning the MERN stack and its advantages. The preferred framework for creating mobile and web applications is MERN stack. Writing web application scripts is considerably easier with this combination of strong individual technologies than with other frameworks. Modularity is a very adaptive feature because it allows you to develop unique solutions based on your needs.