What is MERN Stack? Working | Components | Benefits

MERN is a known technical stack mostly for a javascript developer and it’s in trends these days.

This blog is intended to provide a general understanding of the MERN stack.

MERN allows the development of full-stack web applications. The MERN stack may be used to create a complete web application with a database, including the frontend, backend, and business logic.

The MERN stack is used to build web applications from the ground up. MongoDB, Express, React, and Nodejs is all part of the MERN stack. Each of these four technologies offers developers an end-to-end solution to make the process of developing an application go more smoothly and easily.

MERN stack is one of the MEAN stack’s many variations. This stack is commonly used to create single-page applications. It refers to a web application that interacts with the user in real-time by simply rendering the current page with the desired information.

The MERN stack includes a database, as well as server and client-side frameworks.

Let’s have a closer look at the components of the MERN stack.

MongoDB- document oriented database

Express (.js)- web application framework of Node.js

React (.js)- Javascript library for client

Node (.js)- Javascript web server

MongoDB Database Tier in MERN Stack

MongoDB is a NoSQL database in which each record is a document made up of key-value pairs that look like JSON objects. The database tier of the MERN stack is MongoDB. MongoDB is mostly used in the development process to store data. One of the most critical pillars in the MERN stack is MongoDB. MongoDB enables developers to directly access data from front-end code.

Why MongoDB?

• It is document-oriented, which means it will index documents more quickly.
• The scalability is done as large amounts of data can be handled by distributing them among multiple machines.
• JSON objects are used, which are simple to use and have a wide range of browser compatibility.
• MongoDB has a very simple environment setup.
• Use of JavaScript.

Express (.js) Server Tier in MERN Stack

As part of the MERN stack, ExpressJS is the middleware that lies between React and Node. Express ensures that the features you’re currently used to don’t get lost in the shuffle of new ones. Express makes writing the back-end code much simpler and easier. Many middlewares are supported by Express, making code shorter and easier to develop.

Why Express(.js)?

• Efficient, quick, and scalable
• Has the largest Node community.
• With its built-in router, js Express encourages code reuse.
• API with lots of features.
• Single-threaded and non-simultaneous.

A complete tutorial on how MERN Stack.

React (.js) Front End in MERN Stack

Facebook created React in 2011, and it was previously known as Reactjs or React.js. React is the most widely used open-source JavaScript framework for creating Web user interfaces today. We can also make reusable UI components with React. This makes it simple to create high-performance dynamic web applications.

Why React (.js)?

• High Performance
• Use of JSX
• Use of Components and Virtual DOM
• High-performance frameworks
• With react.js you can easily develop Android/Ios Apps

Node (.js) Server Tier in MERN Stack

The original developer of Node.js is Ryan Dahl. Node.js is an open-source, cross-platform server-side runtime framework based on JavaScript. Unlike JavaScript, Node is a server-side language. Nodejs-based applications are extremely scalable. Nodejs can create dynamic content for websites, collect data from forms, and add, delete, or modify the database you’re utilizing in your project.

Why Node (.js)?

• JavaScript Runtime Environment is a free and open-source project
• Extremely scalable
• Single threading
• Node.js is a fast code execution framework based on Google Chrome’s JavaScript Engine
• Data Streaming

Benefits of MERN Stack

The MERN stack’s key benefit for developers is that every line of code is written in JavaScript. This is a universal programming language that may be used for both client-side and server-side code. There is no need to switch contexts because the language is the same across all layers. Developers can use the MERN stack to create very efficient web applications.

This is all about the MERN stack. We hope you have a clearer vision on the topic after reading this blog.