MERN Stack

Overview

MERN is a popular JavaScript stack for building dynamic web applications. It consists of four key technologies:

• MongoDB – NoSQL database for storing application data.
• Express.js – Lightweight backend framework for handling HTTP requests and APIs.
• React.js – Frontend library for building interactive UI components.
• Node.js – JavaScript runtime for executing server-side logic.

Key Features

• Full-stack JavaScript development (same language for frontend and backend).
• High performance and scalability with Node.js and MongoDB.
• React provides a fast and interactive user experience.
• RESTful APIs or GraphQL for seamless data communication.

Architecture

1. Frontend (React.js)
   • Component-based UI for easy maintenance.
   • State management with Redux, Context API, or React Query.
2. Backend (Node.js + Express.js)
   • Handles API requests, authentication, and business logic.
   • Middleware support for logging, authentication, and validation.
3. Database (MongoDB)
   • NoSQL schema-less structure for flexibility.
   • Uses Mongoose ORM for data modeling.

Use Cases

• Single Page Applications (SPAs)
• Social Media Platforms
• E-commerce Websites
• Real-time Chat Applications