In-Memory Authentication API

This is a lightweight authentication API built using Node.js and Express. It supports user sign-up, sign-in, and profile retrieval with an in-memory storage approach.

Features

• Sign Up: Register new users.
• Sign In: Authenticate existing users and receive a JWT token.
• Profile Management: Fetch user information using a valid token.
• In-Memory Storage: No database required; all data is stored in-memory for simplicity.

Live Demo

• API Base URL: https://tridibs-in-memory-authentication-api.onrender.com

Frontend

• Live Application: https://tridibs-in-memory-authentication.netlify.app
• Frontend Repository: GitHub Repo

Installation

1. Clone the repository:

   git clone https://github.com/Tridib11/Authentication-api.git

2. Navigate to the project folder:

   cd Authentication-api

3. Install dependencies:

   npm install

4. Start the server:

   node index.js

   The server will run on http://localhost:3000.

API Endpoints

1. GET /

• Description: Check if the server is running.
• Response:

  {
    "msg": "Server is running"
  }

2. POST /signup

• Description: Register a new user.
• Request Body:

  {
    "username": "your_username",
    "password": "your_password"
  }

• Response:

  {
    "msg": "You are signed in successfully"
  }

• Error:

  {
    "msg": "User already exists"
  }

3. POST /signin

• Description: Log in a user and receive a JWT token.
• Request Body:

  {
    "username": "your_username",
    "password": "your_password"
  }

• Response:

  {
    "token": "your_jwt_token"
  }

• Error:

  {
    "msg": "Sorry user does not exist!"
  }

4. GET /me

• Description: Fetch user information. Requires a valid JWT token.
• Headers:

  {
    "token": "your_jwt_token"
  }

• Response:

  {
    "username": "your_username",
    "password": "your_password"
  }

• Error:

  {
    "msg": "User not found"
  }

Middleware

• auth: Verifies the JWT token.
• logger: Logs the incoming request method.

Tech Stack

• Backend: Node.js, Express
• Authentication: JWT (JSON Web Tokens)
• CORS: Enabled for cross-origin requests
• Frontend: Deployed on Netlify

How It Works

1. Sign Up to create a new account.
2. Sign In to receive a JWT token.
3. Use the token to access the Profile Information endpoint.

Project Structure

.
├── index.js         # Main server file
├── package.json     # Project dependencies
└── README.md        # Documentation

License

This project is licensed under the MIT License. Feel free to use and modify it as needed.

Author

Tridib
GitHub