Making a Content Backend API's Using Node.JS with JWT Authentication and Authorization

Overview

This is a Node.js backend API for a contact management system with user authentication functionality. The API allows users to register, log in, and manage their contacts through RESTful endpoints.

Technical Stack

Runtime: Node.js

Framework: Express.js

Database: MongoDB (connection setup included)

Authentication: JWT (JSON Web Tokens)

Environment Management: dotenv

Package Management: npm (package.json and package-lock.json)

Key Features

Authentication System

User registration and login endpoints

JWT-based authentication middleware

Protected routes for authenticated users only

Error handling for authentication failures

Contact Management

CRUD operations for contacts

All contact routes protected by authentication

API versioning (v1) for future compatibility