🛒 E-Commerce Backend API (Spring Boot)

A production-style e-commerce backend built using Java & Spring Boot, designed to demonstrate secure API development, scalable architecture, and real-world backend workflows.

The system supports authentication, product management, cart operations, checkout simulation, real-time notifications, and inventory management.

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Features

Authentication & Security

• JWT Authentication (Register / Login)
• Role-based access control (Admin / User)
• Secure endpoints using Spring Security

Product Management

• Product CRUD operations
• Product search functionality
• Bulk product import via Excel (.xlsx)
• Excel export for inventory management

Shopping & Orders

• Per-user shopping cart
• Add / update / remove cart items
• Checkout workflow with order creation
• Payment simulation

Real-Time Updates

• Server-Sent Events (SSE) for product notifications

Quality & DevOps

• Unit, Integration, and API testing
• Swagger/OpenAPI documentation
• Dockerized services
• CI/CD using GitHub Actions

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Admin Features

• Admin-only APIs :
• Bulk product upload via Excel
• Data validation during import
• Real-time product notification stream

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User Features

• Browse and search products
• Manage personal shopping cart
• Checkout and order creation
• Subscribe to product notification stream

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Live Demo

⚠️ The backend service is deployed, but the hosted database instance may periodically expire due to free-tier hosting limits.

You can still explore API structure via Swagger: https://ecommerce-backend-java.onrender.com/swagger-ui/index.html

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Architecture

The application follows a layered architecture:

• Controller Layer — REST endpoints
• Service Layer — Business logic
• Repository Layer — Database interaction
• Security Layer — JWT authentication & authorization

Designed for scalability and maintainability.

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Running Locally

Start Application

git clone https://github.com/adhil5108/E-commerce.git
cd E-commerce

docker-compose up --build