API E-commerce System with Microservices

Overview:

This e-commerce platform is designed with a microservice architecture to ensure scalability, flexibility, and maintainability. Each service focuses on a specific domain, including user authentication, product management, shopping cart, orders, coupons, and rewards. Services communicate asynchronously using RabbitMQ or Azure Service Bus. Ocelot serves as the API Gateway for routing, and Stripe handles secure payment processing. The system is built using ASP.NET Core and SQL Server for data storage, with integration for rewarding users post-purchase.

Front end Repository

The Front end repo can be found at: https://github.com/anhdo1896/ecommerce-reactjs

Technology Stack

• Backend Framework: ASP.NET Core
• Message Queue: RabbitMQ, Azure Service Bus (for message-driven communication)
• API Gateway: Ocelot
• Payment Gateway: Stripe (for payment processing)
• Database: SQL Server

Microservice Structure & Database Design

Each microservice will have its own SQL Server database to ensure that each domain is separated for better scalability and maintainability.

• AuthAPI: Stores user accounts, roles, and tokens.
• ProductAPI: Stores product, category, and brand data.
• CouponAPI: Stores coupon codes and discount information.
• CartAPI: Stores user-specific cart data.
• OrderAPI: Tracks orders, payments, and statuses.
• RewardAPI: Tracks rewards and user-specific points or discounts.

1. AuthAPI

Responsibilities:

• User authentication and role management.
• JWT token generation for secure API access.

Key Components:

• Controllers: Handle login, registration, and role assignment.
• Identity Framework: For managing user roles and secure password hashing.

2. ProductAPI

Responsibilities: Manage products, categories, brands, and product photos.

3. CouponAPI

Responsibilities:

• Manage discount coupons that users can apply to orders.

4. CartAPI

Responsibilities:

• Manage shopping carts for users, allowing them to add, update, and remove items.

5. OrderAPI

Responsibilities:

• Handle the creation of orders and manage payments via Stripe.

6. RewardAPI

Responsibilities:

• Reward users for successful purchases by giving them points or discounts.

7. EmailAPI

Responsibilities:

• Send email notifications to users for account actions, order confirmations, and reward updates.

Key Components:

Controllers: Queue and send emails for various events. RabbitMQ or Azure Service Bus: For asynchronous email processing.

8. Message Bus

Responsibilities:

• Facilitate communication between services through RabbitMQ or Azure Service Bus.
• Ensure services are decoupled and operate asynchronously.

9. API Gateway (Ocelot)

Responsibilities:

• Serve as the entry point for all API requests and route them to the appropriate microservice.
• Secure all routes using JWT tokens.

Deployment

Live Demo: Demo