There is a couple of microservices which implemented e-commerce modules over Catalog, Basket, Discount and Ordering microservices with NoSQL (DocumentDb, Redis) and Relational databases (PostgreSQL, Sql Server) with communicating over RabbitMQ Event Driven Communication and using Yarp API Gateway.

Whats Including In This Repository

Catalog microservice which includes;

• ASP.NET Core Minimal APIs and latest features of .NET8 and C# 12
• Vertical Slice Architecture implementation with Feature folders and single .cs file includes different classes in one file
• CQRS implementation using MediatR library
• CQRS Validation Pipeline Behaviors with MediatR and FluentValidation
• Use Marten library for .NET Transactional Document DB on PostgreSQL
• Use Carter for Minimal API endpoint definition
• Cross-cutting concerns Logging, Global Exception Handling and Health Checks

Basket microservice which includes;

• ASP.NET 8 Web API application, Following REST API principles, CRUD
• Using Redis as a Distributed Cache over basketdb
• Implements Proxy, Decorator and Cache-aside patterns
• Consume Discount Grpc Service for inter-service sync communication to calculate product final price
• Publish BasketCheckout Queue with using MassTransit and RabbitMQ

Discount microservice which includes;

• ASP.NET Grpc Server application
• Build a Highly Performant inter-service gRPC Communication with Basket Microservice
• Exposing Grpc Services with creating Protobuf messages
• Entity Framework Core ORM — SQLite Data Provider and Migrations to simplify data access and ensure high performance
• SQLite database connection and containerization

Microservices Communication

• Sync inter-service gRPC Communication
• Async Microservices Communication with RabbitMQ Message-Broker Service
• Using RabbitMQ Publish/Subscribe Topic Exchange Model
• Using MassTransit for abstraction over RabbitMQ Message-Broker system
• Publishing BasketCheckout event queue from Basket microservices and Subscribing this event from Ordering microservices
• Create RabbitMQ EventBus.Messages library and add references Microservices

Ordering Microservice

• Implementing DDD, CQRS, and Clean Architecture with using Best Practices
• Developing CQRS with using MediatR, FluentValidation and Mapster packages
• Consuming RabbitMQ BasketCheckout event queue with using MassTransit-RabbitMQ Configuration
• SqlServer database connection and containerization
• Using Entity Framework Core ORM and auto migrate to SqlServer when application startup

Yarp API Gateway Microservice

• Develop API Gateways with Yarp Reverse Proxy applying Gateway Routing Pattern
• Yarp Reverse Proxy Configuration; Route, Cluster, Path, Transform, Destinations
• Rate Limiting with FixedWindowLimiter on Yarp Reverse Proxy Configuration

Docker Compose establishment with all microservices on docker;

• Containerization of microservices
• Containerization of databases
• Override Environment variables

Run The Project

You will need the following tools:

• .Net Core 8 or later
• Docker Desktop

Installing

Follow these steps to get your development environment set up: (Before Run Start the Docker Desktop)

1. Clone the repository
2. At the root directory of solution, run below command:

docker-compose up -d

3. Wait for docker compose all microservices. That’s it! (some microservices need extra time to work so please wait if not worked in first shut)