An e - commerce system for selling different technologicals products 👾. It represents a proof of concept example for building an application based on microservices architecture.

Catalog microservice represents;

• ASP.NET Core Web API application
• REST API principles, CRUD operations
• MongoDB database connection and containerization
• Repository Pattern Implementation
• Swagger Open API implementation

Basket microservice represents;

• ASP.NET Web API application
• REST API principles, CRUD operations
• Redis database connection and containerization
• Consume Discount gRPC Service for inter-service sync communication to calculate product final price
• Publish BasketCheckout Queue with using MassTransit and RabbitMQ

Discount microservice represents;

• ASP.NET gRPC Server application
• Build a Highly Performant inter-service gRPC Communication with Basket Microservice
• Exposing gRPC Services with creating Protobuf messages
• Using Dapper for micro-orm implementation to simplify data access and ensure high performance
• PostgreSQL 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 AutoMapper 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

API Gateway Ocelot Microservice

• Implement API Gateways with Ocelot
• Sample microservices/containers to reroute through the API Gateways
• Run multiple different API Gateway/BFF container types
• The Gateway aggregation pattern in Shopping.Aggregator

WebUI ShoppingApp Microservice

• ASP.NET Core Web Application with Bootstrap 4 and Razor template
• Call Ocelot APIs with HttpClientFactory
• ASPNET Core Razor Tools — View Components, partial Views, Tag Helpers, Model Bindings and Validations, Razor Sections etc.

Ancillary Containers

• Use Portainer for Container lightweight management UI which allows you to easily manage your different Docker environments
• pgAdmin PostgreSQL Tools feature rich Open Source administration and development platform for PostgreSQL

Docker Compose establishment with all microservices on docker;

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