Microservices

• In this project, an online course sales platform similar to udemy was developed with microservice architecture.

• In this project, Microservice architecture was established with .Net 5.

• Both synchronous and asynchronous communication was established between microservices.

• OAuth 2.0 and OpenID Connect protocols were used in this microservice architecture.

• The Eventual Consistency model was applied to ensure consistency in databases of microservices.

• Dockerize microservices by creating Docker Compose files.

• Various databases such as Mssql, PostgreSql and MongoDB were installed as containers.

Catalog Microservice

Our microservice that will be responsible for holding and presenting information about our courses.

• MongoDb (Database)
• One-To-Many/One-To-One relationship
• MongoDb

Basket Microservice

Our microservice that will be responsible for basket operations.

• RedisDB(Database)

Discount Microservice

Our microservice that will be responsible for the discount coupons that will be defined to the user.

• PostgreSQL(Database)

Order Microservice

Our microservice responsible for order processing. Domain Driven Design approach was used in this microservice. MediatR library was used to implement the CQRS design pattern in this microservice.

• Sql Server(Database)
• Domain Driven Design
• CQRS (MediatR Library)

FakePayment Microservice

Our microservice responsible for payment processing.

IdentityServer Microservice

Our microservice responsible for keeping user data, generating tokens and refreshtokens.

• Sql Server(Database)

PhotoStock Microservice

Our microservice responsible for keeping and presenting course photos.

API Gateway

• Ocelot Library

Message Broker

• RabbitMQ was used as the message queue system.
• MassTransit library was used to communicate with RabbitMQ.
• RabbitMQ (MassTransit Library)

Identity Server

• Generating Token / RefreshToken
• Protecting our microservices with Access Token
• Building a structure in accordance with OAuth 2.0 / OpenID Connect protocols

Asp.Net Core MVC Microservice

The data she received from microservices was shown to the user and our UI microservice that will be responsible for interacting with the user.

• Note: This project was carried out using the following course.
• https://www.udemy.com/course/net-ile-microservices/