In this module, we will focus on implementing tactical DDD patterns in the Ordering domain layer. You will develop rich-domain model entities, including order-related value objects and aggregates, and explore the concept of domain events. This section will provide you with a deep understanding of DDD’s tactical patterns, ensuring a well-structured and maintainable domain layer.

In this module, we will develop the infrastructure layer for Ordering microservices using EF Core with the code-first approach. You will configure SQL Server and apply EF Core migrations, enabling seamless data storage. Additionally, we will explore EF Core interceptors for entity auditing and domain event dispatching. By the end of this section, you will have a fully functional and scalable infrastructure layer for your Ordering service.

In this module, we will dive into the Ordering.Application layer, where we will implement CQRS using MediatR for managing commands and queries. You will learn how to combine CQRS with Event Sourcing for robust state management and implement domain event handlers. By the end of this section, you will be able to handle complex business logic and data retrieval with ease using CQRS and MediatR.

In this module, we will build the Ordering.API layer by exposing Minimal REST APIs using Carter. We will implement CRUD operations for order management, including create, update, and delete functionalities. Additionally, you will apply the REPR pattern to standardize responses and handle errors efficiently. By the end of this section, your Ordering API will be ready to interact seamlessly with other services and clients.

In this module, we will explore the implementation of asynchronous communication between the Basket and Ordering microservices using RabbitMQ and MassTransit. You will learn how to use the Fan-Out Publish/Subscribe pattern to handle event-driven messaging and manage distributed transactions with the Saga pattern. This section will provide you with the tools to build scalable, resilient microservices that communicate effectively in an event-driven architecture.

In this module, we will focus on building an API Gateway using YARP, a powerful reverse proxy for routing traffic between microservices. You will learn how to apply the Gateway Routing pattern and configure YARP to forward requests efficiently. We will also cover rate limiting and exception handling to ensure a secure and optimized gateway. By the end of this section, you will have a fully functional API Gateway that streamlines access to your microservices.

In this module, we will build a Shopping Web Client application that communicates with the YARP API Gateway using Refit, an HTTP client library. You will learn how to develop a rich user interface using Razor Pages, where users can browse products, add items to their cart, and complete orders. By the end of this section, your Shopping Web application will be fully integrated with the microservices architecture, providing a seamless user experience.

In this final module, we take a moment to thank you for your dedication and participation throughout the course. This section will motivate you to continue applying the best practices you’ve acquired, ensuring your success in building scalable and efficient microservices. Best of luck as you apply these skills in your future projects!