Summary

This chapter provided an overview of the sample transit application, including the underlying business drivers, architectures, and implementation patterns. We have taken a quick lap around the domain model along with aggregates, entities, and value objects. Additionally, we have covered some key areas within the application's architecture, along with some specific implementation details, including new features in .NET 7 that will make development and debugging easier for us. All of these core topics will be covered in more detail in the coming chapters.

The next chapter takes a look into the producer-consumer pattern, which is an essential underpinning of the application and what helps event-driven systems work at scale. We will be looking at the underlying usage of this design pattern, how it benefits applications that operate at scale, how it is implemented, and how to validate that communications are properly being routed and sent.