Event Foundations
In the first part of this book, we discussed what event-driven architectures are and the other patterns we might use when developing them. We then dove into the design and planning of an application, and we’ll be implementing event-based approaches to the existing synchronous methods it uses now. This next part will introduce you to event usage, tracking, and forms of communication, and will also refactor the MallBots application into a fully event-driven application. Each chapter will cover a different pattern and accompanying implementation, which will build on what was learned in the previous chapters.
In this chapter, we will take a look at how the application is being built and how the modules of the application communicate. After a tour of the application, we will refactor portions of the application to use domain events, a domain-driven design pattern, to set the stage for our future refactoring efforts.
We will work with the following main topics...
