Chapter 10: Reactive Cloud-Native Applications

Up until now, we have mainly talked about traditional cloud-native applications that adopt imperative programming with clearly defined input and output. Imperative programming is the oldest programming paradigm. Applications using this paradigm are built using a clearly defined sequence of instructions making it easier to understand. Its architecture requires that the connection services are predefined.

However, sometimes, a cloud-native application does not know which services it should call. Its purpose might be just sending or receiving messages or events and staying responsive and reactive. Thus, imperative programming no longer applies to these kinds of applications. Under such circumstances, you will need to rely on reactive programing and use an event-driven architecture to achieve reactive, responsive, and message-driven applications. We will discuss reactive cloud-native applications in this chapter.

First, you will learn...