Book Image

Practical Cloud-Native Java Development with MicroProfile

By : Emily Jiang, Andrew McCright, John Alcorn, David Chan, Alasdair Nottingham
Book Image

Practical Cloud-Native Java Development with MicroProfile

By: Emily Jiang, Andrew McCright, John Alcorn, David Chan, Alasdair Nottingham

Overview of this book

In this cloud-native era, most applications are deployed in a cloud environment that is public, private, or a combination of both. To ensure that your application performs well in the cloud, you need to build an application that is cloud native. MicroProfile is one of the most popular frameworks for building cloud-native applications, and fits well with Kubernetes. As an open standard technology, MicroProfile helps improve application portability across all of MicroProfile's implementations. Practical Cloud-Native Java Development with MicroProfile is a comprehensive guide that helps you explore the advanced features and use cases of a variety of Jakarta and MicroProfile specifications. You'll start by learning how to develop a real-world stock trader application, and then move on to enhancing the application and adding day-2 operation considerations. You'll gradually advance to packaging and deploying the application. The book demonstrates the complete process of development through to deployment and concludes by showing you how to monitor the application's performance in the cloud. By the end of this book, you will master MicroProfile's latest features and be able to build fast and efficient cloud-native applications.
Table of Contents (18 chapters)
Section 1: Cloud-Native Applications
Section 2: MicroProfile 4.1 Deep Dive
Section 3: End-to-End Project Using MicroProfile
Section 4: MicroProfile Standalone Specifications and the Future

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...