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

Mandatory microservices and external services

As mentioned earlier, the core part of the example is just that which is needed to do the basics of creating portfolios and buying/selling stock. Those parts of the example have a solid border around each box, as shown in Figure 3.3.

The following subsections will describe each of the microservices and their dependencies that are required in order to exercise the primary functionality of the IBM Stock Trader application—that is, the ability to create portfolios and buy and sell stocks within them.


Trader is the standard UI client for the example. As seen earlier in Figure 3.1, it presents a list of existing portfolios, allowing you to create new ones, update existing ones (by buying or selling stocks), and delete portfolios. It communicates, via REST service calls, with the Broker microservice, passing a JavaScript Object Notation (JSON) Web Token (JWT) for single-sign-on (SSO) purposes.

It is implemented via a...