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

Installing the operator via the OpenShift console

As a quick reminder from Chapter 3, Introducing the IBM Stock Trader Cloud-Native Application, the IBM Stock Trader application is comprised of about a dozen microservices (many of which are optional), and about the same number of prerequisite resources, such as databases and messaging systems. The composite operator guides you through providing all of the settings for each of those microservices and for configuring their connectivity to those various backend resources, as we can see here:

Figure 9.1 – Architectural diagram

As we can see, there are a lot of parts that need to be configured for everything to work. The operator guides us through providing such configuration information for each piece (though it does NOT actually install the backend resources – it just asks for the endpoint and credential details to connect to pre-existing resources, which could be running in your cluster, or accessed...