Book Image

Hands-On Cloud-Native Applications with Java and Quarkus

By : Francesco Marchioni
Book Image

Hands-On Cloud-Native Applications with Java and Quarkus

By: Francesco Marchioni

Overview of this book

Quarkus is a new Kubernetes-native framework that allows Java developers to combine the power of containers, microservices, and cloud-native to build reliable applications. The book is a development guide that will teach you how to build Java-native applications using Quarkus and GraalVM. We start by learning about the basic concepts of a cloud-native application and its advantages over standard enterprise applications. Then we will quickly move on to application development, by installing the tooling required to build our first application on Quarkus. Next, we’ll learn how to create a container-native image of our application and execute it in a Platform-as-a-Service environment such as Minishift. Later, we will build a complete real-world application that will use REST and the Contexts and Dependency injection stack with a web frontend. We will also learn how to add database persistence to our application using PostgreSQL. We will learn how to work with various APIs available to?Quarkus?such as Camel, Eclipse MicroProfile, and Spring DI. Towards the end, we will learn advanced development techniques such as securing applications, application configuration, and working with non-blocking programming models using Vert.x. By the end of this book, you will be proficient with all the components of Quarkus and develop-blazing fast applications leveraging modern technology infrastructure.
Table of Contents (15 chapters)
Free Chapter
Section 1: Getting Started with Quarkus
Section 2: Building Applications with Quarkus
Section 3: Advanced Development Tactics

Deploying Quarkus applications on a Kubernetes-native platform

Now that we have verified how simple it is to run Quarkus applications in a container, we will deploy our application into a Kubernetes-native environment. Even if Kubernetes itself is sufficient to orchestrate your services, you can greatly extend its capabilities by installing OpenShift. Besides leveraging Kubernetes features, OpenShift also provides the following:

  • Better management of container images through the use of image streams, which decouple the actual image from your application
  • Advanced CI/CD capabilities to make the whole CI/CD workflow a lot easier, also including a Jenkins certified image
  • A simpler build process as it's easier to build a docker image inside OpenShift through the BuildConfig component, which can perform automated image builds and push them to its internal registry
  • A wealth of certified...