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
1
Section 1: Getting Started with Quarkus
5
Section 2: Building Applications with Quarkus
10
Section 3: Advanced Development Tactics

Creating a Container Image of Your Application

In the previous chapter, we had a glimpse of the power of Quarkus applications by running a traditional JVM application and then turning it into a native build. There is much more to Quarkus than lean executables and low resource usage, though, so, in this chapter, we will keep learning how to create container images of our application that can then be deployed into a Kubernetes-native environment. For this purpose, our to-do list includes installing the Docker tool and the Community version of OpenShift, which is called Origin Community Distribution of Kubernetes, or simply OKD. Then, we will learn how to scale our application so that we can improve its response time even further.

In this chapter, we will cover the following topics:

  • Setting up Docker in your environment
  • Starting a Quarkus application in a container
  • Running a native...