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


In this chapter, we looked at the different paths we can take to add web content to our Quarkus applications. First, we learned how to create a CRUD in-memory application to manage a set of Java objects. The example application was then accessed by a JavaScript layer (AngularJS) with some peculiar APIs to handle REST calls. We also looked at some configuration parameters that are needed when we want to enable CORS in Quarkus projects. Next, we added a WebSocket layer to introduce full-duplex communication between the initial project and the client frontend.

By completing this chapter, you now know how to use the embedded Vert.x and Undertow server to leverage REST APIs (quarkus-resteasy) and WebSocket/Servlet APIs (quarkus-undertow-websockets).

In the next chapter, we will add database storage for our application using the Hibernate ORM and Hibernate Panache extensions...