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


From this whirlwind tour of Reactive Programming, you should be proficient in writing reactive applications on the JVM. Your programming skills now include how to use the Vert.x core API to write asynchronous and non-blocking services. You have also learned how to combine the Observable pattern with streams or asynchronous results using the Vert.x Reactive API. Then, we quickly explored the last Vert.x paradigm, Vert.x Axle, which allows different beans to interact using asynchronous messages and enforces loose coupling. Finally, we applied a reactive API to access a relational database using the PostgreSQL client extension for Vert.x.

Although you've gotten to grips with the Reactive Programming API, note that much of its power can only be unleashed when building real-time data pipelines and streaming data. We will cover these in the next chapter.