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

Managing Data Persistence with Quarkus

So far, we have developed some basic applications using in-memory structures that can be accessed through REST channels. But this is just the beginning. In real-world examples, you don't just rely on in-memory data; instead, you persist your data structure either on a relational database or somewhere else, such as in NoSQL storage. Therefore, in this chapter, we will leverage the essential skills we need in order to build applications in Quarkus that persist data into a relational database. We will also learn how to use an Object Relational Mapping (ORM) tool such as Hibernate ORM to map a database as storage and how to simplify its usage with the Hibernate ORM with Panache extension.

In this chapter, we will cover the following topics:

  • Adding an ORM layer to the customer service
  • Configuring and running an application to reach an RDBMS...