Quarkus in Action

Build resilient and scalable, cloud-native enterprise Java applications using the Quarkus framework.

Quarkus lets you live-reload your Java code, deliver continuous background testing, and automatically provide database instances—plus tons more productivity-boosting features! Quarkus in Action quickly gets you up to speed with Quarkus by building a real-world business application.

In Quarkus in Action, you will:

• Use Quarkus Dev mode to speed up and enhance Java development
• Understand how to use the Dev UI to observe and troubleshoot running applications
• Automatic background testing using the Continuous Testing feature
• New frameworks and libraries such as Quarkus Messaging, gRPC, and GraphQL
• Simplify deployment of applications into Kubernetes and OpenShift
• Automatic management of remote services such as databases and message brokers via Docker containers
• Set up observability for applications by using metrics, health checks and distributed tracing

Quarkus in Action is written by Martin Štefanko and Jan Martiška, Red Hat engineers who are both active contributors to the Quarkus project. In it, you'll learn how Quarkus works and how you can integrate it into your stack for more productive Java development. Discover what makes Quarkus different from classic enterprise Java frameworks, how Quarkus streamlines creating cloud-native applications, and makes deployment easy.

Foreword by Markus Eisele.

About the technology

Choose a Java framework that's as modern as your applications! Quarkus is a cloud-first framework designed for speed and cost optimization. It's Kubernetes-aware by default and includes amazing productivity features like live reloading, continuous testing, and a developer-friendly UI that lets you code fluidly without tedious setup.

About the book

Quarkus in Action provides a carefully designed learning path through Quarkus' key features and use cases. You'll learn hands-on by implementing a working car rental application with a cloud-native microservices design that includes Kubernetes, SQL and NoSQL databases, messaging, and observability. Along the way, you'll learn how Quarkus simplifies deployment on cloud platforms like OpenShift.

What's inside

• Speed up development with Quarkus Dev mode
• Troubleshoot running apps with Dev UI
• Continuous testing in the background
• Automatic startup of development databases

About the reader

For intermediate Java developers who have experience deve- loping server-side Java applications.

About the author

Martin Štefanko and Jan Martiška are Red Hat engineers and active contributors to the Quarkus project.

Table of Contents

Part 1
1 What is Quarkus?
2 Your first Quarkus application
3 Enhancing developer productivity with Quarkus
Part 2
4 Handling communications
5 Testing Quarkus applications
6 Exposing and securing web applications
7 Database access
8 Reactive programming
9 Quarkus messaging
Part 3
10 Cloud-native application patterns
11 Quarkus applications in the cloud
12 Custom Quarkus extensions
A Alternative languages and build tooling
B Tools installations
C Alternatives for developing frontend applications with Quarkus