Gain insights into Quarkus, a modern Java framework. Learn about creating and configuring applications, REST endpoints, WebSockets, GraphQL, fault tolerance, and database connections for robust microservices.

quarkus.tar.gz

Quarkus run dev application

Quarkus test application

Quarkus run dev application + MongoDB

Quarkus run dev application + PostgreSQL

Quarkus is a modern Java framework that simplifies the creation of web applications. With the help of Quarkus, you can create modern applications and deploy them easily on the cloud.

You’ll begin the course with an introduction to Quarkus and the different features that make it a great Java framework. Next, you’ll explore the basics of Quarkus, such as creating and configuring an application, adding plugins, and testing your code. You’ll learn how to build modern web applications using Quarkus by creating and consuming REST endpoints and documenting them. You’ll also learn how to create a WebSocket server and a GraphQL endpoint and ensure fault tolerance for your application. Lastly,  you’ll add different kinds of database connections to your Quarkus application.

After completing this course, you’ll be equipped to create various applications and microservices using Quarkus, a must-have knowledge for any developer.

Developing Microservices with Quarkus

Quarkus offers many options when building our application. It comes with developer tools and different Docker files, so the build process is relatively easy with Quarkus.

One of the advantages of using Quarkus is the possibility to build native images. However, sometimes, we need the JVM for building purposes, such as running analysis tools. That’s why Quarkus offers both options.

# Building JVM Image

Quarkus offers the possibility to build JVM images and to directly package them in a Docker image.

## Packaging to runnable jar

Building a Quarkus application in JVM mode is done with a one-line command. Depending on our choice of build tool, we can run the following commands:

* **Using CLI:** `quarkus build`.
* **Using Maven:** `./mvnw install`.
* **Using Gradle:** `./gradlew build`.

After running one of the above commands, we’ll end up with several generated files under the `/target` folder. We can find the runnable jar file under `target/quarkus-app/quarkus-run.jar`, and it can easily be run with the command: `java -jar target/quarkus-app/quarkus-run.jar`.

Introduction to Quarkus

Quarkus Basics

Quarkus Web

Quarkus Data

Epilogue

Appendix

Building an Application

Building JVM Image

Packaging to runnable jar