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

**GraphQL** is a query language that lets us describe the data we want to receive from the API. It gives the client the ability to ask for exactly what they need.

It was developed by Meta (formerly known as Facebook) in 2012 to help with performance in the Facebook application.

At its core, GraphQL relies heavily on two simple keywords: query and mutation. A **query** is a representation of what the client is expecting in terms of data. A **mutation**, on the other hand, is a request that will alter the data.

# Adding the dependency

Quarkus offers support for GraphQL through the `quarkus-smallrye-graphql` dependency that can be easily added to an existing project via one of the following commands:

Learn how to create a GraphQL endpoint and its advantages.

Introduction to Quarkus

Quarkus Basics

Quarkus Web

Quarkus Data

Epilogue

Appendix

GraphQL

Introduction