This is a developer's guide; for this reason, it is highly recommended that you read this book with a computer beside you, where you can try the examples and open, compile, and test the provided projects. Besides this, it's also required that you have an Internet connection where you can download the core server and additional libraries used in the examples.

Good programming skills are required to easily understand the examples presented in this book. Most of the chapters complement the covered topics with a set of executable Maven projects. A basic understanding of Maven, Java, and JUnit is also required.