Book Image

Java EE 8 High Performance

By : Romain Manni-Bucau
Book Image

Java EE 8 High Performance

By: Romain Manni-Bucau

Overview of this book

The ease with which we write applications has been increasing, but with this comes the need to address their performance. A balancing act between easily implementing complex applications and keeping their performance optimal is a present-day need. In this book, we explore how to achieve this crucial balance while developing and deploying applications with Java EE 8. The book starts by analyzing various Java EE specifications to identify those potentially affecting performance adversely. Then, we move on to monitoring techniques that enable us to identify performance bottlenecks and optimize performance metrics. Next, we look at techniques that help us achieve high performance: memory optimization, concurrency, multi-threading, scaling, and caching. We also look at fault tolerance solutions and the importance of logging. Lastly, you will learn to benchmark your application and also implement solutions for continuous performance evaluation. By the end of the book, you will have gained insights into various techniques and solutions that will help create high-performance applications in the Java EE 8 environment.
Table of Contents (12 chapters)

The application server

Java EE defines specifications and, therefore, you can find several different implementations. Each major vendor has its own server but, of course, for us and Java EE, a lot of servers are fully open source. As Java EE 8 is very recent, we will use GlassFish, which is the reference implementation and is therefore the first one to be compliant with the specification (it must be released with the specification). However, there are a lot of alternatives (such as Apache TomEE, Wildfly, Payara, Liberty Profile, and so on), which will probably follow in the coming months.

GlassFish can be downloaded from its website ( We need the 5.x version to target Java EE 8, but due to its early release, a major part of this book will work with the previous versions.

If you want to integrate it with your development environment (and Maven), you can add the GlassFish repository to pom.xml, as follows:


Add the GlassFish plugin without forgetting to specify the version of the server in order to override the default one, which is now quite old:

<plugin> <!-- glassfish.version = 5.0 -->

With this setup, you can run the following command to package the application as war and deploy it in GlassFish:

$ mvn package embedded-glassfish:run

To shut down the server, type X and ENTER.