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)

Server resources

At several layers, the server provides your application with some resources. In our quote manager we have our datasource injected into the persistence unit through its JNDI name:


This datasource can also be injected anywhere else in the code:

@Resource(lookup = "java:app/jdbc/quote_manager")
private DataSource datasource;

But the server manages way more resources. Resources are important because they are provided and handled by the server but used from the application. In other words it is a way to control how the application behaves from the outside of it. It enables you to develop without having to care about the configuration and to tune it later or to adapt it depending on the environment you deploy your application to. The next table lists a subset of the most useful JavaEE...