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 last and very important criteria to ensure control over the performance and to ensure that the performance is bounded (your application doesn't start being very slow) is related to timeouts.

An application has timeouts everywhere even if you don't always see them:

  • The HTTP connector, or any network connector in general, has timeouts to force the release of clients connected for too long.
  • Databases generally have timeouts as well. It can be a client-side (network) timeout or a server-side setting. For instance, MySQL will cut any connection that lasts for more than 8 hours by default.
  • Thread pools can handle timeouts if an execution is too long.
  • The JAX-RS client supports vendor-specific timeout configuration to avoid blocking the network later.

Configuring timeouts enables you to ensure that if something starts being wrong in your system, including a remote...