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)

Logging patterns

There are but a few important logging patterns you can utilize to try to minimize the logging overhead implied, without any benefit from a functional point of view. Let's go through the most common ones.

Testing your level

The most important thing about a log message is its level. It is the information allowing you to efficiently ignore the messages - and their formatting/templating - if they will be ignored later anyway.

For instance, take this method that relies on loggers at different levels:

public void save(long id, Quote quote) {
logger.finest("Value: " + quote);
String hexValue = converter.toHexString(id);
doSave(id, quote);"Saved: " + hexValue);