Book Image

JBoss AS 5 Performance Tuning

By : Francesco Marchioni, Jason Savod
Book Image

JBoss AS 5 Performance Tuning

By: Francesco Marchioni, Jason Savod

Overview of this book

Today's organizations need to deliver faster services to a large set of people and businesses. In order to survive this challenge, enterprises need to optimize the performance of their application server along with its components and hardware. Writing faster applications is no longer just an option for your products; it's an imperative requirement, which you cannot ignore. JBoss AS 5 Performance Tuning will teach you how to deliver fast applications on the JBoss Application Server and Apache Tomcat, giving you a decisive competitive advantage over your competitors. You will learn how to optimize the hardware resources, meeting your application requirements with less expenditure.The performance of Java Enterprise applications is the sum of a set of components including the Java Virtual Machine configuration, the application server configuration (in our case, JBoss AS), the application code itself and ultimately the operating system. This book will show you how to apply the correct tuning methodology and use the tuning tools that will help you to monitor and address any performance issues. By looking more closely at the Java Virtual Machine, you will get a deeper understanding of what the available options are for your applications and how their performance will be affected. You will learn about thread pool tuning, EJB tuning, JMS tuning, Enterprise Java Beans, and the Java Messaging Service. The persistence layer and JBoss Clustering service each have a chapter dedicated to them as they are two of the most crucial elements to configure correctly in order to run a fast application. You will also learn how to tune your web server, enabling you to configure and develop web applications that get the most out of the embedded Tomcat web server.
Table of Contents (17 chapters)
JBoss AS 5 Performance Tuning
About the Author
About the Reviewers
A Tuned Mind

Tuning Hibernate and JPA

Programming with JDBC API is quite simple as it is merely a thin layer over the database programming interfaces. However there are some downsides, which you need to consider:

  • First, using native SQL language in your code exposes your application to a tight coupling with the database where your code has been initially developed. Even if the SQL dialects are similar, each database performs differently depending on the structure of the query, necessitating vendor-specific tuning in most cases.

  • Second, when you are using plain JDBC, you need to bridge the gap between the relational model and the object model by creating a layer of intermediate objects or collections which host the data fetched from the DB. This is an unnecessary effort because ORM tools, such as Hibernate, can do it for you out of the box.

  • Finally, by using an intermediate layer which sits between your code and the database it's possible to add additional services like caching which, if properly used,...