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 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. Learn about thread pool tuning, EJB tuning, and JMS tuning, which are crucial parts of enterprise applications.
The persistence layer and the JBoss Clustering service are two of the most crucial elements which need to be configured correctly in order to run a fast application. These aspects are covered in detail with a chapter dedicated to each of them.
Finally, Web server tuning is the last (but not least) topic covered, which shows how to configure and develop web applications that get the most out of the embedded Tomcat web server.
Chapter 1, Performance Tuning Concepts, discusses correct tuning methodology and how it fits in the overall software development cycle.
Chapter 2, Installing the Tools for Tuning, shows how to install and configure the instruments for tuning, including VisualVM, JMeter, Eclipse TPTP Platform, and basic OS tools.
Chapter 3, Tuning the Java Virtual Machine, provides an in-depth analysis of the JVM heap and garbage collector parameters, which are used to start up the application server.
Chapter 4, Tuning the JBoss AS, discusses the application server's core services including the JBoss System Thread Pool, the Connection Pool, and the Logging Service.
Chapter 5, Tuning the Middleware Services, covers the tuning of middleware services including the EJB and JMS services.
Chapter 6, Tuning the Persistence Layer, introduces the principles of good database design and the core concepts of Java Persistence API with special focus on JBoss's implementation (Hibernate).
Chapter 7, JBoss AS Cluster Tuning, covers JBoss Clustering service covering the low-level details of server communication and how to use JBoss Cache for optimal data replication and caching.
Chapter 8, Tomcat Web Server Tuning, covers the JBoss Web server performance tuning including mod_jk, mod_proxy, and mod_cluster modules.
Chapter 9, Tuning Web Applications on JBoss AS, discusses developing fast web applications using JSF API and JBoss richfaces libraries.
A technical prerequisite for this book is knowledge of and expertise with the Java Enterprise API and the basics of the JBoss application server. Besides the technical skills, which are necessary to grasp the tuning concepts, no other requirements are necessary. As a matter of fact, all the software discussed in this book can be freely downloaded and used both in development and in production systems.
This book is for Java architects who design and configure Enterprise applications. It is great for Java developers who want to get into the inner details of the application server and of the correct tuning methodology. Application testers will also find this book useful as they will learn how to monitor the performance of the middleware with the correct instruments.
In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.
Code words in text are shown as follows: "If you then request the ordered items through the customer.getItems() method, this would also fill the collection of items ordered with another database hit."
A block of code is set as follows:
@NamedQueries(
{
@NamedQuery(
name = "listCustomers",
query = "FROM Customer c WHERE c.name = :name"
)
})
public class Customer implements Serializable {
}When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
Session session =HibernateUtil.getSessionFactory().openSession();
session.beginTransaction();
for (int index = 0; index <1000;index++) {
Person person = new Person();
book.setCountry("Usa");
book.setCity("NY");
person.setName("Inhabitant n." + index);
session.save(person);
// Flush every 50 records
if (index % 50== 0) {session.flush();session.clear();
}
session.getTransaction().commit();
session.close();Any command-line input or output is written as follows:
export JAVA_HOME=/installDir/jdk1.6.0_20
New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "Then pick up the method you want to test and select Configure which automatically configures your web service properties".
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