Kwang Kang

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Top Stories by Kwang Kang

The Java Naming and Directory Interface (JNDI) is an Application Programming Interface (API) used to locate resources registered in the naming service of a Java 2 Platform Enterprise Edition (J2EE) server such as IBM WebSphere Application Server version 5. The JNDI lookup process is an expensive operation and should be performed judiciously. Caching of EJB home objects is a recommended approach to minimizing performance costs. This article will show the performance benefits of implementing this practice in a J2EE-centric application. The application will consist of a servlet interacting with an EJB object. For learning purposes, our exercise uses IBM WebSphere Studio Application Developer version 5. The EJB of Interest A simple stateless session EJB (2.0) will provide the necessary features to perform this exercise. The following implementation is intentionally simpl... (more)

Apache James

In today's society, it's second nature to contact family, friends, and colleagues via e-mail. E-mail has become so integral to our daily ritual that we cannot stay away from it as we make use of personal digital assistants (PDAs) and other pervasive devices to have it readily available. How do these billions of digital messages get to users across the globe? A client/server setup is required to participate in the exchange of e-mails. It was just a few years ago that expensive server software packages were used for the typical e-mail solution. Cheaper solutions have been plagued by... (more)

Keeping in the Know with JRas

JRas is a logging and tracing facility built into IBM WebSphere Application Server (WAS) that relies on JRas as its internal logging framework. Programmers can also leverage this powerful logging system infrastructure to keep an eye on their enterprise applications powered by WAS. Developers can use the JRas Java APIs to generate both log and trace messages. Used properly, these two mechanisms can provide priceless information regarding the application's process of execution. In this article, the reader will learn to use JRas through the context of a sample application. The provi... (more)

Keeping in the Know with JRas

JRas is a logging and tracing facility built into IBM WebSphere Application Server (WAS), which relies on JRas as its internal logging framework. Programmers can also leverage this powerful logging system infrastructure to keep an eye on their enterprise applications powered by WAS. Developers can use the JRas Java APIs to generate both log and trace messages. Used properly, these two mechanisms can provide priceless information regarding the application's process of execution. In this article, the reader will learn to use JRas through the context of a sample application. The pro... (more)