I had talked about scaling the existing applications to work in a cluster environment here. Subsequently, I had posted on findings on the products available in the market Terracotta here.
As part of the same study, I came across this article, which details what all goes into building a strong, extensible, and flexible J2EE apps, tap into a WebSphere® cluster environment. This article describes what you need to consider when designing a Web-based application in a WebSphere Application Server cluster environment, including application file update and synchronization, serialization of session objects, and dynamic caching.
Filed in: J2EE