You can cache data in JSR 168 portlets in order to avoid unnecessary backend requests. First, you see how to leverage the IBM WebSphere Application Server dynacache infrastructure to store cached data. Next, you see how to generate cache keys for data which is shared across all components in the Web application and which has a session scope. Then, you look at a second cache key generation technique to address the need for caching data that is private to a portlet window. An example bookmark portlet illustrates both caching techniques.
Check out Caching data in JSR 168 portlets with WebSphere Portal V5.1
Filed in: WPS