As per my understanding JBoss Cache has been used for Caching in clustered version of JBoss Portal.
And also from the documentation features list it can be infered that JBoss Portal supports Render-view Caching.
I am not able to figure out the corresponding configuration for render-view caching. Basically I am not sure which files to look into.
Please help me regarding this.
you can see this post.
it works with 2.4
with 2.6, I don't know.
changes may have been made, with use of JBossCache.
In 2.4, the cache for rendering the portlets (cache of the fragments) is using the session, but not jboss cache.
For clustering, i don't know.
hope it helps