If you want all those features you should be looking at JBoss Cache instead. JBoss Cache evolved out of JGroups' DistributedHashTable and added features such as concurrency safety, transactions, cache loading, eviction, etc etc.

Also, to the poster of the original article, you mention JBoss Cache twice - and forget to mention features such as POJO Cache not having any requirements on objects being Serializable, and the fact that JBoss Cache (as of late) has added features such as Buddy Replication where state isn't copied to everyone across a cluster but to pegged buddy nodes only, increasing scalability significantly if you have session affinity.