How to cluster treecache

[yangju]

I am new to treecache. We use jboss without clusting. But we do need to cluster treecache. My question is: can we cluster treecache without clustering jboss instances? If so, what configuration needed? My understanding is that all nodes have to share the same cluster name and udp address, and also set CacheMode as REPL_ASYNC or REPL_SYNC. Is that all?

Also, if we use treecache as hibernate second level cache, if the treecache is distributed, then updating the database and updating all the caches across the cluster are in one transaction? Or the database update is comiitted first and then followed by the caches updates?

Thanks.

Richard

[manik]

Hi Richard

Correct, each node needs to use the same cluster name, mcast address and port, and you should set your CacheMode to REPL_ASYNC or REPL_SYNC.

[manik]

With regards to using TreeCache as a 2nd Level Cache in Hibernate, when you update the db (through Hibernate) the cache is updated within the same tx. Have a look at http://www.hibernate.org/hib_docs/v3/reference/en/html_single/#performance-cache

Also, what version of HIbernate do you plan to use?