Interesting, thanks Markus. So in order to use this I would need to (1) begin a transaction (2) write to, say, node '/a' (2a) any other client that tries to read '/a' will block (3) commit transaction (3a) clients reading '/a' will be notified and continue Does that sound accurate? But the DummyTransactionManager says it synchronizes in-memory only, so cache clients on two different machines wouldn't be sync'd. Or are the node locking calls still made by the cache client in order to sync between servers? Thanks. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4238322#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...