Right, you need to redesign the way you store this data in the cache's tree structure. Try something like /Table#1/Row#1 and put row #1's data under that node. Row #2's data in /Table#1/Row#2, etc etc. This will reduce contention a great deal. If you want to take things a step further, you could use structure nodes in between, sich as /Table#1/Rows#1-99/Row#1, /Table#1/Rows#100-199/Row#120, etc etc. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4063105#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...