I’d check out the event system. If a particular event invalidates your cache, just clear it or the region of it that’s invalid. Joe H. | HP Software *From:* hibernate-users-bounces(a)lists.jboss.org [mailto: hibernate-users-bounces(a)lists.jboss.org] *On Behalf Of *Luiz Fernando O. C. Real *Sent:* Thursday, March 24, 2011 9:06 AM *To:* hibernate-users *Subject:* [hibernate-users] Stale query cache by column Hi, I'm trying to implement a custom QueryCache that, like the example in http://community.jboss.org/wiki/QueryCache, does not invalidate some existing register is updated in a specific table. However, unlike the example, I'd like to do that by analyzing which columns were changed in an update. More precisely, I have an User table, which has a lastLogin column. I'd like to keep the QueryCache valid when I update the lastLogin of an User. I haven't found any way to do that yet. Is that possible? Thanks in advance. -- Luiz F. O. Corte Real Vida Geek http://vidageek.net Caelum Objects http://www.caelumobjects.com