I don't understand what point you are trying to make? The idea of the code above is that if any of the classloaders looked at doesn't allow caching or blacklisting then you can't cache or blacklist at the global level. e.g. The classloaders could be C1 (canCache=false, canBlacklist=false), C2 On first attempt: C1 == not found C2 == found But C1 says don't cache the result returned from C2 because I might be able to return "found" in future. Or alternatively C1 == not found C2 == not found but C1 says don't blacklist (cache misses) for the same reason. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4077759#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...