If you want to specify the eviction melodramatically only (no eviction config in the xml file), you have to do it like this: | ExpirationConfiguration expirationConfiguration = new ExpirationConfiguration(); | expirationConfiguration.setTimeToLiveSeconds(2); | EvictionConfig ec = new EvictionConfig(); | List<EvictionRegionConfig> ercs = new ArrayList<EvictionRegionConfig>(); | EvictionRegionConfig erc = new EvictionRegionConfig(fqn, expirationConfiguration); | ercs.add(erc); | ec.setEvictionRegionConfigs(ercs); | admDataCache.getConfiguration().setEvictionConfig(ec); Re:expirationConfiguration.setTimeToLiveSeconds(10); This is a bug, and the workaround is to set EXPIRATION_KEY for all elements, as lovelyliatroim suggested. https://jira.jboss.org/jira/browse/JBCACHE-1399 was created View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4171034#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...