I had a bit of a performance problem with some pages that I have tracked back to my use of '.containsKey()' on the Seam messages Abstract Map. eg: | @In | Map<String, String> messages; //This is the Seam messages bundle | | public void aMethod() { | if(messages.containsKey("key.mykey")) { | //do something | } | } | As containsKey isn't a method of the AbstractMap in org.jboss.seam.international.Messages, it goes into a mad run through all sorts of methods (ELResolver, Pages.java etc). The result of this is that a containsKey() on messages takes over 800 times longer than a get(). For 1800 properties in my messages.properties file it takes about 800ms compared to under 1ms for a get(). Nice to have found this as I had no idea that it would have such an impact. The easy solution would be to add a containsKey() to the AbstractMap in org.jboss.seam.international.Messages. This works well for me (and is under 1ms): | public boolean containsKey(String key) { | if(messages.get(key).equals(key)) { | return false; | } else { | return true; | } | } | Cheers, Damian. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4100622#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...