I have a situation where we need to limit the number of errors logged and sent to production support. I first thought this filter might be useful, but after analyzing our need, we feel it is not useful. For example, if I limit it to 3 times of repetition, how do we now if the error was fixed or it simply was not thrown due to the filtering? My suggestion is, it can be more useful for practical purpose if there can be some "time duration" parameter in it where one specifies, for example, 1 hr, or 1 minute, to indicate that the error cannot be repeated this many times within certain duration. Kevin -- View this message in context: http://old.nabble.com/DuplicateMessageFilter-tp34083524p34083524.html Sent from the Logback User mailing list archive at Nabble.com.