[logback-dev] logback async appender

We recently switched several applications from log4j to logback and were wondering about the lack of async appender in logback. Is it not needed? I thought it was a good thing for performance and reliability reasons. I see there is an old enhancement request for it in logback bugzilla, http://bugzilla.qos.ch/show_bug.cgi?id=55 It seems that someone attempted this earlier this year (but maybe hasn't checked in yet?) http://old.nabble.com/how-to-get-appender-ref-list-via-Joran-to22295581.html... If needed and desired, we could work on a patch for this feature. In general, should it work similar to the log4j one? Or is someone else already working on it? thanks, -Gordon