I find the debug level of logging far too verbose. It has loads of internal trace stuff to do with memory allocation, connection opening/closing etc. I can't see the wood for the trees.
I would like a log level that traces the decisions made, internal redirects etc for each URL processed. This will help me fix problems with my configuration files.
I suggest that decision tracing should be logged at the info level, then the details of memory allocation etc can remain at the debug level.
Normal production service would be at notice level or above.
Rick