Reposting - I apologize for the previous HTML post.  Hit send too early.  Anyway...

We are looking at log4net as a new logging app but are really interested in something that will allow us to handle all logging asynchronously.  Basically, we want the HTTP request to complete without waiting for the logger to finish.  I was reading in the documentation about logging in multi-threaded apps and also saw a newsgroup post regarding the AsyncForwardAppender, but did not find anything touching multithreaded logging in a single thread http environment.  Does log4net support the functionality we're looking for?  If not, is that a feature that is on the development roadmap at all?  Please let me know if I totally missed something obvious in the documentation.  I appreciate any help you can provide.



Derek

I recall seeing some numbers from a long time ago showing that the async code in NLog is faster than the AsyncAppender. You may want to investigate that. I think there are test cases showing the speed of the log4net AsyncAppender vs. the NLog appender in the NLog distribution. I haven't run those tests myself.

log4net's AsyncAppender processes items by using a delegate passed to System.Threading.ThreadPool.QueueUserWorkItem which then processes the log on a background thread. It looks like NLog uses some sort of producer/consumer pattern. When it recieves a message it immediately posts it to a shared queue then a consumer deques the item (or batch of items) using a Timer (every 50ms?) and processes them on a seperate thread.

I haven't used the AsyncAppender or NLog's AsyncTargetWrapper so I could be way off with my comments.