My question is what is the maximum number of users that Apache webserver 2.2.2 can handle, i have a website which sometimes gets over 300+ concurrent users, however apache d
See this guide for an overview: http://www.devside.net/articles/apache-performance-tuning
It's all mostly about the Apache MPM that you have selected (thread based, or process based) and it's settings.
Then you need to match it up with the KeepAlive settings (I use a thread based MPM and hence set KeepAlives to On and for 3 seconds).
Are you using Apache under Linux or Windows? Which MPM?