Hi all, This is MATSUMOTO Ryosuke. I am apache module developer in Japan.
My best access tuning module is "mod_vlimit". mod_vlimit allows “Apache HTTP Server” administrators to limit the number of simultaneous connections(ex, perl php) from all clients to the file or directory. Mod_vlimit do NOT need to use mod_status. The distribution page is http://modules.apache.org/search.php?id=2570. It would be greatly appreciated that it gives the impression to me. Best Regards,