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I've been using Apache::Session::MySQL for a while, but I've been trying to 
lower the amount of database I/O in some applications that experience spikes 
in server traffic.  So I came up with the idea of using Apache::Session::File 
with the files on /dev/shm, with a cron job to clear up old or expired 
sessions.  Preliminary benchmarks found this to be about 7-8 times faster 
than MySQL.

I'm curious if anyone else has tried this, and if they can think of any 
reasons why this would be a bad idea.

Dan