We've got code here that will serve that many requests in two minutes,
without breaking a sweat.
Read your entire user database into memory and do binary searches on it.
Put the server in single threaded blccking mode.
Put alot of RAM in the box.
I'll see if I can make diffs available for this code.
/*
Matthew N. Dodd | A memory retaining a love you had for life
winter@jurai.net | As cruel as it seems nothing ever seems to
http://www.jurai.net/~winter | go right - FLA M 3.1:53
*/