Thanks for the good info.

I realize my question was a bit too basic. I'm reading the great list of C resources in the sticky at the top of the forum.

If I run into problems I'll be sure to...

I've written an Object Cache in PHP.
http://code.google.com/p/php-object-cache/

However, it requires PHP Sockets support which is not available on a lot of PHP builds.

Coming to the...