Linux Gazette has an interesting article on Configuring Apache for Maximum Performance. It’s a good read and I can’t find fault with anything said, although it would have been nice if it touched on some of the alternative lightweight web servers out there, especially for the static content, e.g. Lighttpd (now in Sarge backports!). But then, it was about Apache I suppose.
Luckily I also came across another article about using Lighttpd to serve certain content behind Apache.