Building a Scaleable Apache Site?

bobm writes "I'm looking for feedback on any experience building a scaleable site. This would be a database driven site, not just a bunch of static pages. I've been looking for pointers to what other people have learned (either the easy way or hard way). I would like to keep it Apache based and am looking for feedback on the max # of children processes that you've been able to run, etc. Hardware-wise, I'm looking at using quad Xeons or even Sun E10K systems. I would like to stay non-clustered if possible."