Benson Wong wrote:
All that said, we still haven't committed to Drupal long-term because for us there is big issue that hasn't been fully solved: Drupal scalability. I'm pretty confident that Drupal scales, but optimizing servers for Drupal is still a pretty rare skill. (And, yes, we are diving into the forums on the topic.)
I think I blabbed about this at OSCMS in Vancouver, at Drupal for the Enterprise discussion. My philosophy go for the lowest hanging fruit, and work your way up the tree. You can probably quadrupal Drupal's pages per second in under a half hour.
Here's my scaling tree. As you progress up the tree, you will find that time, money, maintenance, headaches will all increase.
Nice summary. However, this isn't really Drupal specific, but applies to all PHP applications or even web apps. Cheers, Gerhard