Good blog post about performance - also applies to Delphi

Delphi has a great flexibility in how databases are accessed and handled, and therefore often perform really, really well. However, the urge to improve, is never-ending, and here is a great article for those, that really want to know about performance:

http://highscalability.com/numbers-everyone-should-know

The article focuses on web apps, but actually applies to almost any kind of application.