Premature Optimization

From Wallym's Blog:

You see, I have seen a lot of programmers try and implement caching because it is cool as oppossed to there being a real performance problem.

I've also seen this in the workplace. Some other resources on premature optimization:

• http://c2.com/cgi/wiki?PrematureOptimization
• Cook Computing
• Junfeng Zhang's .Net Framework Notes