On the dynaTrace blog there's a recent post with a few things they've learned about web application development from some of the major companies out there including Zappos and Monster.

For a recent edition of the Swiss Computerworld Magazine we listed our Top 10 Performance Problems as we have seen them over the years when working with our clients. I hope this list is enlightening – and I’ve included follow-up links to the blogs to help better understand how to solve these problems.

Performance issues mentioned include:

• Too Many Database Calls
• Too chatty on the remoting channels
• Wrong usage of O/R-Mappers
• Wasteful handling of scarce resources
• Bloated web frontends