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

Here is a 30 minute research into the jobs out there for RoR compared to Asp.Net & PHP. I searched for the phrases "Ruby on Rails", "PHP", "ASP.NET" and radius of 100 miles from the zip code. There is no doubt some overlap of job posting but this is pretty clear indication of where things are.

The three locations he picked were Cincinnati Ohio (his hometown), New York City and San Francisco and the three sites were Monster.com, Career Builder and Hot Jobs. Overall, the postings varied from place to place - ASP.NET cam out on top in Ohio, ASP.NET in New York and PHP over in San Francisco.