> The example is a very active web site, the flow is this:
>
> query for session information
> process HTTP request
> update session information
>
> This happens for EVERY http request. Chances are that you won't have
> concurrent requests for the same row, but you may have well over 100 HTTP
> server processes/threads answering queries in your web server farm.
You're crazy :) Use memcache, not the DB :)
Chris