PFC wrote:
>
>> What you seem not to grasp at this point is a large web-farm, about
>> 10 or
>> more servers running PHP, Java, ASP, or even perl. The database is
>> usually
>> the most convenient and, aside from the particular issue we are talking
>> about, best suited.
>
>
> The answer is sticky sessions : each user is assigned to one and
> only one webserver in the cluster and his session is maintained
> locally, in RAM. No locks, no need to manage distributed session...
Sticky sessions can cause enormous problems. I have just worked on a
site whose problems largely come back to having to use a load balancer
in front of an app server farm that required sticky sessions.
They are not a solution, they are a disease.
cheers
andrew
