Web garden setting in a single processor

[Guest]

Hello All,

Is it a good idea to spawn more than one process for a single web
application. What are some of the side-effects of enabling this feature?

Let's say that a request from user A is served by Process A. Later, when the
request from the same user comes and is handled by Process B, will the
process create a new session key for the user?

Thanks for your clarifications!!