I need to have a variable that points to a MemCache instance so I looked at the Rails caching code to see how they do it. They use a Ruby class variable (or a few of them). That surprised me since class variables in Ruby as so gnarly.
I thought I would post the question here to see if anyone knew / had an opinion. Why would they use a class variable instead of a class instance variable? Especially since Rails has some nice support for class instance variables.
I'm asking because if there is a reason, I'd like to know so I could avoid whatever problems the Rails guys are trying to avoid.
Thank you, Perry
