Class variable does not retain its value in rails

rubyonrails-talk
1

The way I found to work arround this is to use the Thread.main:

def init if Thread.main[:uuid] == nil    Thread.main[:uuid]=0 end uid = Thread.main[:uuid] += 1 render :json => uid end

http://giladmanor.com/2010/10/rails-application-variable.html

Gilad