#1 Caching with Instance Variables

Mar 04, 2007 | 2 minutes | Performance, Caching

Learn a quick way to improve performance. Just store the end result of an expensive command in an instance variable!

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          application.rb
                
        def current_user
  @current_user ||= User.find(session[:user_id])
end
        
def current_user
  @current_user ||= User.find(session[:user_id])
end