def load(data)
      data.each do |key, value|
        check_key!(key)
        set(key, value)
      end
    end
def load(data)
      data.each do |key, value|
        check_key!(key)
        set(key, value)
      end
    end
Public: Loads a hash of data into the cache.

 data - A Hash of data with either String or Symbol keys.

 Returns nothing.