code: def ft_sugadd (record:, attribute:, score: 1)
        # => combine model with attribute to create unique key like user_name
        key = "#{@model.to_s}:#{attribute}"
        string = record.send(attribute)
        REDI_SEARCH.call('FT.SUGADD', key, string, score)
        # => INCR
      rescue Exception => e
        Rails.logger.error e if defined? Rails
        return e.message
      end
docs: add string to autocomplete dictionary
  
   @param record [Object] object
   @param attribute [String] - name, email, etc
   @param score [Integer] - score
   @return [Integer] - current size of the dictionary