instance method cached_find_by

# File activerecord/lib/active_record/core.rb, line 442
        def cached_find_by(keys, values)
          with_connection do |connection|
            statement = cached_find_by_statement(connection, keys) { |params|
              wheres = keys.index_with do |key|
                if key.is_a?(Array)
                  [key.map { params.bind }]
                else
                  params.bind
                end
              end
              where(wheres).limit(1)
            }

            statement.execute(values.flatten, connection).then do |r|
              r.first
            rescue TypeError
              raise ActiveRecord::StatementInvalid
            end
          end
        end