cache_sql

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 69
      def cache_sql(sql, binds)
        result =
          if @query_cache[sql].key?(binds)
            ActiveSupport::Notifications.instrument("sql.active_record",
              :sql => sql, :binds => binds, :name => "CACHE", :connection_id => object_id)
            @query_cache[sql][binds]
          else
            @query_cache[sql][binds] = yield
          end

        # FIXME: we should guarantee that all cached items are Result
        # objects.  Then we can avoid this conditional
        if ActiveRecord::Result === result
          result.dup
        else
          result.collect { |row| row.dup }
        end
      end