cache_sql

# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 76
      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
        result.dup
      end