i>the duration and count of database transactions</li><li>the time each message spent in a queue</li></ul></td></tr></tbody></table></section></article><nav class=pagenav><div class=left><a title="Adapter for a simple in-memory quota management system." href=/v1.9/zh/docs/reference/config/policy-and-telemetry/adapters/memquota/><svg class="icon left-arrow"><use xlink:href="/v1.9/img/icons.svg#left-arrow"/></svg>Memory quota</a></div><div class=right><a title="Adapter that implements an Open Policy Agent eng