...
	<memcached><!-- memcached cache backend related config -->
        <cache>
                <servers><!-- any number of server nodes can be included -->
                        <server>
                                <host><![CDATA[123.123.123.123]]></host>
                                <port><![CDATA[11211]]></port>
                                <persistent><![CDATA[1]]></persistent>
                        </server>
                </servers>
        </cache>
        </memcached>
	...