That sounds rather like the DNS "NOTIFY" signal, which a master sends to its sla...

		andreasvc on May 25, 2011 \| parent \| context \| favorite \| on: Google Exec Says It's A Good Idea: Open The Index ... That sounds rather like the DNS "NOTIFY" signal, which a master sends to its slaves (secondary nameservers) to trigger a zone transfer when DNS data has been updated. Without that secondary servers are forced to download the zone data e.g. every hour.