<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 12pt;
font-family:Calibri
}
--></style></head>
<body class='hmmessage'><div dir='ltr'><br><div>> Many protocols for distribution of data have a certain ordering and an acknowledgement mechanism. NOTIFY does have an acknowledgement mechanism (but PowerDNS masters don't do a lot with it) but no ordering. It's easier to lose things with NOTIFY than with other replication protocols.<br><br>The problem with that approach is, using backend-specific replication "marries" one to that particular technology, as it is backend-specific.<br><br>The question is not one of "how much does it cost to get the technology in", but "how much does it cost to get it out".<br><br>It almost sounds like pdns should or could be doing more with the NOTIFY message. Or no?<br></div> </div></body>
</html>