On 16Jun17, Damian Guppy allegedly wrote: > DNS does not provide the sort of intelligence necessary to direct > requests to the most appropriate server
Huh? A DNS can be as intelligent as it wants to be. On 16Jun17, Alex Huntington allegedly wrote: > From what I understand the locality is pulled from the APNIC registration > details. It's very variable. Some GSLBs are quite smart and others are quite dumb. I've worked on one that takes transport costs, latency, current network utilization and server utilization into account before deciding which server addresses to return (or redirect to). But there are some that simply use the shortest BGP path to make a decision or the about 80% accurate geo-IP mapping from sources such as IP2Location. In general there's no easy way to know how smart a CDN is simply by looking at a few samples - such as the one that started this thread. In the Akamai case they maintain their own geo-IP database (called Edgescape?) which appears to use registration details amongst other data as a base but they actively curate this database to make it more accurate. I'm sure they'll say that geo is just one of many inputs into the sekret sauce of their CDN. As you say tho Alex, it's certainly a cool tool. Mark. _______________________________________________ AusNOG mailing list [email protected] http://lists.ausnog.net/mailman/listinfo/ausnog
