[Pdns-users] PowerDNS vs UltraDNS??
norbert at linuxnetworks.de
Sat Feb 14 20:36:01 UTC 2004
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On Saturday 14 February 2004 21:02, Mark Bergsma wrote:
> > what might be easier, is doing it using one of the geoip type
> > things...(http://www.maxmind.com/) but might not always return
> > people to the closest mirror etc.
> Coincidently, we have done exactly that, during the last week. We
> have written a new backend called 'geobackend', and is currently
> available via CVS only:
> We are still thinking about ideas to improve it (on the geo-dns
> mailinglist, http://lists.blitzed.org/listinfo/geo ), so please let
> us about what you think. Returning IPs based on BGP info would be a
> nice feature, but we currently do not have a BGP session available.
I think, there's one problem currently not solved properly:
PDNS caches backend queries and whole packets, so the returned answer
is probably a packet already sent to another client at a different
location - if you don't set query-ttl and cache-ttl to zero.
For this type of services it would be nice if they could tell PDNS
that it shouldn't cache packets or queries from these backends.
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