Take a look at this primer for how a local caching DNS server can help
your customers get the closest CDN or content caching node:
https://blog.cloudflare.com/a-brief-anycast-primer/
You should really avoid using Google DNS or the old BBN 4.4.4.4 or
4.2.x.x addresses as they really don't allow anycast to work in your favor.
How hard is it to setup a DNS caching server? Pretty darn easy. Even the
Mikrotik OS running on a virt or an old routerboard should prove to
provide decent DNS caching.
As far as good CDNs go just perform a quick traceroute and make sure it
goes to your local datacenter/internet exchange rather than one on the
far side of the planet. :)
ryan
On 3/23/15 9:08 AM, Ken Hohhof wrote:
I don’t understand how the caching server is going to help with CDNs.
Actually, with so much Internet content now being either dynamic HTML
or streaming, I wouldn’t think caching would be worth it, unless you
are talking about something like a Netflix OpenConnect appliance.
Maybe you can cache software updates, I’m not sure about that.
*From:* That One Guy <mailto:[email protected]>
*Sent:* Monday, March 23, 2015 10:35 AM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] testing DNS server performance
Geographically close CDNs. I want to make sure we are getting content
from Illinoisish rather than california for netflix, since all that
matters is netflix
On Mon, Mar 23, 2015 at 10:30 AM, Josh Baird <[email protected]
<mailto:[email protected]>> wrote:
For performance, look at queryperf which I think is provided by
ISC/bind.
I'm not sure what you mean by "we are getting good CDNs and the
like," though.
Josh
On Mon, Mar 23, 2015 at 11:27 AM, That One Guy
<[email protected] <mailto:[email protected]>> wrote:
Im bringing live our first caching server today. Is there a
good tool for comparing queries between DNS servers.
Im not all that concerned about speed since we are so small
there wont be a huge amount of benefit I would think. Im
primarily wanting to make sure we are getting good CDNs and
the like
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