nanog mailing list archives
Re: What DNS Is Not
From: Jack Bates <jbates () brightok net>
Date: Mon, 09 Nov 2009 09:28:21 -0600
Alex Balashov wrote:
Thought-provoking article by Paul Vixie: http://queue.acm.org/detail.cfm?id=1647302
Bah, many of the CDN's I've dealt with don't seed geographical responses based on DNS, but rather use many out of band methods for determining what response they will hand out. The primary reason for short cutting cache is to limit failures in case the system a requestor is going to goes down.
And different CDN's behave differently, depending on how they deliver content, support provider interconnects, etc. I'd hardly call many of them DNS lies, as they do resolve you to the appropriate IP, and if that IP disappears, try and quickly get you to another appropriate IP.
The rest of the article was informative,though. Jack
Current thread:
- Re: What DNS Is Not, (continued)
- Re: What DNS Is Not David Andersen (Nov 09)
- Re: What DNS Is Not bmanning (Nov 09)
- Re: What DNS Is Not Patrick W. Gilmore (Nov 09)
- Re: What DNS Is Not Edward Lewis (Nov 09)
- Re: What DNS Is Not Patrick W. Gilmore (Nov 09)
- Re: What DNS Is Not Jorge Amodio (Nov 09)
- Re: What DNS Is Not Martin Hannigan (Nov 09)
- Re: What DNS Is Not bmanning (Nov 09)
- Re: What DNS Is Not Jorge Amodio (Nov 08)
- Re: What DNS Is Not Glen Turner (Nov 16)
- Re: What DNS Is Not Brandon Galbraith (Nov 16)
- Re: What DNS Is Not Jack Bates (Nov 16)
- Re: What DNS Is Not Andrew Cox (Nov 19)
- Re: What DNS Is Not Randy Bush (Nov 19)
- Re: What DNS Is Not Matthew Palmer (Nov 20)
- Re: What DNS Is Not Eduardo A. Suárez (Nov 19)
- Re: What DNS Is Not Mark Andrews (Nov 19)
- Re: What DNS Is Not Jorge Amodio (Nov 19)