9 Nov
2009
9 Nov
'09
10:28 a.m.
Alex Balashov wrote:
Thought-provoking article by Paul Vixie:
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