DNS more than 1 IP adres

Barry Margolin barmar at alum.mit.edu
Thu May 13 00:32:02 UTC 2004


In article <c7tmdr$190n$1 at sf1.isc.org>,
 Johan Louwers <suntacNOSPAMPLEASE at dds.nl> wrote:

> I have a question, if I use google.com there are more than 1 google
> servers and I will be send to the best server fore my connection.
> 
> 
> I know that it is something with a trick that akamai.com is pulling
> buth I like to know more about this. Are there people that knows how
> such a thing is working or where I can start reading about this?

Akamai probably runs specially designed nameservers (probably not BIND, 
so it's kind of off-topic for this group) that either examine routing 
table or send pings to try to determine roughly where the client is 
located on the network, and then respond with the address of the web 
server that has the shortest network path.

If you go to www.akamai.com, they have a section with white papers on 
their technology.  It probably doesn't get too detailed, since it's 
likely that they consider some of the technology to be proprietary.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***


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