DNS Failover

Greg Maccarone gmaccarone at gmail.com
Tue Oct 12 18:46:36 UTC 2004

On Tue, 12 Oct 2004 11:01:45 +0200, Anthony Wilkins
<anthony_wlkns at yahoo.com> wrote:
> Hi, is there anybody who can help me in finding a solution to a problem
> I have?
> My web server is sometime temporarily down and I want people to go to my
> remote site where I have a backup web server. Can I change DNS on the
> Internet fast enough for incoming requests to be handled by my redundant
> web server? Normally I don't want traffic to go to the remote site.
> Thanks, Anthony W.

A way this could be achieved with DNS is to have a low TTL on the host
entry that could be changing because of the outage.  Then in most
cases it would take no longer than the specified TTL for the changes
to be seen throughout the rest of the world.

my $.02.

Greg Maccarone
gmaccarone at gmail.com

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