Can one mirror a web server ?

Jim Popovitch jimpop at yahoo.com
Thu Feb 3 06:54:39 UTC 2005


On Wed, 2005-02-02 at 20:17 -0800, Pete Tenereillo wrote:
> Jim, I agree the default TCP timeout of 1 minute on Netscape/Firefox seems 
> high... a good question to post over there. I also agree that  "works like a 
> charm" was stretching it. Still better than counting on BGP (or nothing) 
> though, wouldn't you agree?

Yes, it does beat nothing.   I'm toying with the idea of creating a Bind
wrapper (listens on external interface, queries Bind on localhost) that
will perform a test (http/ftp/icmp/smtp/etc) to verify queries before
responding.  It could even cache statuses of tests so that inline
latency is near zero.  Now, if I could find a way to do it all based on
DNS TXT records I think that I'll have a winner.  Any input?  Anyone?
Bueller? 

-Jim P.

> 
> ----- Original Message ----- 
> From: "Jim Popovitch" <jimpop at yahoo.com>
> To: "Pete Tenereillo" <pt_bind at hotmail.com>
> Cc: "Kevin Darcy" <kcd at daimlerchrysler.com>; 
> <comp-protocols-dns-bind at isc.org>
> Sent: Wednesday, February 02, 2005 7:10 PM
> Subject: Re: Can one mirror a web server ?
> 
> 
> > On Wed, 2005-02-02 at 18:16 -0800, Pete Tenereillo wrote:
> >> Kevin, why do call out the browser multiple A record failover process as
> >> "slow"? Slow relative to what? It takes between 12 and 21 seconds with IE 
> >> at
> >> the default settings (clearly the most common, time depends on version), 
> >> and
> >> a minute or so with Netscape (and I think FireFox). In neither case is a
> >> "site unavailable" type dialog box displayed to the user. It just 
> >> silently
> >> connects. I thought that was the intent of multiple A records??? Seems to 
> >> me
> >> it works like a charm.
> >
> > Working like a charm is a bit of a stretch with Firefox on Linux (kudos
> > to IE for getting it right).  Firefox seems to wait at least a minute or
> > more, and then forgets the IP address that worked and retries from the
> > top of the list when navigating to another page on the same hostname.
> > Firefox makes it impossible to consider it working or charming. ;-)  I
> > will however retract my earlier statement that this yields a page
> > timeout.
> >
> > -Jim P.
> >
> >
> > 



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