Re: Does squid re-resolve hostnames named in squid.conf?

From: Bob Franklin <>
Date: Wed, 16 Sep 1998 17:05:51 +0100 (GMT Daylight Time)

On Wed, 16 Sep 1998 11:54:52 -0400 (EDT) Michael Pelletier
<> wrote:

> One issue that arises out of this is that if a host's IP address
> changes, the address does not drop out of Squid's IP cache -- and thus
> Squid does not attempt another DNS lookup -- until the squid.conf
> "positive_dns_ttl" time expires. This defaults to 360 minutes, or six
> hours. The DNS TTL value is ignored.

Ah... I thought this might be the case (using the same DNS cache for the
hosts in squid.conf as for normal lookups). 6 hours is fine for me (I
don't think UKERNA are going to change our caches around that much...
although I guess they might if some machines die... in which case, in
light of this information, I'd expect them to inform me (nudge nudge!)).


  - Bob

  I do mail, web, news, DNS and C++... but I don't understand any of it...
  Bob "Mince" Franklin ~{], CNE ;), MCSE ;) Tel. (0118) 931 8432
  Systems and Communications Fax. (0118) 975 3094
  Computer Services Centre
  University of Reading, U.K.
Received on Wed Sep 16 1998 - 09:07:46 MDT

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