[squid-users] Re: Clock sync accuracy importance?

From: Jon Drukman <jsd@dont-contact.us>
Date: Tue, 15 Apr 2008 10:01:16 -0700

K K wrote:
> Have you considered running one of the machines as an NTP server, have
> the others sync their clock to that?

no, one of the machines is shared hosting so i don't have access to run
my own ntpd on it.

> Yes, explicit 'Expires' headers help squid make smarter decisions.
> If you know an object is going to be good indefinitely (e.g. a GIF for
> a logo), then setting a very long expiration date will ensure squid
> doesn't bother checking with the origin server.
> You might want to also reconsider 'Cache-Control: max-age=300'

reconsider in what way? the pages i am most interested in
cache-controlling are news hub pages, and they should be good for 5
minutes, tops. otherwise the cached version is in danger of falling too
far behind the 'real' news feed.

i guess i don't really understand the difference between doing Expires:
now plus 5 minutes (in apache speak) and Cache-Control: max-age=300

Received on Tue Apr 22 2008 - 13:03:33 MDT

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