Re: [squid-users] Go direct if parent dies

always_direct allow -> Squid MUST go direct

never_direct allow -> Squid MUST NOT go direct

both deny (the default) -> Squid will try to use a parent (or sibling)
if it is determined that the response may be cached and the client
accepts to get cached content. Direct otherwise.

For your preference you should use always_direct for the servers you
do not want to use any peers (i.e. your local servers) in combination
with and prefer_direct off to make squid prefer a bit more to use
parents in favor of going direct where possible (except for
always_direct). Do not use never_direct unless you have certain sites
for which you MUST use a parent, for example the intranet of a
partner company etc...

The main use of never_direct is when you are inside a firewall and
MUST use a parent proxy to reach the Interenet.

Regards
Henrik

On Thursday 20 February 2003 22.17, Christoph Haas wrote:
> Henrik, thanks for replying.
>
> On Thu, Feb 20, 2003 at 09:29:38PM +0100, Henrik Nordstrom wrote:
> > If you want Squid to go direct then you cannot use never_direct..
> > See also prefer_direct.
>
> I have tried various combinations of never_direct and
> always_direct. In fact I never really understood why "always_direct
> allow" is not the same as "never_direct deny". Do you have any
> concrete suggestions on how to write the preference ruleset?
>
> In human language the rules should be:
> - always try to use the parent proxy
> - only if there are no parent (because they are declared as dead)
> try a direct request to the destination web server
>
> IMHO there are only few people who have really understood the exact
> way that parent selection (or "preference") is decided by squid.
>
> Christoph
Received on Thu Feb 20 2003 - 17:45:38 MST