Re: Official FreeBSD Binary Packages now available for pkgng

From: Matthias Andree <matthias.andree_at_gmx.de>
Date: Sat, 02 Nov 2013 20:51:47 +0100
Am 02.11.2013 11:50, schrieb Matthew Seaman:
> On 02/11/2013 10:15, Matthias Andree wrote:
>> I understand from Eric's pist that the issue is that through his
>> limiting proxies, the SRV are not available at all so he does not even
>> get to the point where he could get the pkgN.nyi.freebsd.org
>> <http://pkgN.nyi.freebsd.org> name back.
> 
> That doesn't make sense.  All the DNS SRV lookups on pkg.freebsd.org are
> done internally to pkg(8), which then issues an HTTP GET to the specific
> mirror selected by its internal algorithms.  The web cache won't see
> literal 'pkg.freebsd.org' anywhere in the HTTP traffic -- as far as it
> is concerned, it's a simple HTTP request to a specific mirror
> 'pkg1.nyi.freebsd.org', and can be cached using the usual processes.
> 
> What makes it cache unfriendly is that as far as the web cache is
> concerned each of the different mirrors appears to be completely
> independent of the others.  So at the moment the chance of getting a
> cache hit is reduced by a factor of three because of the traffic
> distribution across the three mirrors.

I think it does make sense - if the end user is behind a site where he
must use a proxy because his end user's computer does not resolve any
external addresses, then SRV is not getting you anywhere and you need a
HTTP(S)-based redirector.
Received on Sat Nov 02 2013 - 18:51:58 UTC

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