[AusNOG] squid peering mesh

[Nicholas_Maesepp at scee.net]

Love varnish. We actually sit varnish in front of squid, with an aim to 
remove squid completely. Main advantages other than speed is more control 
and manipulation, ability to add headers, redirect incoming users, split 
content on backends - dymanic pages from one backend, static content from 
another. 

New version coming has some nice features like better ESI support, also 
GZIP support. Even if the client doesn't accept gzip it can still gzip 
content from the backend (useful if there is distance / limits between 
your backend servers) before unzipping it and sending to the client.

Varnish also has some neat debugging / logging tools - Can use replay to 
capture live traffic and replay against the server, so ability to repeat 
real world tests in a controlled way. 

Lot more, but those are the main ways we use Varnish which we can't get 
from squid. 

Cheers
Nick




From:   Damien Morris <damien at yahoo-inc.com>
To:     "ausnog at ausnog.net List" <ausnog at ausnog.net>
Date:   02/03/2011 01:24 PM
Subject:        Re: [AusNOG] squid peering mesh
Sent by:        ausnog-bounces at lists.ausnog.net



On 2/02/11 7:06 PM, "Chris Keladis" <ckeladis at gmail.com> wrote:
>On Wed, Feb 2, 2011 at 9:09 AM, Damien Morris <damien at yahoo-inc.com>
>wrote:
>>You hear more about squid being used as transparent caches for paranoid
>>management to monitor their uses, or as reverse proxies in front of
>>webservers than caching consumer data these days.
>On the subject of reverse-proxies, i've heard Varnish is pretty sweet
>(read: fast) :)
>http://www.varnish-cache.org/about

Any advantages over squid besides speed..? I'll forego any soapboxing here
about well architected web applications requiring reverse-proxies at all..
=)
 

>>Dynamic web pages, cheaper/faster bandwidth and SPoF issues with proxies
>>have all seen their use at ISPs diminish.
>When long-fat-pipes (satellite and the like) were all the rage, proxy's
>helped reduce HTTP RTTs (or increased them for a miss) :)
>But these days, as they say, YMMV :)

I definitely, sadly, remember the days when they were necessary :) I
forgot to also mention that CDNs take away many of the reasons to run your
own proxies these day, and do a much better job of it..

Cheers,
Damien.

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