RE: [squid-users] Whats the differenne between sibling mode and pac file

"For HA you need other tools"

Can you please tell me more ? :)

-----Original Message-----
From: Ralf Hildebrandt [mailto:Ralf.Hildebrandt_at_charite.de]
Sent: Thursday, July 29, 2010 6:01 PM
To: Tóth Tibor Péter
Cc: squid-users_at_squid-cache.org
Subject: Re: [squid-users] Whats the differenne between sibling mode and pac file

* Tóth Tibor Péter <tibor.peter.toth_at_mtv.hu>:
> I am confused :)
>
> Not sure, if I'm correct, but squid could be used in sibling mode. In
> this case there are two or more squid nodes communicating to each
> other, and somehow having a load ballance between each oter or so?

Not really load balancing, they query each other for cached data!
 
> If I use a Pac file, I can set who should use Cache Node1,Cache Node2
> in order, and who should try Cache node2, Cache node1 in order to have
> failover, and load ballance as well.

No. With a PAC file, the browser decides which proxy to use for what
kind of access. It's basically a program. But if a specified proxy
should be down, the client will still try and contact it.

> What would happen if one employee is loggen into lets say to an
> Ebanking site to check his/her own account from work, and while he/she
> having an active session, one of the cache servers goes down.

Then it's gone.

> In sibling mode do they replicate data between each other?

No

> If I would use a Pac based configuration I am sure the conetent is not duplicated.

For HA you need other tools

--
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt@charite.de | http://www.charite.de
            
Received on Fri Jul 30 2010 - 10:23:15 MDT