Varnish and sticky sessions

[aotto at mosso.com]

Hash by client source port number and you'll get a nice even distribution.

Adrian
Sent via BlackBerry by AT&T

-----Original Message-----
From: "Albert Lash" <albert.lash at docunext.com>
Date: Fri, 20 Nov 2009 13:24:54 
To: Artur Bergman<sky at crucially.net>
Cc: varnish-dev at projects.linpro.no<varnish-dev at projects.linpro.no>; Robert Olsson<robert.olsson at qbranch.se>
Subject: Re: Varnish and sticky sessions

Use of a cookie would definitely work, and there are probably a bunch of
other simpler methods too. One example - I would add client ip addresses
to the hash and select a backend based upon it, randomizing previously
unknown ip addresses. Depending on where the clients are, the load balance
might become off-balance... my mileage always vary.

I vote for keeping it as a documented configuration rather than a built-in
feature.

> set a cookie and direct on that cookie?
>
> On Nov 20, 2009, at 1:21 AM, Robert Olsson wrote:
>
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> Hello!
>> Is there any plan to support sticky sessions in varnish?
>> Some of the sessions will be a cookie-based logins and I need them
>> to use the
>> same backend (in varnish point of view) during the whole session.
>> First when the backend server stop answering connections the clients
>> (or sessions)
>> will be directed to another backend server.
>>
>> Is this possible to solve today in current stable release or will it
>> be
>> supported in a future version of varnish?
>>
>> Thank you for your answers :)
>>
>> //Robert Olsson
>> - --
>> Med vänlig hälsning / Best Regards
>> Robert Olsson
>> Change Consultant
>>
>> Qbranch Stockholm AB
>> Office: +46 8 672 50 00
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>> meddelandet till någon.
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1.4.9 (GNU/Linux)
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>> iEYEARECAAYFAksGX6AACgkQJ0skqjbzPOPlcQCcDv7+55VQn44Mnvg+zzlxQaXj
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