Directors user sessions

Erik Torlen duja at
Sun Apr 6 22:55:49 CEST 2008

But the loadbalancing is already implenteed. I dont see why it shouldn't 
be used as loadbalancer if the functionality exists?
I don't want to use one place for all sessions, like a file share or 
something in that direction. Im thinking about creating
a Header that is called X-Backend: (a|b|c|d). This could be used to 
check what backend the user should use. Its really not
a nice way to do it but its a way of doing it.

Is there any idea that I could create a ticket for a feature like this?

/ Erik

Cherife Li skrev:
> On 2008-3-28 19:05, duja at wrote:
>> Hi,
>> I got a question regarding the Directors in varnish vcl. If user A is 
>> logging in to and the website is using varnish 
>> (with directors) in front of 4 backend servers. The 4 backend servers 
>> is identical.
>> User A is logging in and hits server 1. He then goes to his profile 
>> and hits server 2. The server 2 doesn't know that user A is logged
>> and redirect him to some "Not logged in"-page.
>> Is there any way for varnish to lookup which server that user A 
>> should be directed to? Some kind of Sticky Session function?
> IMHO, Varnish is for caching, rather than for redirecting.
> Maybe you could consider HAProxy, or pound, or IPVS, or
> similar implementation.
> Besides, I know that sessions can be shared.
>> / Erik
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>> varnish-misc at

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