[Seaside] Server Identification in Session Keys

[Lukas Renggli]

On 17 August 2010 17:28, Sven Van Caekenberghe <sven at beta9.be> wrote:
> Hi,
>
> I am trying to configure Apache 2's mod_proxy_balancer with sticky sessions towards multiple Seaside 3 instances.
>
> What I need, apart from starting multiple VM's with the same image running on different ports (I am working on one machine), is that each VM adds a server identification to the session key (_s), so that the balancer can route everything in the same session to the same instance.
>
> How can this be done ?

The simplest thing is to use the port number as the identifier.

> As far as I understand, it is WAApplication (WARegistry>>#handleFiltered:) that hands out session ID's in the _s parameter (#keyField), but I cannot immediately find where the session ID's are generated (is it WACache>>#store using WAKeyGenerator ?) and how I could interfere in a clean way.
>
> Has anyone done this before ?

Sure, that's standard practice. Override #updateUrl: either in your
custom session class or in the root component.

Lukas

-- 
Lukas Renggli
www.lukas-renggli.ch