Thanks guys for quick response.

 
I was not very precise in what I said before regarding sticky session.
Generally I assume that my Load Balancer )pound) will handle session among a few application server.

Let's see an example. User A is redirected to App Server A. The session is sticky because of cookies. User A closes the browser and logs back to the server 10 minutes later. Will user A be connetced to tha same App Server ? Or rather will by handled to another one because the cookies has been deleted or expired?. I would like avoid the situation where user is AWLAYS redirected to the same App server when new session is established. The goal is that subsequnts requestes within session goes tro the same App server but each new session shall go to another one.

 
And second new item. Let's assume I have 4 application server in the back end. Can I install the pound on one of them and serve the traffic among those 4 servers?  

 Hopefully that makes my assuption clear.  regards
Mariusz

-----Original Message-----
From: Dave Steinberg <dave@redterror.net>
To: pound@apsis.ch
Date: Mon, 31 Mar 2008 17:56:31 -0400
Subject: Re: [Pound Mailing List] pounds - few questions - stickiness

> The requests within the session should be sticky to the same application
> server. It seems the pounds supports this feature ("Pound has the ability to
> keep track of sessions between a client browser and a back-end server")
> It seems to me I can use cookies:
> Session
>             Type    Cookie
>             ID      "sess"
>             TTL     300
>         End

Right, right.

> However not sure If I understand it. Can you please flesh this behaviour out
> ? Who insert the cookies ? Pounds or back end application?

The backend / your application.

> Using a cookie approach does it mean that new session from the same browser
> will be load balance among all back end servers? I thought
> if I use cookies always each session will go to the same back edn server.

I believe you're correct, the same cookie will land you on the same
backend.  That's of course the point of sticky sessions.  :)

> How are back ends selected ? I mean how does the pound select back end from
> a list of active. (round robin, random, by number connections?)

By priority, or if priorities are equal, I believe its random.

> Does pound collect any info (stats) such as active clients, active
> connections, etc in html format ...

poundctl can give you some info, but you'd have to convert to HTML yourself.

> Where can I found more info than under http://www.apsis.ch/pound/index_html?

Take a look at the man page included with the source code.  Its quite
complete.

Regards,
--
Dave Steinberg
http://www.geekisp.com/
http://www.steinbergcomputing.com/

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