[Seaside] ProxyPass and the P Option

[Boris Popov]

Did you indicate to balancer how to determine sticky sessions? I think there's a setting for it.

Cheers!

-Boris
(Sent from a BlackBerry)

----- Original Message -----
From: seaside-bounces at lists.squeakfoundation.org <seaside-bounces at lists.squeakfoundation.org>
To: Seaside - general discussion <seaside at lists.squeakfoundation.org>
Sent: Tue Nov 06 04:36:02 2007
Subject: Re: [Seaside] ProxyPass and the P Option

As a matter of fact, Lukas, when I woke up this morning, I thought I should
gather some data. So I started tracking the Transcript. Here's what I found:

With ONE VM (9090) in the balancer cluster:

Initial page (typing http://www.goodsexnetwork.com)
/seaside/go/

Clicking on About Us
/seaside/go/?_k=LQeoPxhB&_s=GKpDhxmXUPTXvMES&5
/seaside/go/?_k=BeOXObFr&_s=GKpDhxmXUPTXvMES

Clicking on Services
/seaside/go/?_k=GcdAcWkd&_s=GKpDhxmXUPTXvMES&6
/seaside/go/?_k=ymJpsfHH&_s=GKpDhxmXUPTXvMES

Clicking on Registration/Login
/seaside/go/?_k=GBUIFPiq&_s=GKpDhxmXUPTXvMES&7
/seaside/go/?_k=FQErKPay&_s=GKpDhxmXUPTXvMES

Clicking on Contact Us
/seaside/go/?_k=LHOSwmFl&_s=GKpDhxmXUPTXvMES&9
/seaside/go/?_k=yqdTQvsk&_s=GKpDhxmXUPTXvMES

As you can see, the session number remains constant. My web app is working
perfectly!


With THREE VMs (9090, 9091, 9092):

Initial page
(9090)
/seaside/go/

Clicking on About Us
(9092)
/seaside/go/
(9091)
/seaside/go/?_k=HOPZQNPd&_s=AnxoaOgasUPcEfCp&5

Clicking on Services
(9091)
/seaside/go/
(9090)
/seaside/go/?_k=EWqdbkqZ&_s=LCdHsZYDEHKgRPJx&6

Clicking on Registration/Login
(9090)
/seaside/go/
(9092)
/seaside/go/?_k=MSKlyDVX&_s=IPsgzreQVBMvqmbr&7

Clicking on Contact Us
(9092)
/seaside/go/
(9091)
/seaside/go/?_k=dvMVcwbK&_s=EdWhWjDdMnBoRAPP&8

Clicking on About Us
(9091)
/seaside/go/
(9090)
/seaside/go/?_k=wscOnKIR&_s=YOTvBvZGLAwbxnlk&5


As you can see, what's happening when you have more than one VM in the
balancer cluster is that each time you click on a page, it starts a new
session! And in a different VM!

The succession of port numbers (9092/9091, 9091/9090, 9090/9092, 9092/9091,
9091/9090) suggests that the sessions are not sticky. The load balancer is
cycling through my VMs. But I'm the only user! I should only have one
session.

What is going on???

Regards,
Richard

-------
Did you observe access_log, error_log, rewrite_log, etc. of your
server? Did you consider adding some logging statements to the
Smalltalk web-server to see what comes in and what goes out?

Lukas


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