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Subject: RE: Clustering / Load Balancer / Session Cookie
Date: Tue, 1 Jun 2004 15:49:43 +0100
Message-ID: <98C84BAA0FC00F44905EAAF345790A6C501C9F@exchair1.becogent.com>
Thread-Topic: Clustering / Load Balancer / Session Cookie
Thread-Index: AcQt+Pj0bmCd89FWTY2sJOFCmwgKugZ7kwWA
From: "Dale, Matt" <Matt.Dale@beCogent.com>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>

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Just a quick post to say thanks, we went live using pen and 3 clustered =
instances of 5.0.25 today and its working a treat. Load is spread almost =
perfectly. The only feature I would have as a "nice to have" would be to =
apply wieghtings to the target hosts but other than that spot on and no =
problems whatsoever so far.

Ta
Matt

-----Original Message-----
From: Filip Hanik - Dev [mailto:devlists@hanik.com]
Sent: 29 April 2004 15:47
To: Tomcat Users List
Subject: Re: Clustering / Load Balancer / Session Cookie


http://siag.nu/pen
http://balance.sourceforge.net

pen is my favorite, performs best and works on both windows and unix

Filip
----- Original Message -----
From: "Dale, Matt" <Matt.Dale@beCogent.com>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Thursday, April 29, 2004 8:51 AM
Subject: RE: Clustering / Load Balancer / Session Cookie


Thanks for the quick reply.

So the supplied tomcat load balancer isnt of any use for stateful =
sessions where the cluster is spread accross several machines?

-----Original Message-----
From: Peter Lin [mailto:tcw00lfel@yahoo.com]
Sent: 29 April 2004 14:44
To: Tomcat Users List
Subject: Re: Clustering / Load Balancer / Session Cookie


to paraphrase, you want to have it look like the same machine to the =
browser (ie user).

the easiest way is to use a hardware load balancer. I've use this =
approach a couple times in the past and it works well.

peter lin


"Dale, Matt" <Matt.Dale@beCogent.com> wrote:

Hi,

I'm currently testing a setup up on 3 machines.

2 have tomcat 5.0.19, these 2 are clustered with session replication and =
have a simple test app.

The other, also 5.0.19, runs the supplied balancer app.

I've written a simple round robin rule which passes the requests back =
and forth as it should, I can see the sessions being
replicated fine in the logs so all is ok there.

BUT my problem is accessing the same session on both machines. Basically =
I'm stumped, I know its not accessing the same session
because the redirected URL is different but how can I get around this?

I've tried a using an HTML frame on the balancer machine but that was =
clutching at straws and obviously didnt work.

Any ideas would be appreciated.

Ta
Matt

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