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References: <4CDBF9C5.3000701@christopherschultz.net>
	<4CDBFC2F.4070906@apache.org>
Date: Thu, 11 Nov 2010 20:49:01 +0100
Message-ID: <AANLkTin2+qAHaDQFTuXNuOX5uBcJU3xZ51thtuM5sbVE@mail.gmail.com>
Subject: Re: Recommendations for (or against) a "hardware" load balancer
From: Leon Rosenberg <rosenberg.leon@gmail.com>
To: Tomcat Users List <users@tomcat.apache.org>
Content-Type: text/plain; charset=ISO-8859-1

On Thu, Nov 11, 2010 at 3:22 PM, Mark Thomas <markt@apache.org> wrote:
> On 11/11/2010 14:12, Christopher Schultz wrote:
>> All,
>>
>> I'm looking for a modest load balancer to perform SSL termination and
>> work well with Tomcat's cookie- and URL-based sticky session mechanism.
>>
>> Does anyone have any recommendations?
>
> Decent H/W usually cost $$$

On a side note, the HW LBs usually come in pairs at prices starting at
40K for a cheap pair.
However, two 'cheap' machines, either real or vm, with keepalived will
do the job in your case. For HW loadbalancers url-based sticky session
is much mor expensive as cookie or ip based.
For SSL termination not only amount of hits, but also number of
parallel sessions is important, cheaper models will handle no more
than 500 concurrent ssl sessions (protocol level session, not http
session).


>
>> If Apache httpd is just as good for an environment that gets thousands
>> of hits per day, not millions, then I'm happy to run using that as well,
>> though maintaining a whole Linux machine just for httpd load-balancing
>> seems like more trouble than it's worth.
>
> For that few hits, you might get away with just a VM.

And its definitely the cheaper version :-)

On a side, side, side note, why don't you just rent it all? Usually a
hosting provider can provide you ports on his LB/FW for a small amount
of money per month.

regards
Leon
>
> Mark
>
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