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From Pid <...@pidster.com>
Subject Re: Virtual host configuration - best practise?
Date Fri, 25 Sep 2009 14:14:10 GMT
On 25/09/2009 14:03, Pid wrote:
> On 25/09/2009 08:26, hepabolu wrote:
>>
>>
>> awarnier wrote:
>>>
>>> hepabolu wrote:
>>> ...
>>>
>>>> However, from the Tomcat docs I understand that any change to
>>>> server.xml
>>>> requires a restart of Tomcat which would mean that the existing
>>>> (non-dummy)
>>>> hosts which are already in production, i.e. up and running, will
>>>> also be
>>>> taken offline. This is the heart of the problem...
>>>
>>> Just as another look on the issue.
>>>
>>> <skip/>
>>>
>>> This may be one case where the added complication of having an Apache
>>> httpd in front of Tomcat is justified.
>>>
>
>> Do you have any info on processing times using apache + mod_jk?
>
> Your app will be the defining factor in terms of responsivity, there is
> an overhead when using HTTPD in front of Tomcat but it's usually
> negligible compared to the time spent in your application.

Ignore this below, it's an answer to another thread.
Teach me to rush some replies out... Doh.

p

> OP: Chris asked you if you were using session replication, I'd also ask
> if so, which type?
>
> If your interest is in load balancing, you are using sticky sessions and
> you are not too bothered about forcing re-login or session
> re-initialisation when the client shifts node, you could disable session
> replication.
>
> A positive change in performance would confirm that session replication
> is causing the slow down in the one node.
>
>
> You didn't specify (did you?) which algorithm you are using to load
> balance, have you experimented with the various options available?
>
>
> p
>
>
>
>> Thanks.
>>
>> Bye, Helma
>


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