Re: [Treebase-devel] load balancing treebase?

[Rutger V. <rut...@gm...>]

I see. I think that means that, in principle, this ought to work.
         -- Famous last words, Rutger Vos, 2012

On Wed, Jul 25, 2012 at 3:36 PM, Mattison Ward
<mat...@ne...> wrote:
> The web server would load balance by session such that a session would
> always be handled by the same tomcat instance (unless the instance
> failed).
>
> On Wed, Jul 25, 2012 at 9:11 AM, Rutger Vos <rut...@gm...> wrote:
>> I think there is a potential for problems with uploads/submissions
>> (where physical files are being processed by mesquite). In the
>> scenario that you're describing, how are sessions managed? I.e. would
>> a session be handled from start to finish by the same tomcat instance?
>>
>> On Wed, Jul 25, 2012 at 2:52 PM, Mattison Ward
>> <mat...@ne...> wrote:
>>> Is treebase written in such a way that having multiple tomcat
>>> application servers would work?
>>>
>>> Is all data written to and read from the database or does curation
>>> involve files in a directory somewhere?
>>>
>>> If we maintained one web server and one database server, but multiple
>>> tomcat servers then a problem with one of the tomcat servers would not
>>> make the site stop responding for everyone.
>>>
>>> The site has been pretty stable for the last few weeks, but during
>>> certain periods, certain file uploads and downloads cause tomcat to
>>> stop responding until restarted.  I have automated the restarting as
>>> much as possible, but load balancing is an option we might want to
>>> consider for the future.
>>>
>>> Regards,
>>>
>>> Mattison Ward
>>> NESCent at Duke University
>>>
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>>
>>
>>
>> --
>> Dr. Rutger A. Vos
>> Bioinformaticist
>> NCB Naturalis
>> Visiting address: Office A109, Einsteinweg 2, 2333 CC, Leiden, the Netherlands
>> Mailing address: Postbus 9517, 2300 RA, Leiden, the Netherlands
>> http://rutgervos.blogspot.com
>
>
>
> --
> Mattison Ward
> NESCent at Duke University
> 2024 W. Main Street, Suite A200
> Durham, NC 27705-4667
> 919-668-4585 (desk)
> 919-668-4551 (alternate)
> 919-668-9198 (fax)



-- 
Dr. Rutger A. Vos
Bioinformaticist
NCB Naturalis
Visiting address: Office A109, Einsteinweg 2, 2333 CC, Leiden, the Netherlands
Mailing address: Postbus 9517, 2300 RA, Leiden, the Netherlands
http://rutgervos.blogspot.com