On Tue, Feb 21, 2012 at 3:36 PM, Jeff Schnitzer <[email protected]> wrote:

> On Mon, Feb 20, 2012 at 5:33 AM, Johan Euphrosine <[email protected]>wrote:
>
>> On Mon, Feb 20, 2012 at 11:25 AM, Andrin von Rechenberg <
>> [email protected]> wrote:
>>
>>> I guess that's the same solution as just deploying two different
>>> versions. A threadsafe one and a non threadsafe one. Or did
>>> I misunderstand you?
>>>
>>
>> appcfg.py provide commands to help you manage your backends deployment
>> and configuration, with `backends.yaml` and `appcfg backends update`.
>>
>> That make the solution more convenient than using multiple versions on
>> frontend instances.
>>
>
> This adds the significant downside of no auto-scaling.  I don't see how
> that's more convenient :-)
>

Very true, I guess I just wanted to point out that the tooling makes it
more convenient to deploy multiple backends than different frontend
versions (feature request anyone?).


> Andrin:  In javaland I would simply synchronize the people-search function
> so that at most one thread can execute that routine in a single instance at
> once.  It means all people-search requests in that instance will queue up
> in serial, which could cause undesirable waits if the function takes
> significant time, but if the requests are spread out among enough instances
> it probably won't be an issue.
>
> I don't know what the python equivalent of 'synchronized' is.
>

@synchronized?
http://wiki.python.org/moin/PythonDecoratorLibrary#Synchronization


>
> Jeff
>
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-- 
Johan Euphrosine (proppy)
Developer Programs Engineer
Google Developer Relations

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