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. > > My main concern is having two versions running. > > @Brandon: Do you know if an instance is killed during handling requests or > afterwards? > And what happens with if there are concurrent requests? > > > Cheers, > -Andrin > > > On Mon, Feb 20, 2012 at 11:20 AM, Johan Euphrosine <[email protected]>wrote: > >> Hi Andrin, >> >> Have you considered using a dynamic B2 backend? >> >> If the request originate from a form you can even address the backend by >> name directly with: >> >> backendname.appid.appspot.com >> >> Hope that helps. >> >> On Mon, Feb 20, 2012 at 11:15 AM, Andrin von Rechenberg < >> [email protected]> wrote: >> >>> Hey there >>> >>> I'm planning to migrate to Python 2.7. >>> >>> I'm now running on Python2.5. There is one kind of request >>> (lets call it people-search) that uses A LOT of ram. >>> From time to time instances get killed because they exceed >>> the allowed memory allocation. These requests do a lot of >>> RPCs. One people search uses about 100mb of ram. >>> >>> In Python 2.7 I would guess that one instance will handle >>> many people-searches at the same time, because they >>> mostly wait for RPCs. That means that an instance >>> will go out of memory much more often, because every >>> pending request will use 100mb. You handle 2 at the same >>> time, an F1 instance dies. I'm afraid that I will end up in a >>> crash loop pretty soon. >>> >>> Am I right in my assumption? >>> >>> Is there a way to limit the amount of people-searches >>> that one instance handles at the same time? >>> Like threadsafe:false for a certain handler? >>> >>> The only solution I see at the moment is to deploy 2 versions >>> of my app. The main version with threadsafe enabled and >>> a special version with threadsafe disabled. >>> The main app would then not handle people-searches directly, >>> but do a urlfetch to the threadsafe disabled version for >>> people-searches. This way one instance would always >>> only do one people-search because threadsafe is disabled. >>> >>> But it's soooo ugly from a maintenance point of view. >>> Really ugly. >>> >>> Any better suggestions? >>> >>> Cheers, >>> -Andrin >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Google App Engine" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> For more options, visit this group at >>> http://groups.google.com/group/google-appengine?hl=en. >>> >> >> >> >> -- >> Johan Euphrosine (proppy) >> Developer Programs Engineer >> Google Developer Relations >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/google-appengine?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > -- Johan Euphrosine (proppy) Developer Programs Engineer Google Developer Relations -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
