Hi Greg, You might want to check out the Capabilities API: http://code.google.com/p/googleappengine/source/browse/trunk/python/google/appengine/api/capabilities/__init__.py
It will let you determine if a particular service is expected to be unavailable. -Nick Johnson On Mon, Jun 8, 2009 at 6:58 AM, Greg <[email protected]> wrote: > > With the upcoming maintenance, I want to add a check at the start of > the handler to see if I should display a maintenance notice. This will > run on every request, so it would be good to use as lightweight a > check as possible. The documentation says CapabilityDisabledError is > thrown by db.Model.put(), db.Model.delete(), and > db.run_in_transaction(). > > My question is this: can I use run_in_transaction() with a dummy > function - testing without the overhead of actually doing a put()? > > I realise that in this case memcache is also being disabled, so I can > test by doing a memcache.set() instead, but it would be nice to > develop a function that can be called to test both, for cases when > maintenance only affects one or the other. Also could a Googler > comment on how syncronised the disabling of datastore and memcache > are? Milliseconds, seconds, or minutes? > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
