There shouldn't be. If you go over quota GAE should return a 503 error.

This is a long shot, but any chance you have accidentally enabled traffic
splitting? This is a new feature that allows you to very easily do A/B
testing:

http://code.google.com/appengine/docs/adminconsole/trafficsplitting.html

Anyone else seeing similar problems?

--
Ikai Lan
Developer Programs Engineer, Google App Engine
plus.ikailan.com



On Fri, Mar 2, 2012 at 6:14 AM, andidol <andreas.dolin...@gmail.com> wrote:

> Hi,
> I just migrated my AppEngine App to 2.7 and concurrent requests.
> Everything works except some requests response with a 404 Not Found (The
> resource could not be found.) Google Frontend Server error.
> What is going on here? It works the most time but *sometimes* requests
> get a 404 response from my app. The URL definitely exists and should get
> handled as it does 90% of the requests.
> Are there limitations on an instance which returns 404 if I go beyond them?
>
> Thank you
>
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