I don't know what your URLS look like, but I would take the old URLS and
have your app serve a 410 error to those. And do that early in your app
logic.

Also if you are trying to run for free, Python 2.7 thread safe will help a
lot.


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Anders
Sent: Thursday, January 26, 2012 12:53 PM
To: Google App Engine
Subject: [google-appengine] over quota - google bots

I recently made a significant change in my app (python 2.5) when I had to
"collapse" many pages into one - hiding functionality for users that had
become unstable/unauthorized.  I am definitely a newbie to how this would
impact search engine bots, but basically a huge number of pages all changed
and got redirected to the same "you can't see that anymore" type page.

Since this occurred, my stable and growing app of ~ 3yrs has continually
crashed with over quota errors - specifically read requests.  My naive
approach is to blacklist the ips of the bots hitting the page so much, but
this only temporarily fixes the problem until a new bot does the same.

I saw the following encouraging post of a user that found a solution:

http://groups.google.com/group/google-appengine/browse_thread/thread/3c91056
b8be5c9a7/44a9baa0ef38a047?lnk=gst&q=over+quota+read+operations+by+google+bo
t#44a9baa0ef38a047

So it looks like I need to use memcache, something in the past I hadn't
needed/investigated how to use.

Any other quick fix solutions?  I need to keep the site up (and
affordable!) until I can put in the development time to relieve this issue.

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