Use this : http://paste.blixt.org/1581
>From Google I/O
On 17 oct, 08:03, rjcarr <[EMAIL PROTECTED]> wrote:
> I have a simple app engine app that offers a download. I catch the
> download request and record the time of the download in the data store
> before sending the file. I'd also like to keep track of the total
> number of downloads. Obviously, the number of rows in the data store
> represents the total number of downloads.
>
> However, looking at the API, the count() method of Query return a
> maximum of 1000. This won't work because my number will grow much
> larger than that.
>
> So as a fix I added a count field to my data model so that the count
> is updated upon every request. It looks something like this:
>
> class Counter(db.Model):
> count = db.IntegerProperty()
> date = db.DateTimeProperty(auto_now_add=True)
>
> class DownloadHandler(webapp.RequestHandler):
> def get(self):
> query = Counter.all()
> query.order("-count")
>
> counter = query.fetch(1)
> count = counter[0].count
>
> counter = Counter()
> counter.count = count + 1
> counter.put()
>
> This works, but I'm seeing quite a few timeout errors in the logs.
>
> So, what am I missing? Is there a better way to keep track of a
> counter? I'd prefer to make the counter persistent and not simply a
> member of the class as that seems volatile and likely to reset (say,
> on a redeploy).
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