不能rollback，但可以roll forward。
这篇可能对你有帮助：
http://www.keakon.net/article/1843
--
keakon
My blog(Chinese): www.keakon.net
Blog source code: https://bitbucket.org/keakon/doodle/
2010/12/16 EtuO
> 谢谢大家，只能开启两个事务来解决啦。
>
> 在 2010年12月16日 下午6:11，kartik kudada 写道：
>
> If following operation throw
You can try to disable it, and re-enable later.
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In my previous test, query is faster.
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keakon
2010/4/28 Joe Fawzy :
> Hi all
> the title says it all...
> which one is more efficient in:
> cpu usage
> time consumption
> thanks
> Joe
>
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> You received this message because you are subscribed to the Google Groups
> "Google App
I've tried this, but after 1 day, GAE recycled my instance every 40 seconds.
Then I used task queue to request my site per 30 seconds, but GAE
started to recycle every 20 seconds.
So I don't think it's a good way.
2010/1/13 杨浩 :
> create a cron:every one minutes to run for keep your app online in
It means you can do 5 writes per second for 1 entity group.
Say you have 1000 entities in 1 entity group, you can update each of
them in a transaction, and do this transaction at most 5 times/sec.
But most time you may just update 1 or 2 entities, and it's also no
more than 5 times/sec.
And if the
Python works fine.[image: chatbot.PNG]
2009/9/4 Michael Davidson
>
> Hi Terry -
>
> There is a slight problem in the implementation of parseMessage(). It
> currently doesn't pay attention to the encoding of the elements in the
> POST, assuming they are UTF-16. In fact, the POST comes in encoded
You can try google.dns.tancee.comI have used this CNAME for half an year,
and it keeps available behind GFW.
2009/9/1 Capsicum annuum
>
> Old CNAME ghs.google.com //does not work
> appspot-china.google.com //does not work
>
> China...China..
> >
>
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