Re: [appengine-java] gae不支持事务？

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 nbaer...@gmail.com 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

Re: [appengine-java] Re: Manually restart GAE on the cloud

You can try to disable it, and re-enable later. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to

Re: [appengine-java] Which is more efficient? single query or a key only query followed by batch get

In my previous test, query is faster. -- keakon 2010/4/28 Joe Fawzy joewic...@gmail.com: Hi all the title says it all... which one is more efficient in:   cpu usage   time consumption thanks Joe -- You received this message because you are subscribed to the Google Groups

Re: [appengine-java] Re: App instance recycling and response times - is there solution?

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 skzr@gmail.com: create a cron:every one minutes to run for keep

Re: [appengine-java] Re: Any single entity or entity group can only be updated about five times a second.

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