English 中文(简体)
各种情况下复制数据储存的一致性
原标题:High replication datastore consistency across instances

确实存在一个很简单的问题。 问 问 问 问 问 问 题

我的理解是,在下面的询问中,我可能会误导一些新的<代码>put的实体。

messages = Message.all().filter( user = , current_user).fetch(20)

但是,如果假设一个实体从这一询问中返回,将总是由(根据可能不是在第20点)归还,是否安全?

如果是,它是否适用于同一实体的其他查询(使用不同的索引)

messages = Message.all().filter( user = , current_user)
                        .filter( posted > , old_date) .fetch(20)
最佳回答

如你做的操作绝对不会对结果产生任何影响,所有事例都质疑同一套数据储存服务器。

一旦一个新实体(或对一个实体的修改)在质问结果中显示,你可以假定,它将在今后全部执行该询问。 这并不意味着该实体将回答different查询,但应当包括询问。

问题回答

暂无回答




相关问题
How to make logging.debug work on Appengine?

I m having a tough time getting the logging on Appengine working. the statement import logging is flagged as an unrecognized import in my PyDev Appengine project. I suspected that this was just an ...

gqlQuery returns object, want list of keys

Is there a way to convert the GqlQuery object to an array of keys, or is there a way to force the query to return an array of keys? For example: items = db.GqlQuery("SELECT __key__ FROM Items") ...

Integrating Google AppEngine with a Thick Client

I want to make a multi-user client-server solution with Java Swing thick client as a front-end and Google AppEngine (Java one) as a back-end. The problem is that GAE provides only web-based forms for ...

sorl.thumbnail : thumbnail is not a valid tag library?

I am trying to install sorl.thumbnail but am getting the following error message: thumbnail is not a valid tag library: Could not load template library from django.templatetags.thumbnail, No module ...

热门标签