问题描述
正确配置开发服务器和生产服务器，我想在Google App Engine上设置一个 Staging 环境，测试新的开发版本，然后再部署到生产中。
Having properly configured a Development server and a Production server, I would like to set up a Staging environment on Google App Engine useful to test new developed versions live before deploying them to production.
我知道两种不同的方法：
I know two different approaches:
A。第一个选项是修改 版本参数。
A. The first option is by modifying the app.yaml version parameter.
version: app-staging
我不喜欢这种方法是生产数据被我的分期测试污染，因为（如果我错了，更正我） ：
What I don't like of this approach is that Production data is polluted with my staging tests because (correct me if I'm wrong):
- 分段版本和生产版本共享相同的数据存储
- Staging version and Production version share the same Datastore
B。第二个选项是修改 应用参数
B. The second option is by modifying the app.yaml application parameter
application: foonamestaging
使用这种方法，我将完全创建一个第二个应用程序独立于生产版本。
我看到的唯一缺点是我被迫配置第二个应用程序（管理员设置）。
使用backup\restore工具，如这个解决方案也很好。
with this approach, I would create a second application totally independent from the Production version.
The only drawback I see is that I'm forced to configure a second application (administrators set up).
With a backup\restore tool like Gaebar this solution works well too.
什么样的方法是用来为您的Web应用程序设置一个分段环境？
此外，您有任何自动化脚本可以更改在部署之前，您可以使用yaml？
What kind of approach are you using to set up a staging environment for your web application?
Also, do you have any automated script to change the yaml before deploying?
推荐答案
我在设置中选择了第二个选项，因为它是最快的解决方案，我没有做任何脚本来更改部署的应用程序参数。
I chose the second option in my set-up, because it was the quickest solution, and I didn't make any script to change the application-parameter on deployment yet.
但是，我现在看到的方式是选项A是一个更清洁的解决方案。您可以使用几个代码行根据版本切换数据存储区命名空间，您可以从环境变量CURRENT_VERSION_ID动态获取文档，如下所述：
But the way I see it now, option A is a cleaner solution. You can with a couple of code lines switch the datastore namespace based on the version, which you can get dynamically from the environmental variable CURRENT_VERSION_ID as documented here: http://code.google.com/appengine/docs/python/runtime.html#The_Environment
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