在Google App Engine中，如何在更新SDK后保持开发数据存储的可用性？

Question

Is there a way to keep a copy of your datastore file after updating the SDK, as you might know, updating the SDK will make old datastore incompatible with the new SDK and you can't access the data.

Is there an easy way to avoid this issue or should I save all the data to a text file or something and then repopulate the data automatically?

I am using GWT with Objectify by the way.

Answer 1

You should be able to download and later upload your data when required as described here . Note that is mentions that "downloaded data might not include recently saved entities." if you are using a High replication datastore.