如何清理开发数据存储区？

In Google App Engine Go SDK sometimes we can fill the local datastore with a bunch of test data. It's tiring to delete thousands of records 20 at a time using the web interface. Is there a command the erases the local datastore?

Simply provide the --clear_datastore command line parameter when starting:

goapp serve --clear-datastore

Documented at: The Go Development Server: Using the Datastore.

To clear the local datastore for an application, use the --clear_datastore=yes option when you start the web server:

Note that the documentation was "copied" from the Python section, you need to use it as presented above (you get an error if you try to execute goapp serve --clear_datastore=yes).

I don't know about Go, but in Java you can simply delete local_db.bin from WEB-INF/appengine-generated folder. An empty file will be created next time you run the app.