如何在重新启动本地App Engine应用程序后避免丢失本地Google云端存储数据？

Question

Now, after restarting a local App Engine app, local Google Cloud Storage data will be lost. How to avoid this?

[update] I use Java. It seems the Cloud Storage data is not saved in \\war\\WEB-INF\\appengine-generated. When I use CTRL-C to terminate the server and restart it again, the data saved in Cloud Storage will not be found.

Answer 1

Do you mean a local version of the datastore? Add a flag like this: --datastore_path=/some/path/to/store/a/local/datastore/dev_appserver.datastore . It will store a local version that will persist. Otherwise, it overwrites the temp version every time you restart the app.

Lipis is correct. There are other commands that may be more suitable. From the Command-line arguments :

--storage_path=...

Path at which all local files (such as the Datastore, Blobstore files, Google Cloud    Storage Files, logs, etc) will be stored, unless overridden by --datastore_path, --blobstore_path, --logs_path, etc.

Answer 2

You can also specify the location of the data store in java, but it's using undocumented features.

dev_appserver --property=datastore.backing_store=c:/temp/ds.bin <app directory>

To do it with Maven , please see my answer here