local GAE datastore does not keep data after computer shuts down
The datastore typically saves to disk when you shut down.  If you turned off your computer without shutting down the server, I could see this happening.
On my local machine (i.e. http://localhost:8080/), I have entered data into my GAE datastore for some entity called Article. After turning off my computer and then restarting next day, I find the datastore empty: no entity. Is there a way to prevent this in the future?
How do I make a copy of the data in my local datastore? Also, will I be able to upload said data later into both localhost and production?
My model is ndb.
I am using Max OS X and Python 2.7, if theses matter.