Google Cloud DataStore说明

Question

I know appengine datastore and what is cloud datastore, using cloud datastore is always an confusion for me, following are my questions:

1. does cloud datastore requires Compute Engine ? (in google docs i saw like enable compute engine)
2. how to access cloud datastore from appengine application (this is very needed)
3. how to enable multiple application to access this common datastore ?

Note: I know how to activate it, but I didn't get clear answers for my questions above.

Answer 1

Your questions:

1) No, cloud datastore can also be user by other platforms

2) App engine has native support to use the (cloud) datastore . The cloud datastore is based on the App Engine datastore to make it available for others.

3) You can share the cloud datastore, but see this issue

Answer 2

Atlast, i can able to access from cloud datastore from appengine application, following are my answer,

Ans For Ques 1:

Cloud Datstore doesn't require compute engine instance.

Ans for Ques 2:

To access cloud datastore, you need either service account credentials or u must have access token for authenticated user with Scopes set to Datastore, and user email.

Use Google api Client library,or simply use ProtoBuf library provided in documentation.

Ans for Ques 3:

simply use create credentials from application u want to access and use it in other applications

https://developers.google.com/datastore/docs/getstarted/overview

Thanks!