Create a database that is backward compatible with Cloud Datastore in GCP

Question

I have a requirement to create a database on GCP that is backward compatible with the existing Cloud Datastore. Is this possible? Can somebody elaborate?

Answer 1

You could create a new Cloud Firestore database,  where you can configure the database instance to run in Datastore mode which makes the database backwards-compatible with Cloud Datastore.

Cloud Firestore in Datastore mode uses Cloud Datastore system behavior but accesses Cloud Firestore's storage layer, removing the following Cloud Datastore limitations:

• Eventual consistency, all Cloud Datastore queries become strongly consistent.

• Transactions are no longer limited to 25 entity groups.

• Writes to an entity group are no longer limited to 1 per second.

Datastore mode disables Cloud Firestore features that are not compatible with Cloud Datastore:

• The project will accept Cloud Datastore API requests and deny Cloud Firestore API requests.

• The project will use Cloud Datastore indexes instead of Cloud Firestore indexes.

• You can use Cloud Datastore client libraries with this project but not Cloud Firestore client libraries.

• Cloud Firestore real-time capabilities will not be available.

• In the GCP Console, the database will use the Cloud Datastore viewer.