We recommend using the [NDB Client Library for Datastore](https://docs.cloud.google.com/appengine/docs/standard/services/ndb), which has several benefits compared to this client library, such as automatic entity caching via the Memcache API. If you are currently using the older DB Client Library, see the [DB to NDB Migration Guide](https://docs.cloud.google.com/appengine/docs/standard/services/ndb/db_to_ndb).