Cloud Firestore V1 Client - Class ConcurrencyMode (1.53.0)

Reference documentation and code samples for the Cloud Firestore V1 Client class ConcurrencyMode.

The type of concurrency control mode for transactions.

Protobuf type google.firestore.admin.v1.Database.ConcurrencyMode

  Value: 0 
 

Not used.

Generated from protobuf enum CONCURRENCY_MODE_UNSPECIFIED = 0;

  Value: 1 
 

Use optimistic concurrency control by default. This mode is available for Cloud Firestore databases.

Generated from protobuf enum OPTIMISTIC = 1;

  Value: 2 
 

Use pessimistic concurrency control by default. This mode is available for Cloud Firestore databases.

This is the default setting for Cloud Firestore.

Generated from protobuf enum PESSIMISTIC = 2;

  Value: 3 
 

Use optimistic concurrency control with entity groups by default.

This is the only available mode for Cloud Datastore. This mode is also available for Cloud Firestore with Datastore Mode but is not recommended.

Generated from protobuf enum OPTIMISTIC_WITH_ENTITY_GROUPS = 3;