Cloud Firestore V1 Client - Class ConcurrencyMode (1.27.3)

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

Methods

name

Parameter
NameDescription
value mixed

value

Parameter
NameDescription
name mixed

Constants

CONCURRENCY_MODE_UNSPECIFIED

Value: 0

Not used.

Generated from protobuf enum CONCURRENCY_MODE_UNSPECIFIED = 0;

OPTIMISTIC

Value: 1

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

Generated from protobuf enum OPTIMISTIC = 1;

PESSIMISTIC

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;

OPTIMISTIC_WITH_ENTITY_GROUPS

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;