concurrencyMode property

String? concurrencyMode
getter/setter pair

The concurrency control mode to use for this database.

If unspecified in a CreateDatabase request, this will default based on the database edition: Optimistic for Enterprise and Pessimistic for all other databases. Possible string values are:

  • "CONCURRENCY_MODE_UNSPECIFIED" : Not used.
  • "OPTIMISTIC" : Use optimistic concurrency control by default. This mode is available for Cloud Firestore databases. This is the default setting for Cloud Firestore Enterprise Edition databases.
  • "PESSIMISTIC" : Use pessimistic concurrency control by default. This mode is available for Cloud Firestore databases. This is the default setting for Cloud Firestore Standard Edition databases.
  • "OPTIMISTIC_WITH_ENTITY_GROUPS" : Use optimistic concurrency control with entity groups by default. This mode is enabled for some databases that were automatically upgraded from Cloud Datastore to Cloud Firestore with Datastore Mode. It is not recommended for any new databases, and not supported for Firestore Native databases.

Implementation

core.String? concurrencyMode;