Some scenarios require a non-durable persistence such as the development environment or a lightweight client not interested in durability across restarts:
Persistence at a glance
For a description of each feature, see the persistence at a glance legend.
| Feature | |
|---|---|
| Storage Types | Sagas, Outbox, Subscriptions |
| Transactions | None |
| Concurrency control | Optimistic concurrency |
| Scripted deployment | Does not apply |
| Installers | Does not apply |
Configuration
endpointConfiguration.UsePersistence<NonDurablePersistence, StorageType.Sagas>();
endpointConfiguration.UsePersistence<NonDurablePersistence, StorageType.Subscriptions>();
endpointConfiguration.UsePersistence<NonDurablePersistence, StorageType.Outbox>();
All information stored is discarded when the process ends.
Saga concurrency
When simultaneously handling messages, conflicts may occur. See below for examples of the exceptions which are thrown. Saga concurrency explains how these conflicts are handled, and contains guidance for high-load scenarios.
Starting a saga
Example exception:
System.InvalidOperationException: The saga with the correlation id 'Name: OrderId Value: f05c6e0c-aea6-48d6-846c-d1663998ebf2' already exists
Updating or deleting saga data
Non-durable persistence uses optimistic concurrency control when updating or deleting saga data.
Example exception: