Getting Started
Architecture
NServiceBus
Transports
Persistence
ServiceInsight
ServicePulse
ServiceControl
Monitoring
Samples

Outbox with RavenDB persistence

The Outbox feature requires persistence in order to store messages and enable deduplication.

Extra collections created by the RavenDB Outbox persistence

To keep track of duplicate messages, the RavenDB implementation of Outbox creates a special collection of documents called OutboxRecord.

Deduplication record lifespan

The RavenDB persistence retains deduplication records for 7 days by default and runs the cleanup operation every minute.

These settings can be modified by specifying the desired values in the settings dictionary:

endpointConfiguration.SetTimeToKeepDeduplicationData(TimeSpan.FromDays(7));
endpointConfiguration.SetFrequencyToRunDeduplicationDataCleanup(TimeSpan.FromMinutes(1));

The cleanup task can be disabled by specifying a value of Timeout.InfiniteTimeSpan for SetFrequencyToRunDeduplicationDataCleanup. This can be useful when an endpoint is scaled out and instances are competing to run the cleanup task.

Related Articles

  • Outbox
    Ensure message consistency with the NServiceBus Outbox, handling message deduplication and transactional integrity in distributed systems.