Configure Duplicate Detection and Cluster Connections
37.4. Duplicate Detection and Cluster Connections Cluster connections internally use core bridges to move messages reliable between nodes of the cluster. Consequently they can also be configured to insert the duplicate id header for each message they move using their internal bridges. To configure a cluster connection to add the duplicate id header, simply set the use-duplicate-detection to true when configuring a cluster connection in hornetq-configuration.xml. The default value for this parameter is true. For more information on cluster connections and how to configure them, please see Chapter 38, Clusters.