For Open Source RabbitMQ, in the article Disaster Recovery and High Availabiltiy 101 there is concern with regards to potential duplication during a failover event. How best to address this?
We recommend that you upgrade from Open Source RabbitMQ to Tanzu RabbitMQ because it has a tried and tested disaster recovery solution; Warm Standby Replication.
We recommend using the Blue-Green Deployment which is a migration technique.