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Introducing quorum queues on Amazon MQ for RabbitMQ

Compute Blog



This article introduces quorum queues, a new feature in Amazon MQ for RabbitMQ that provides higher availability and data safety for message queues. Quorum queues use the Raft consensus algorithm to replicate messages across multiple nodes, ensuring that a majority of nodes have the data even if some nodes fail.

Specifically, the article covers:

  • Overview of quorum queues and how they work
  • When to use quorum queues (scenarios requiring high availability and consistency)
  • When not to use quorum queues (temporary or unreplicated queues)
  • Best practices for using quorum queues (limiting queue length, using publisher confirms and manual acknowledgements)
  • Open-source improvements made by Amazon MQ to quorum queues (automatic membership reconciliation, voter status, inconsistent state management, default queue type, and membership management permissions)
  • Conclusion recommending the adoption of quorum queues for scenarios requiring high availability and resilience


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