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Amazon MQ Adds Support for RabbitMQ 4.3

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feature patch deprecation

Amazon MQ now supports RabbitMQ version 4.3, introducing significant enhancements to quorum queues. These improvements include compaction for reduced disk usage, native support for 32 strict priority levels, automatic delayed message retries, and configurable consumer timeouts. The update also delivers bug fixes and performance improvements, but deprecates several legacy features like Global QoS and Classic queues v1 storage. Users can deploy RabbitMQ 4.3 brokers using m7g instance types in supported AWS regions, with automatic patch version management.

  • →Enhanced Quorum Queue Capabilities
  • →Removal of Legacy Features
  • →Improved Performance and Stability
Breaking changes (1) ›
  • Removal of Legacy Features

    RabbitMQ 4.3 no longer supports transient non-exclusive queues, Global QoS, and Classic queues v1 storage. Additionally, consumer timeouts do not apply to classic queues in this version.

Features (1) ›
  • Enhanced Quorum Queue Capabilities

    RabbitMQ 4.3 introduces quorum queue compaction to reduce disk usage and native support for 32 strict priority levels. It also adds automatic delayed message retries and protocol-specific consumer timeouts, both configurable via RabbitMQ Policies.

Enhancements (1) ›
  • Improved Performance and Stability

    This release includes various bug fixes and performance enhancements focused on memory management within RabbitMQ 4.3, contributing to overall stability and efficiency.

Read the original announcement →

https://aws.amazon.com/about-aws/whats-new/2026/09/amazon-mq-rabbitmq-43/

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