Amazon MQ now supports RabbitMQ 4.3

Amazon MQ now supports RabbitMQ version 4.3 which adds quorum queue feature enhancements such as compaction, increased priority levels, native delayed retries, and graceful consumer timeouts. RabbitMQ 4.3 also includes various bug fixes and performance improvements for memory management. Quorum queues on RabbitMQ 4.3 performs compaction to reduce disk usage for queues and native support for 32 strict priority levels, compared to the relative 2 levels supported in previous RabbitMQ versions.