RabbitMQ and message priority

Question

Does RabbitMQ have any concept of message priority? I have an issue were some more important messages are being slowed down due to less important messages sitting before it

Answer 1

The answers on this question are out-of-date. As of RabbitMQ 3.5.0, there is now in-core support for AMQP standard per-message priorities. The documentation has all the gory details, but in short:

• You need to define the queue's priority range at the time the queue is created;
• Messages without a priority set get a priority of 0;
• Messages with a numeric priority higher than the maximum set on the queue get the highest priority the queue supports.

More interesting caveats are in the docs. It's well worth reading them.