RabbitMQ plugin to remove duplicate messages

Question

I have a RabbitMQ queues for documents generation. Basically, each document has type and state (new, processing, ready), so I use topic exchange with r

Answer 1

As you wrote, ActiveMQ has "duplicate message detection", but it works differently. It does not remove old message from the queue but it does not add new message to it instead. So it works the same as plugin for RabbitMQ.