RabbitMQ is decent if you don't use clustering (which, I agree, is shitty). I have some quibbles with the non-clustered parts, but nothing big. Right now, the

RabbitMQ is decent if you don't use clustering (which, I agree, is shitty). I have some quibbles with the non-clustered parts, but nothing big. Right now, the main annoyance is that it's impossible, as far as I understand, to limit its memory usage. You can set a "VM high watermark" and some other things, but beyond that, it will — much like, say, Elasticsearch — use a large amount of mysterious memory that you have no control over. You can't just say "use 1GB and nothing more", which is problematic on Kubernetes where you want to pack things a bit tightly. This happens even if all the queues are marked as durable.