RabbitMQ is ok in single server and has lots of flexibility but struggles at high throughput ( &gt; 100k&#x2F;sec) and the clustering setup is not great. There are also lots of edge case bugs.<p>If you don&#x27;t need persistence, look at using nats.io which is a much more stable and reliable pub&#x2F;sub system. You can build persistence on top of it or wait a few months until they finish their new project STAN.