"Queues are single-threaded in RabbitMQ, and one queue can handle up to about 50 thousand messages"

um, what the hell does that mean? 50k and it self-destructs? 50k/s 50k/ms? 50k and then it gets so slow as to be useless. I'm a #RabbitMQ n00b, but this makes no sense to me.

https://www.cloudamqp.com/blog/2018-01-08-part2-rabbitmq-best-practice-for-high-performance.html