This is also my personal experience with message queues, even though I haven't had a chance to work with NATS yet. Kafka is just a really solid piece of enginee

This is also my personal experience with message queues, even though I haven't had a chance to work with NATS yet. Kafka is just a really solid piece of engineering when you need 5-50 servers. With that many servers you can handle millions of messages per second that usually enough for a mid size company. I am not sure about higher scale but I believe LinkedIN has much larger clusters.