For Pulsar vs. RabbitMQ, here's a good blog: https://streamnative.io/blog/comparison-of-messaging-platforms-apache-pulsar-vs-rabbitmq-vs-nats-jetstream https:/

For Pulsar vs. RabbitMQ, here's a good blog: https://streamnative.io/blog/comparison-of-messaging-platforms-apache-pulsar-vs-rabbitmq-vs-nats-jetstream https://streamnative.io/blog/comparison-of-messaging-platfor... Key points: Throughput • Pulsar showed a higher peak consumer throughput of 2.6M msgs/s compared to RabbitMQ’s 48K msgs/s and NATS JetStream’s 160K msgs/s. • Pulsar was able to support a producer rate of 1M msgs/s — 33x faster than RabbitMQ and 20x faster than NATS JetStream. Latency • Pulsar's p99 latency was 300x better than RabbitMQ and 40x better than NATS JetStream at a topic count of 50. Scalability • Pulsar achieved 1M msgs/s up to 50 topics and provided a publish rate above 200K msgs/s for up to 20K topics. • RabbitMQ was able to process 20K msgs/s, and NATS was able to support 30K msgs/s for topic counts up to 500. [1/50th Pulsar's rate]