Modern RabbitMQ scales well. RabbitMQ Streams provide a throughput of millions of messages per second. With native support for MQTT, more than a million users c

Modern RabbitMQ scales well. RabbitMQ Streams provide a throughput of millions of messages per second. With native support for MQTT, more than a million users can connect to RabbitMQ: https://www.rabbitmq.com/blog/2023/03/21/native-mqtt https://www.rabbitmq.com/blog/2023/03/21/native-mqtt The new Khepri metadata store in RabbitMQ 4.0 allows for even better scalability.