What message broker systems have you used in your practice?

In my practice, I have used several messaging systems with brokers:

• RabbitMQ — for asynchronous task processing and load distribution.
• Apache Kafka — for processing large streams of data and real-time events.
• Redis Pub/Sub — for simple message exchange cases with low latency.

Each of these systems is suitable for different scenarios: RabbitMQ is convenient for task queues, Kafka for scalable stream processing, and Redis for quick notifications.