What is the role of message brokers in data exchange systems?

Message brokers in data exchange systems act as intermediaries that receive, store, and forward messages between different components or services. This allows for asynchronous interaction, relieves senders and receivers, and also enhances the system's reliability and scalability.

Main functions of a message broker:

• Buffering messages so that the receiver can process them at a convenient time.
• Guaranteed message delivery.
• Routing messages to the appropriate recipients.
• Supporting various exchange models (queues, publish-subscribe).

Examples of popular message brokers: RabbitMQ, Apache Kafka, Redis Streams.