What is the main role and purpose of a Message Broker?

A Message Broker system acts as an intermediary for transmitting messages between different applications or services. Its main role is to ensure reliable, asynchronous, and ordered delivery of messages, allowing systems to interact independently.

Purpose of Message Broker:

• Decouple the sender and receiver so they do not depend on each other in time.
• Provide buffering and storage of messages during the receiver's temporary unavailability.
• Support message routing and filtering.

Examples of popular brokers: RabbitMQ, Apache Kafka.