What are the main components of a messaging system?

beginner

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Core components:

Producer/Publisher: Creates and sends messages
Consumer/Subscriber: Receives and processes messages
Message Broker: Middleware that routes messages between producers and consumers
Queue/Topic: Storage mechanism for messages
Message: The actual data being transmitted
Additional components:
Exchange: Routes messages to appropriate queues (in systems like RabbitMQ)
Dead Letter Queue: Stores messages that couldn't be processed
Connection/Channel: Network connections and logical channels for communication

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