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RabitMq Direct Exchange Creation and configuration

A direct exchange delivers messages to queues based on a message routing key. The routing key is a message attribute added into the message header by the producer. The routing key can be seen as an "address" that the exchange is using to decide how to route the message. A message goes to the queue(s) whose binding key exactly matches the routing key of the message. The direct exchange type is useful when you would like to distinguish messages published to the same exchange using a simple string identifier. The default exchange AMQP brokers must provide for the direct exchange is "amq.direct".