messaging - Ensure delivery of message, RabbitMq -


i know common approach create consumers queue before publishing message, seems pretty tight coupling going on here, don't want know how many queues consuming exchange , how messages each of them get, how can preserve reliability while decoupling server consumer?

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on image client-app still needs know if there server queues available process auth request. because if there no queues message dead lettered, don't believe no 1 ever though this? or presume queues exists (they durable)?

the way rabbitmq , amqp 0.9.1 in general works not couple sender of message consumer. can query exchange using many different methods find out queues bound it, @ time send message never sure available unless create queue , binding yourself.

1 way can check sure message not placed onto queue use publisher confirms. possible asynchronous way listen notification on standard rabbitmq logging exchange message dlq'd.


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