RabbitMQ Expired TTL Message don't get into Dead Letter Exchange

Question

i want to achieve that a message can only be consumed in 60 seconds. That way i have two Queues:

worker

Gets consumed but never directly published.

Arguments:

• durable: true

Bound to exchange worker (type = direct).

scheduler

Gets published but never consumed.

Arguments:

• x-dead-letter-exchange: worker
• x-message-ttl: 2000
• durable: true

Bound to exchange scheduler (type = direct).

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When i send a message to scheduler it appears for 2 seconds, then disappears - as expected.

What i would expect next, is, that the message pops up in the worker queue, but isn't appearing.

I'm not binding a routing key or anything else.

Question: Why don't expired messages get re-published in the dead letter exchange?

Answer 1

Dead-Letter Exchange is an exchange, you need to bind the worker queue to the DLX with a suitable policy for the messages that are dead-lettered to land in the worker queue.