What Is Deadletter Queue? RRS feed

All replies

  • Hi,

    From Wikipedia:

    In message queueing the dead letter queue is a service implementation to store messages that meet one or more of the following criteria:

    1. Message that is sent to a queue that does not exist.
    2. Queue length limit exceeded.
    3. Message length limit exceeded.
    4. Message is rejected by another queue exchange.
    5. Message reaches a threshold read counter number, because it is not consumed. Sometimes this is called a "back out queue".


    Best regards,

    Blog: LinkedIn:

    • Edited by Leon Laude Friday, October 30, 2020 12:21 PM
    Friday, October 30, 2020 12:21 PM
  • Messages are placed on the deadletter sub-queue by the messaging system in the following scenarios.

    ► When a message expires and deadlettering for expired messages is set to true in a queue or subscription.

    ► When the max delivery count for a message is exceeded on a queue or subscription.

    ► When a filter evaluation exception occurs in a subscription and deadlettering is enabled on filter evaluation exceptions.

    Friday, October 30, 2020 12:36 PM