Dead Letter Queue
/ded ˈletər kjuː/
Definition
A message queue that receives messages which failed processing after the maximum retry limit.
Example in context
"Failed payment events go to the DLQ — we alert if more than 5 messages accumulate in an hour."
Related terms
Practice this term
Master Dead Letter Queue in context by working through exercises in the Software Architecture module. You'll see the term used in real engineering scenarios with multiple-choice, fill-in-the-blank, and matching drills.