Quarantine Messages That Always Fail

A message that fails because of its own content will fail every time it is retried, and a retry loop that never gives up lets one bad message consume a worker slot forever while the queue behind it grows. This skill covers poison message handling: count attempts per message rather than per queue, separate a transient failure from one that will never change, set the message aside after a fixed number of attempts with the payload and the last error kept, alert so the cause can be fixed, and offer an explicit replay once it is.

Commands