Retry

Retry is the attempt to reprocess a message after a failure, based on the premise that the error might be transient (a momentarily unavailable database, a network timeout) and that a new attempt, maybe seconds or minutes later, has a chance of succeeding. Best practice is to use exponential backoff (the interval between attempts grows with each failure) and a maximum retry limit, after which the message is routed to a DLQ instead of being retried indefinitely.