https://www.alibabacloud.com/help/en/apsaramq-for-rocketmq/cloud-message-queue-rocketmq-4-x-series/developer-reference/api-ons-2019-02-14-dir-dead-letter-queues/
Dead-letter queues - ApsaraMQ for RocketMQ - Alibaba Cloud
The `Succeed` state in CloudFlow acts as a terminal state to gracefully end a workflow scope, providing explicit flow control like a `return` statement.
dead letter queuesapsaramqrocketmqalibabacloud
https://www.elastic.co/guide/en/logstash/8.18/dead-letter-queues.html
Dead letter queues (DLQ) | Logstash Reference [8.18] | Elastic
dead letter queues8 18dlqlogstashreference