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rocketmqdeduplistener's Issues

关于业务逻辑与去重表更新操作不在一个原子操作中的问题探讨

大佬，你好，非常感谢你提供的消息幂等处理 Demo！
在阅读你的实现中，我看了下com.github.jaskey.rocketmq.strategy.DedupConsumeStrategy#doHandleMsgAndUpdateStatus 方法，发现业务逻辑和去重表更新操作不在一个原子操作中，如果出现业务逻辑处理成功后没有更新去重表，怎么办？
还是说这个发生的机率很小，是业务允许的范围之内？
就像 RocketMQ 无法保证严格的顺序消息，但普通的顺序消息一般业务能够接收一样？

mysql作为存储数据没有清理

如果使用msyql作为存储方案，缺少删除过期数据的地方啊，这样还需要增加个定时任务，删除过期数据？

消息成功消费后的问题

大佬，你好。我看在DedupConcurrentListener类的consumeMessage方法中若消息全部成功消费只是简单了打印下了log。如果像流程图那样更新消息表状态为成功，那样可能在更新消息表的过程中宕机了，那么还是会出现消息重复的问题吧。请问一般如何解决？

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