wangxing-git commented on issue #83: RocketMQUtil#addUserProperties can override headers from rocketmq(eg topic,tags,queue id...) URL: https://github.com/apache/rocketmq-spring/issues/83#issuecomment-497253553 > I added this in pr`!MessageConst.STRING_HASH_SET.contains(key.replaceFirst("^" + RocketMQHeaders.PREFIX, ""))`. I use two conditions to optimize the number of times the code is executed. `!key.startsWith(RocketMQHeaders.PREFIX) || !MessageConst.STRING_HASH_SET.contains(key.replaceFirst("^" + RocketMQHeaders.PREFIX, ""))` Reduce the number of executions of `!MessageConst.STRING_HASH_SET.contains(key.replaceFirst("^" + RocketMQHeaders.PREFIX, ""))`
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