Aias00 opened a new issue, #989:
URL: https://github.com/apache/rocketmq-dashboard/issues/989

   ## Problem
   Message queries and DLQ resend scans create short-lived RocketMQ clients 
with instance names based only on System.currentTimeMillis(). Concurrent 
requests in the same millisecond can create the same client identity within a 
shared consumer or producer group.
   
   ## Expected
   Short-lived clients use collision-resistant instance names while remaining 
diagnosable.
   
   ## Acceptance criteria
   - Concurrent creations cannot share an instance name.
   - The change applies to message-query and DLQ consumer and producer paths.
   - Tests verify uniqueness without relying on clock delays.


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