Concurrent problem with many micro-service instances about cap HOT 6 CLOSED

I think there will be no this problem, when multiple subscribers subscribe to the same topic's message, so they will be in the same group, Message Queue are responsible for will only push message to one of them.

Are you doing the test and occur this problem?

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I have found this situation would happen.It can be re recurrent.
First I start two micro-service instances that subscribed same message name and two different message group.
Next publish a message with same name and two different group .
Then problem appeared.

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The different groups will all receive the same message this is expected, the same group will only receive once.
The message routing as below:

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@yuleyule66 If a service consists of many instances, updating message's status will cause an exception, for example: should affect 1 row but affected 0 row actually

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@HongyanShen Are you using Entity Framework?

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communicate with QQ , Closed !

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