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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2022/07/06 08:31:47 UTC

[GitHub] [rocketmq] shengminw commented on issue #4552: Add asySendBlockMode to implement BackPressure

shengminw commented on issue #4552:
URL: https://github.com/apache/rocketmq/issues/4552#issuecomment-1175939893

   > Imo, if there are too many queued tasks, even if the rejection policy is not triggered, the timeout probability of backlog tasks on the client is still very high, because the queuing time is also within the calculation
   
   Yes, after the backpressure mechanism is provided, there will still be timeouts in the case of a large number of requests, but it can be alleviated. 
   Besides, IMO, timeout and rejection directly are different in sematic. Users have set the timeout attribute, so this problem can be foreseen, but the return that is rejected directly is not what the users expect.


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