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@Nevon @[iklotzko](https://github.com/iklotzko) Dear guys, I met the similar problem. Env： EC2(client): 4u8g, nodejs v14.17.6，kafkajs：1.15.0 If I set ack=1, the next request will be blocked until kafka leader response, that will...

Thanks for your reply. I think i should try : 1. set ack=1 to enable backpressure 2. seprate the async sending kafka msg business from the core. 3. lower the...