Kafka retries config and performance implications

I am considering setting the retries mechanism to cover for network blips here and there, for which I think if the retries mechanism covers a few mins, say 2-5, that will be enough for minor network issues. As per the answer to this question and the docs the configs to be set are mainly retries, max.in.flight.requests.per.connection (recommended to be set to 1 by kafka), retry.backoff.ms and delivery.timeout.ms.

My concern is that setting max.in.flight.requests.per.connection to 1 might have performance implications? Anyone has experience with that? What is the default number of connnections a kafka producer makes with a broker cluster? I couldn't find something online about it.

https://stackoverflow.com/questions/66095050/kafka-retries-config-and-performance-implications February 08, 2021 at 10:02AM