On 2021/01/08 10:00, Piotr Nowojski wrote:
Moreover I don't think there is a way to implement exactly once producer without some use of transactions one way or another.
There are some ways I can think of. If messages have consistent IDs, we could check whether a message is already in Kafka before writing it. That way, you could achieve exactly-once semantics with an "at-least-once" system.
I'm not saying that it would be good, or high-performance, but I think there are ways. 😅
Best, Aljoscha
