Semantic guarantees in Kafka need to be understood from the perspective of producers and consumers.
For example, suppose the producer component does not receive successful acks from brokers because of network connectivity. In that case, the producer re-sends those messages even if the broker has received them. This results in duplicate messages sent to the consumer application. Therefore, it is important to understand that the way messages are delivered by the producer effects the manner in which the consumer would receive the messages. This would ultimately have impact on applications...