How would you use TCP sockets to de-duplicate Kafka streams with a many-to-many communication pattern? Surely there is a valid scalability reason for why AWS Io

How would you use TCP sockets to de-duplicate Kafka streams with a many-to-many communication pattern? Surely there is a valid scalability reason for why AWS IoT only provides "at least once" guarantees in their MQTT broker even when TCP is the underlying transport [1]. [1] http://docs.aws.amazon.com/iot/latest/developerguide/protocols.html#mqtt http://docs.aws.amazon.com/iot/latest/developerguide/protoco...