I'm curious what type of batching Kafka producers do at the socket layer. For instance, if I have a partitioner that round robin's n messages to a different partition, am I guaranteed to get n different messages sent over the socket or is there some micro-batching going on underneath?
I am trying to understand the semantics of the default partitioner and why it sticks to partitions for 10 minutes. If I were to lower that interval to 1sec, would I acheive better batching that I would if I was to completely round-robin each message to a different partition?
