TCP will only slow down the writer if the network or the Kafka broker can't keep up. It the Kafka consumer can't keep up, their backlog will grow unhindered unt

TCP will only slow down the writer if the network or the Kafka broker can't keep up. It the Kafka consumer can't keep up, their backlog will grow unhindered until Kafka runs out of disk space. I wish there was an easier built in way to do it, but a producer could read the backlog length of it's consumers and try to throttle itself.