We revisit our previous benchmark, where Kafkorama scaled vertically on a single node to deliver 1 million messages per second to 1 million WebSocket clients in real time (with a median latency of 3 ms). In this new benchmark, we replace the single Apache Kafka® broker used previously with a production-ready Kafka service provided by Confluent Cloud. The results show nearly identical performance, with end-to-end latency increasing by only 2 ms at the median and 3 ms at the 75th percentile, while latency stability remains unchanged.
