Comment by barrkel

Think of Kafka as a replayable append-only log. It's tuned for ingestion of enormous quantities of data; it's best at buffering big data, or perhaps as an infinitely growing log of everything that happens in a system, than simply communication in a distributed system. It doesn't have back pressure and its namespacing is primitive (ie DIY with prefixes, and avoid Confluent libraries that assume they're the only client in the system).