> Kafka and the like are clearly message buses and though they might also technically qualify as a DB ksqldb is actually a database on top of this. The thing

> Kafka and the like are clearly message buses and though they might also technically qualify as a DB ksqldb is actually a database on top of this. The thing is that they have an incrementally updated materialized view that is the table, while the event stream is similar to a WAL ("ahead of write logs?" in this case). Because eventually you can't just go over your entire history for every query.