That's a good question.

First of all, Kafka is still an event streaming platform and lacks database capabilities such as indexing and query optimization. Although ksql/Kafka Streams can perform computations based on consuming data, they require repeatedly pulling data, and there are no technologies like indexing to accelerate queries.

Secondly, dashboards and alerts in monitoring scenarios require a large number of views—these are the “known unknowns”. When dealing with “unknown unknowns” during exploration, it’s necessary to create views dynamically, which may result in a significant increase in the number of views. I’m not sure whether Kafka can handle such situations. Because monitoring requires greater real-time performance, it’s difficult to tolerate delays.