New ask Hacker News story: Ask HN: Am I abusing Kafka? If yes, then what are the alternatives?

Ask HN: Am I abusing Kafka? If yes, then what are the alternatives?
3 by sandipghane | 1 comments on Hacker News.
I want to develop notification services that handle all events specific to users, such as mentions. I chose Kafka to process these notification events. I've created user-specific topics and publish all notification events on their respective topics. My challenge is how to manage user notification history. For instance, if a user wants to retrieve all read or unread notification events, can I distinguish between them on Kafka, or should I store all notification events in a database to differentiate between read and unread events?