[lovelearning]

I didn't understand why author used Redis for the final delivery, when a Kafka cluster was already available. Is there a reason to use Redis here?

[rwalk333]

The author here. I used Redis because I needed a simple way to have users subscribe to and follow many different search queries. In Kafka, this would mean maintaining a very large number of lightly populated topics. As I understand it, that isn't a good way to use Kafka.

[latenightcoding]

I had the same doubt thanks for clarifying