Hello,
We have a number of different scenarios within our company that we are considering Kafka for. There is one case in particular that has caused debate. The relevant characteristics are: - Very high throughput - 1000's of messages/second. - Very bursty traffic with unpredictable surges in requests from external sources. - Management of long running request/response sessions. - In Kafka terminology the producer that issues a request must also be the consumer for the response. - Very short message validity - If a response is not received within a few seconds then the request is invalid. - The consumers of the requests need per-request interaction with a database, introducing further sources of latency and unpredictable processing rate. Not everyone is convinced Kafka is a good choice for this particular case. There are others - such as the backbone for post-processing of TB of transaction records - where everyone agrees Kafka would be useful. I'd be very grateful for any feedback. Thanks! HJ Sent from [ProtonMail](https://protonmail.ch), encrypted email based in Switzerland.
