Does Suro have replay functionality?

[0xgeert]

I apologize upfront, since this isn't an issue but a question. I couldn't find a better forum to ask this.

Basically, I'd like to know if Suro could be used for evensourcing.

For this Suro would need replay functionality, which would enable crashes consumers (or new consumers) to catch-up on passed events.

Some time ago I asked a question on SE if Kafka could be used for this (answer would be yes coming from one of the Kafka authors)

At quick glance Suro and Kafka seem to be similar. Yet in the Suro introduction article they are used side-by-side.

Perhaps I'm missing the difference in usecases for Suro vs Kafka? Thanks

[metacret]

@gebrits Sorry for late response, I am not sure why I didn't get an email about this issue.

Anyway, the major difference between suro vs kafka is its data model and distribution model. Kafka is close to the queue rather than data pipeline. To fetch the data, you need to implement consumer instead of simple routing configuration which is possible in suro. Replay in kafka can be easily done because its queueing model with offset management but suro is stateless machine, whose responsibility is route messages as fast as possible.