[asavinov]

For stateful processing you need something like:

* https://kafka.apache.org/documentation/streams/ - Kafka Streams (and its KTable)

* https://flink.apache.org/ - Flink

* https://spark.apache.org/streaming/ - Spark Streaming

* https://github.com/asavinov/bistro - Bistro Streams

The focus of Benthod seems to be performance and resilience (implemented without persistence).

[spooneybarger]

Or to toot the horn of the project I work on:

* https://github.com/wallaroolabs/wallaroo - Wallaroo