FS2-Kafka: Functional Kafka Streams for Scala

Latest version License Discord

Getting started

For the latest stable version, see the badge at the top of this page. If your project uses cats-effect 2 you should instead use the latest release from the 1.x series.

Version matrix

fs2-kafka scala cats-effect/fs2 kafka-clients status
3.x 2.12, 2.13, 3.3+ 3.x 3.x Current
2.x 2.12, 2.13, 3.2+ 3.x 2.x End-of-life
1.x 2.12, 2.13, 3.2+ 2.x 2.x End-of-life

For further details, see the microsite.



Pull requests and feedback are welcome. Pull requests should usually target the series/3.x branch.


FS2-Kafka is used in production by a number of companies, including:

Code of conduct

All participants are expected to follow the Scala Code of Conduct.