Fluvio Stateful Service Development Kit is in Dev Preview. State operations, windows are part of SSDK.

A decent analog for Fluvio the core functionality of Kafka + Flink + Airflow. Distributed streaming + stateful stream processing + workflow orchestration.

Arroyo and Flink are great stream processing engines with SQL interfaces. Flink is more mature and Arroyo is fast and light since it is written in Rust.

The 2 key differences are: - The implementation of Fluvio SSDK is using the wasm component model, which natively enables polyglot interfaces. Fluvio operates using YAML to express schema, operators, state, and windows. - Fluvio SSDK provides a scaffolding for composing end to end event streaming flows in a single composable paradigm to reduce context switching and make the process of development simpler and uniform.