Kaskada – modern, open-source event processing

In plain words

Kaskada is an open-source event-processing engine built with Rust and Apache Arrow. It provides a declarative query language designed for analyzing events in both bulk and real-time contexts. Unlike SQL, aggregations produce timelines showing values at each point in time as events occur. The language supports composable syntax with nested aggregations, event shifting, time-based ticks, and temporal joins. It's built for developers who need to reason about event streams with precise temporal semantics.

written from the facts on this page · September 2026

From the sources

Modern, open-source event-processing. Contribute to datastax-archive/kaskada development by creating an account on GitHub.

In the maker’s words, at launch

We recently open-sourced Kaskada – an event-processing engine built on Rust and Apache Arrow. It features a high-level, declarative query language designed specifically for reasoning about events in bulk and in real time. Unlike SQL, an aggregation over events produces a timeline indicating the value at each point in…

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