Important: This release is a developer preview and is free and open-source from Confluent under the Apache 2.0 license. Do not run KSQL against a production cluster.

KSQL is an open source streaming SQL engine for Apache Kafka. It provides a simple and completely interactive SQL interface for stream processing on Kafka; no need to write code in a programming language such as Java or Python. KSQL is open-source (Apache 2.0 licensed), distributed, scalable, reliable, and real-time. It supports a wide range of powerful stream processing operations including aggregations, joins, windowing, sessionization, and much more.

Click here to watch a screencast of the KSQL demo on YouTube.

If you are ready to see the power of KSQL, try out these:

• KSQL Quick Start: Demonstrates a simple workflow using KSQL to write streaming queries against data in Kafka.
• Clickstream Analysis Demo: Shows how to build an application that performs real-time user analytics.

You can find the KSQL documentation here.

Whether you need help, want to contribute, or are just looking for the latest news, you can find out how to connect with your fellow Confluent community members here.

• Ask a question in the #ksql channel in our public Confluent Community Slack. Account registration is free and self-service.
• Join the Confluent Google group.

Contributions to the code, examples, documentation, etc, are very much appreciated. For more information, see the contribution guidelines.

• Report issues and bugs directly in this GitHub project.

The project is licensed under the Apache License, version 2.0.

Apache, Apache Kafka, Kafka, and associated open source project names are trademarks of the Apache Software Foundation.