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Logo Onyx

A fork of onyx-platform/onyx updated to run with JDK-21

Installation (locally):

lein install

Include in project:

Available on Clojars

Insert this line into your project.clj if using Leiningen.

[com.github.clojure-finance/onyx "0.1.0"]

Changes made:

Updated dependencies and renamed internal components and fixed certain tests

Join the chat at

What is it?

  • a masterless, cloud scale, fault tolerant, high performance distributed computation system
  • batch and stream hybrid processing model
  • exposes an information model for the description and construction of distributed workflows
  • Competes against Storm, Flink, Cascading, Cascalog, Spark, Map/Reduce, Sqoop, etc
  • written in pure Clojure

What would I use this for?

  • Realtime event stream processing
  • CQRS
  • Continuous computation
  • Extract, transform, load
  • Data transformation à la map-reduce
  • Data ingestion and storage medium transfer
  • Data cleaning


Changelog can be found at

Quick Lookup Doc

A searchable set of documentation for the Onyx data model is available.

Project Template

A project template can be found at onyx-template.

Plugins and Libraries

Plugin Template

We provide a plugin template for use in building new plugins. This can be found at onyx-plugin.

Plugin Use

To use the supported plugins, please use version coordinates such as [org.onyxplatform/onyx-amazon-sqs "0.14.6.SNAPSHOT.0"], and read the READMEs on the 0.14.x branches linked above.

Build Status

onyx coreCircle CICircle CI
onyx-local-rtCircle CICircle CI
onyx-kafkaCircle CICircle CI
onyx-datomicCircle CICircle CI
onyx-redisCircle CICircle CI
onyx-sqlCircle CICircle CI
onyx-bookkeeperCircle CICircle CI
onyx-amazon-sqsCircle CICircle CI
onyx-amazon-s3Circle CICircle CI
onyx-httpCircle CICircle CI
learn-onyxCircle CI-
onyx-examplesCircle CICircle CI
onyx-peer-http-queryCircle CICircle CI
lib-onyxCircle CICircle CI
onyx-pluginCircle CICircle CI
onyx-templateCircle CICircle CI
  • release: stable, released content
  • unstable: unreleased content

Unsupported plugins

Some plugins are currently unsupported in onyx 0.14.x. These are:

Companies Running Onyx in Production


Quick Start Guide

Feeling impatient? Hit the ground running ASAP with the onyx-starter repo and walkthrough. You can also boot into preloaded a Leiningen application template.

User Guide 0.14.6

Developer's Guide 0.14.6

API Docs 0.14.6

Code level API documentation can be found here.

Official plugin listing

Official plugins are vetted by Michael Drogalis. Ensure in your project that plugin versions directly correspond to the same Onyx version (e.g. onyx-kafka version goes with onyx version 0.14.6). Fixes to plugins can be applied using a 4th versioning identifier (e.g.

Generate plugin templates through Leiningen with onyx-plugin.

3rd Party plugin listing

Unofficial plugins have not been vetted.

Need help?

Check out the Onyx Google Group.

Feel free to use it anywhere. You can find a few different versions here.

Running the tests

A simple lein test will run the full suite for Onyx core.

Contributor list


Some code has been incorporated from the following projects:


Copyright © 2017 Michael Drogalis

Distributed under the Eclipse Public License, the same as Clojure.

Can you improve this documentation? These fine people already did:
Lucas Bradstreet, Michael Drogalis, Leon Mergen, Karanveer Singh, David Rupp, Andrea Crotti, KARASZI István, Jason Bell, Bridget Hillyer, Gardner Vickers, The Alchemist, The Gitter Badger & Owen Jones
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