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MichaelDrogalis / onyx


Distributed, masterless, high performance, fault tolerant data processing


Logo Onyx

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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, 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


Available on Clojars:

[org.onyxplatform/onyx "0.10.0-beta3"]

Plugins and Libraries


Supported Plugins:


onyx-seq is now included with onyx core. See onyx.plugin.seq and onyx.tasks.seq.


onyx-core-async has some breaking changes described in changes.


onyx-kafka should work without issues.


onyx-datomic should work without issues.


onyx-amazon-sqs should work without issues.


onyx-amazon-s3 should work without issues.


onyx-bookkeeper should work without issues.


onyx-metrics currently only supports JMX metrics reporting. There are some breaking changes with respect to use. See README


onyx-peer-http-query now supports an onyx-metrics endpoint at "/metrics" which is compatible with prometheus. Simply enable onyx-metrics and your metrics will be reported to JMX.


An 0.10.0 compatible onyx-dashboard release is available

Plugin Use

To use the supported plugins, please use version coordinates such as [org.onyxplatform/onyx-amazon-sqs ""], and read the READMEs on the 0.10.x branches linked above.

Currently Unsupported

Build Status

Component release unstable compatibility
onyx core Circle CI Circle CI -
onyx-kafka Circle CI Circle CI Circle CI
onyx-kafka-0.8 Circle CI Circle CI Circle CI
onyx-datomic Circle CI Circle CI Circle CI
onyx-redis Circle CI Circle CI Circle CI
onyx-sql Circle CI Circle CI Circle CI
onyx-bookkeeper Circle CI Circle CI Circle CI
onyx-seq Circle CI Circle CI Circle CI
onyx-durable-queue Circle CI Circle CI Circle CI
onyx-elasticsearch Circle CI Circle CI Circle CI
onyx-amazon-sqs Circle CI Circle CI Circle CI
onyx-amazon-s3 Circle CI Circle CI Circle CI
onyx-http Circle CI Circle CI Circle CI
learn-onyx Circle CI - Circle CI
onyx-examples Circle CI Circle CI Circle CI
onyx-dashboard Circle CI Circle CI Circle CI
onyx-metrics Circle CI Circle CI Circle CI
onyx-peer-http-query Circle CI Circle CI Circle CI
  • release: stable, released content
  • unstable: unreleased content
  • compatibility: edge, unstable, unreleased content depending on core master

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 0.10.0-beta3

Developer's Guide 0.10.0-beta3

API Docs 0.10.0-beta3

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 0.10.0-beta3.0-SNAPSHOT goes with onyx version 0.10.0-beta3). Fixes to plugins can be applied using a 4th versioning identifier (e.g. 0.10.0-beta3.1-SNAPSHOT).

Generate plugin templates through Leiningen with onyx-plugin.

3rd Party plugin listing

Unofficial plugins have not been vetted.

Offical Dashboard and Metrics

You can run a dashboard to monitor Onyx cluster activity, found here. Further, you can collect metrics and send them to the dashboard, or anywhere, by using the onyx-metrics plugin.

Need help?

Check out the Onyx Google Group.

Want the logo?

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 © 2015 Michael Drogalis

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



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