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This repo contains the source code of the Cadence server and other tooling including CLI, schema tools, bench and canary.

You can implement your workflows with one of our client libraries. The Go and Java libraries are officially maintained by the Cadence team, while the Python and Ruby client libraries are developed by the community.

You can also use iWF as a DSL framework on top of Cadence.

See Maxim's talk at Data@Scale Conference for an architectural overview of Cadence.

Visit cadenceworkflow.io to learn more about Cadence. Join us in Cadence Documentation project. Feel free to raise an Issue or Pull Request there.

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Getting Started

Start the cadence-server

To run Cadence services locally, we highly recommend that you use Cadence service docker to run the service. You can also follow the instructions to build and run it.

Please visit our documentation site for production/cluster setup.

Run the Samples

Try out the sample recipes for Go or Java to get started.

Use Cadence CLI

Cadence CLI can be used to operate workflows, tasklist, domain and even the clusters.

You can use the following ways to install Cadence CLI:

Cadence CLI is a powerful tool. The commands are organized by tabs. E.g. workflow->batch->start, or admin->workflow->describe.

Please read the documentation and always try out --help on any tab to learn & explore.

Use Cadence Web

Try out Cadence Web UI to view your workflows on Cadence. (This is already available at localhost:8088 if you run Cadence with docker compose)

Contributing

We'd love your help in making Cadence great. Please review our contribution guide.

If you'd like to propose a new feature, first join the Slack channel to start a discussion and check if there are existing design discussions. Also peruse our design docs in case a feature has been designed but not yet implemented. Once you're sure the proposal is not covered elsewhere, please follow our proposal instructions.

Other binaries in this repo

Bench/stress test workflow tools

See bench documentation.

Periodical feature health check workflow tools(aka Canary)

See canary documentation.

Schema tools for SQL and Cassandra

The tools are for manual setup or upgrading database schema

The easiest way to get the schema tool is via homebrew.

brew install cadence-workflow also includes cadence-sql-tool and cadence-cassandra-tool.

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License

MIT License, please see LICENSE for details.