Signal Handling in the Cadence Python Client
· 6 min read
Signals are how the outside world communicates with a running Cadence workflow without interrupting it. Consider a document approval workflow that runs for days or weeks: at any moment, a manager clicks "Approve" on a dashboard and that signal needs to reach the workflow immediately — without restarting it or losing its place. Whether you're building human-in-the-loop approvals, broadcasting configuration changes to thousands of running workflows, coordinating multi-stage pipelines, or implementing liveness checks — signals are the right tool.
Signal handling feature in python client is now available in the latest cadence-python-client release, v0.2.2 — see the v0.2.2 release notes on GitHub and install from PyPI.