Cotyledon

Cotyledon is a Python framework (version 2.2.0, actively maintained) designed for defining and managing long-running services. It provides robust handling of Unix signals, efficient spawning and supervision of worker processes, daemon reloading capabilities, `sd-notify` integration, and rate limiting for worker restarts. It sees significant use in OpenStack Telemetry projects as a lightweight replacement for `oslo.service`, which carried heavy `eventlet` dependencies. The library aims for a consistent code path for single and multiple worker configurations and offers advanced reload and termination APIs.