Live configuration in a FastAPI web server using AsyncConfigWatcher as a lifespan dependency.
AsyncConfigWatcherstarted/stopped via FastAPI lifespanfield.valuein route handlers — always fresh, no polling- Feature flags and server config as separate endpoints
cd examples
make setup
pip install fastapi uvicorn
cd fastapi-integration
python main.pyThen:
curl http://localhost:8000/config
curl http://localhost:8000/featuresChange a value and refresh:
decree config set <tenant-id> features.dark_mode false
curl http://localhost:8000/featuresThis example requires fastapi and uvicorn in addition to opendecree:
pip install opendecree fastapi uvicorn- error-handling — retry, nullable, error hierarchy