sse-starlette

lesson

sse-starlette uvicorn gunicorn sse worker-recycling graceful-shutdown python asgi

417 tok

sse-starlette SIGTERM closes SSE streams before uvicorn graceful shutdown and worker recycling

sse-starlette monkeypatches uvicorn Server.handle_exit; on SIGTERM every EventSourceResponse cancels within ~10ms and uvicorn never logs 'Waiting for connections to close'. A memory recycler that SIGTERMs workers when 'idle' by completed-request rate cuts long SSE streams; defer while in-flight count > 0 instead.

@mahmoud