import asyncio from rstream import Producer STREAM_NAME = "hello-python-stream" # 5GB STREAM_RETENTION = 5000000000 async def send(): async with Producer( host="localhost", username="guest", password="guest", ) as producer: await producer.create_stream( STREAM_NAME, exists_ok=True, arguments={"max-length-bytes": STREAM_RETENTION} ) await producer.send(stream=STREAM_NAME, message=b"Hello, World!") print(" [x] Hello, World! message sent") input(" [x] Press Enter to close the producer ...") with asyncio.Runner() as runner: runner.run(send())