Is it fully async and non-blocking?

[stephanecollot]

Hello,

I'm currently using aioprometheus in a FastAPI Uvicorn app, but the metric exposure is blocking all the routes:
claws/aioprometheus#98

Looking at the official client, it seems that they added async ASGI metric exposure. But I don't know if their metrics update will then be blocking. I didn't try it yet.
See prometheus/client_python#512

So I would like to know if prometheus-async is non-blocking for metrics update and metrics exposure, i.e. these two operations won't block execution of other HTTP requests.

[hynek]

What do you understand under "blocking" exactly? In the context of async, we usually call things blocking that block on I/O. Purely computational overhead is not considered blocking.

Without double-checking, I suspect our start_http_server_in_thread should do what you're asking for?

[hynek]

oh and see #13!