We have a couple of services in production at the company I work with, served with granian, they handles ~5k RPM traffic each (not so much) with no particular issues.
You can consider the ASGI support quite robust for the current version, WSGI was introduced in 0.2.0, so it might still suffer from bugs. RSGI is quite new as a protocol, so next versions might introduce breaking changes (but the RSGI specification has a version, so you can stick with a specific revision), at least until version 1.0 will be ready.
We have a couple of services in production at the company I work with, served with granian, they handles ~5k RPM traffic each (not so much) with no particular issues.
You can consider the ASGI support quite robust for the current version, WSGI was introduced in 0.2.0, so it might still suffer from bugs. RSGI is quite new as a protocol, so next versions might introduce breaking changes (but the RSGI specification has a version, so you can stick with a specific revision), at least until version 1.0 will be ready.