Yum repo and subscription authentication

I am looking for two pieces of information.
the first is about a baseline of performance for yum. I have a repository server but I have been asked about the expected metrics and expected load, I have not been able to find any kind of information on Red Hat site.

The second is about subscription manager. I got the list of IPs and domains that Red Hat has for the subscription manager and CDN, what I am missing though is the version of TLS in use. If I open https://cdn.redhat.com I see tlsv1 with sha1 hashing algo. Additionally, authentication between servers and CDN is done via private certificates provided by the Redhat entitlement PKI and then used as authentication between CDN and subscripted systems.

Thank you for any help,