Before answering your questions, I wonder why you ask those questions - probably add a bit more context would help. #2 is straightforward that you can use SMA requestor management screen to check. For #1 and #2, they are related to how user session is managed in prpc. We use cookie-based persistence in a normal enterprise setup, please read this guide: https://pdn.pega.com/documents/pega-72-high-availability-administration-guide (never mind the version, I just sent you the latest one but concepts are the same).