URL:
https://github.com/SSSD/sssd/pull/418
Title: #418: CACHE_REQ: Copy the cr_domain list for each request
pbrezina commented:
"""
It is a valid approach and I don't have a problem with that. However, number of domain
may be rather high so it would be better to use reference counter.
"""
See the full comment at
https://github.com/SSSD/sssd/pull/418#issuecomment-338164976