@teajaygrey@rap.social back when we were still using #BerkeleyDB, on a 5M user DB, #OpenLDAP authentication rates were over 2 orders of magnitude faster than ActiveDirectory on the same hardware and OS. (Even faster than that with OpenLDAP on Linux vs Windows too.) https://web.archive.org/web/20071214114023/http://connexitor.com/blog/pivot/entry.php?id=185#body They've only gotten slower, while our transition to #LMDB got even faster...