If we have multiple users in our organization and do these users expire from the LDAP pre-cache?
The parameter which helps you define these setting is "max_users_to_precache " in the limits.conf, by default the value will be 1000 and yes the users expire from the LDAP pre-cache.
We can increase or decrease the value of the max_users_to_precache by which we can restrict them from the expire of the LDAP pre-cache.