[Request for commnets] why mod_ldap uses calloc & free instead of creating subpool for cache management???

[Sadaf Alvi]

i saw util_ldap_cache to know from which pool it is allocating cache memory. i wonder to know that it is using util_ldap_cache_mgr which in turn using calloc & free internally. why it is not using pconf pool  to allocate cache memory?? is there any memory or performance issue ??