The cache TTL for LDAP

I don’t find a settings for the TTL of cache for LDAP, I do believe there is cache time for LDAP connection, we don’t want all the login to hit the LDAP server.
What’s the default setting for the cache TTL or is there a setting to control it?

opendistro_security.cache.ttl_minutes: 60 # default

Thanks a lot @Aleksei .