BIND deferred reload time DNSadmin question

Could any one clarify below query?

Under Tweak Settings
=================
BIND deferred reload time
This setting allows you to specify the time (in seconds) that the dnsadmin service waits before it restarts BIND. The system silently discards additional restart requests in this time period

Actually could you explain a bit more on dnsadmin service. Does this service restart BIND only on DNS modifications? ,
also it goes to dormant mode (inactive/idle , to save RAM ). As far as I know that via terminal we could modify zone records and use either rndc or named restarts ( depending on how many domains zones exist, mange local /remote.. ) , while dnsadmin service is been monitored and triggered by chkservd too.

so where does dnsadmin comes into play? after a zone modify can I use the dnsadmin resart script , or does this benefits more on a dnsonly server?

Please clarify?

/usr/local/cpanel/etc/init/scripts/systemd/cpanel/dnsadmin.service
/usr/local/cpanel/whostmgr/bin/dnsadmin


grep dnsadmin /etc/chkserv.d/chkservd.conf
dnsadmin:1

 

Hello ,

thanks for the reply , it's a template answer. could you Please make it more clear as per my initial question.