Big DNS server

I have a dns server that handles all DNS for my webservers. Now i have a small problem. Since a lot of domains are in this server each restart is taking a long time now. Named is reloading all domains then
I have to do this at least every hour because new added domains have to be included in named. (to load the adjusted named.conf)
Is there a way that it doesn't take such a long time, and it only loads new domains?? If i edit the named.conf without a restart of bind i assume it will not include the domain.

The problem with the reload is that dns is offline for some time, also the logs are flooded with the reload messages.

 

 

 

 

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