[nsd-users] reloading NSD zone configuration

[Aaron Hopkins]

On Wed, 27 May 2009, Greg A. Woods wrote:
> Don't try to trigger reloads on customer demand -- do regular rolling
> reloads every 20 minutes or so (thus the suggested 30-minute SLA).

Regular rolling reloads every 20 minutes with an optimistic 15 seconds of
downtime (with a ton of zones) per reload yields a best-case SLA per
nameserver at 98.75%.  Sure there's redundancy, but 1.25% of all lookups
still result in a 3 second stall.

I won't choose to drop any packets in normal operation.  If your users are
happy with you doing so, great.  Mine aren't.

                                     -- Aaron