replicate a whole master

[Tony Finch]

/dev/rob0 <rob0 at gmx.co.uk> wrote:
>
> If you're thinking that you can do this replication to improve DNS
> performance, you're right, it will do that.  But it certainly will
> not scale (if it's even possible to get axfr/ixfr), and it won't
> handle modern CDN systems properly.

BIND 9.10 and later will keep popular domains in the cache by prefetching
them if they are looked up shortly before they will expire. So trying to
keep local copies of popular zones is less helpful than it used to be.

(Unfortunately the prefetch option isn't mentioned in the HISTORY file so
I had to dig through the CHANGES to remind myself when it was introduced!)

Tony.
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