CNAME or A record?

[Michael Graff]

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On 2011-09-28 9:36 AM, feralert wrote:
> Thanks Jeff,
> 
> But I really only wrote that as an example :) . The real question
> is what is best or what is recommended, two A RR (one for domain,
> one for www) or a single A RR for domain and a CNAME RR for www, is
> one way better than the other or can I choose either way?

Choose either way.  If they are in the same domain, in general it
won't matter all that much.

I personally prefer the address method so each DNS request is smaller
and absolute, but others prefer the CNAME method.

If you cross a zone, however, remember that the address method does
not require additional DNS queries to be sent, while the CNAME method
would.  That said, I believe most CDN type networks require a CNAME as
the addresses a specific user would get varies greatly, so that lookup
is not much of an impact it seems.

- -- 
- --Michael

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