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Can this result be improved?
02-07-2011, 11:27 PM
Post: #7
RE: Can this result be improved?
I don't have a lot of experience with various DNS providers, just look for one that uses an Anycast network and has servers close to your customers (DYN and Ultra are the bigger players that I'm aware of, I'm using DNS Made Easy but mostly because they're cheap :-) ).

If your base HTML pages are also going to be served by a CDN then you don't have to worry about a DNS provider, just make sure the CDN provider you select has a good DNS architecture as well (scary as it is, the largest CDN provider doesn't use Anycast for their DNS so resolution performance can vary quite wildly).

A static IP could still help, even when using something like maxcdn (I believe they offer it as an option either through maxcdn or their netdna offerings) because it will eliminate one of the steps in the lookup (CNAME->A record).

That said, this is all on the REALLY extreme side of optimizing. If the site is going to be more than just static files with each page being a single request then there's going to be a lot more low-hanging-fruit than optimizing the DNS architecture - the DNS will only buy you a few ms on a single request (more if the existing DNS is not great and uncached like it was in the test you ran).

Here is the record I get using nslookup (d2 debug level):

Got answer (93 bytes):
HEADER:
opcode = QUERY, id = 25, rcode = NOERROR
header flags: response, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 1, additional = 0

QUESTIONS:
http://www.jesseo.com, type = AAAA, class = IN
AUTHORITY RECORDS:
-> jesseo.com
type = SOA, class = IN, dlen = 49
ttl = 60 (1 min)
primary name server = ns1.dreamhost.com
responsible mail addr = hostmaster.dreamhost.com
serial = 2011020200
refresh = 16206 (4 hours 30 mins 6 secs)
retry = 1800 (30 mins)
expire = 1814400 (21 days)
default TTL = 14400 (4 hours)
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Messages In This Thread
Can this result be improved? - JesseG - 02-05-2011, 01:18 AM
RE: Can this result be improved? - pmeenan - 02-05-2011, 01:32 AM
RE: Can this result be improved? - Geebee - 02-05-2011, 01:48 AM
RE: Can this result be improved? - JesseG - 02-06-2011, 06:29 AM
RE: Can this result be improved? - JesseG - 02-07-2011, 11:01 PM
RE: Can this result be improved? - pmeenan - 02-07-2011 11:27 PM
RE: Can this result be improved? - JesseG - 02-09-2011, 12:45 AM
RE: Can this result be improved? - pmeenan - 02-09-2011, 12:56 AM
RE: Can this result be improved? - sajal - 02-11-2011, 12:52 AM

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