Re: [cobalt-users] DNS

[flash22@xxxxxxx]

On Mon, 9 Apr 2001, Todd Woolums wrote:

> Just curious of how much bandwidth is taken by DNS.  I am going to take 
> care of the DNS for my clients my just curious of how much it will 
> take.  Estimate......

almost nothing ... the average dns query fits in a single packet...
say 1K, and the client caches it and doesn't ask for it again for a
while...so say you have 30 sites and 100 (different) people a day look at
each site, your talking 3meg/day (vs say 10-1000 times that for the web
data that would go along with it)

obviously, the actual amount depends on lots of things, number of
domains, other services causing dns queries....

if you do web statistics, you might actually average less bandwith btw,
resolving reverse using your own nameserver instead of passing it all out
to another nameserver saves a little bandwith...sometimes...

A different question tho is latency, running dns behind a slow link will
add a delay to every dns query , which will add it to any access to the
server...

gsh