nscd and DNS cache

[JD]

On 05/16/2012 03:33 AM, Ed Greshko wrote:
> On 05/16/2012 04:27 PM, JD wrote:
>> I have used dnsmasq as well, and communicated with it's author
>> a couple of years ago.
>> But as I recall, it did not seem to help much, as I observed that
>> browsing to a website with just a couple of minutes lapse time,
>> FF showed on the status line it was  looking up the domain.
>> Perhaps the cache expiry was set to a very short  time?
>>
>>
> 2 things may be coming into play.....
>
> 1st it "could" be that there is a cache time setting in dnsmasq.
>
> 2nd the owners of a domain, and by definition, who control the settings of the master
> DNS server for their domains set up a TTL for their records.  If they set this to a
> low value you may see this problem.  As a mater of fact, I've seen cases where the
> TTL has been set to as low as 300 seconds.
Interesting point. Hard to believe that  most domain controllers would that.
Must be a small  percentage?