is my caching server caching responses to queries from other machines on my LAN?

Barry Margolin barmar at alum.mit.edu
Fri Sep 10 06:54:26 UTC 2004


In article <chr9qi$1o3i$1 at sf1.isc.org>, zast at verizon.net (nic stage) 
wrote:

> i bet there is a better way for me to check what responses were cached
> than just guessing based on dig response times, but i haven't found
> out how.  any help would be greatly appreciated, and i'll look around
> and see if i can help someone else right now too.

"rndc dumpdb" will dump the cache to a text file.

Also, when you use "dig" to query something, look at the TTL.  If it's 
not a nice multiple of 60, there's at least a 95% chance that it came 
from the cache.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***


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