How to handle short TTLs?

Kevin Darcy kcd at
Thu Oct 7 19:20:12 UTC 2004

Gary Mills wrote:

>We've been getting complaints that web browsers time out when
>they are attempting to access  The problem
>seems to be that that name resolves to a CNAME and an A record
>that both have short TTLs:
>	300 IN	CNAME
>	60 IN	A
>Consequently, they are never in our DNS cache when the user browses
>to that web site.  When I test the lookup by hand, it does take
>five or ten seconds for the response to appear.  What can be done
>about this?  We are running the BIND 8.3.3 version that is shipped
>with recent Solaris 9 releases.
I can resolve in 150 msec even without the CNAME or 
the A record in my cache. So I think there's more to your problem than 
just the shortness of the TTLs...

                                                            - Kevin

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