Date: Fri, 30 Dec 2011 09:59:00 +1000 From: Da Rock <freebsd-questions@herveybayaustralia.com.au> To: freebsd-questions@freebsd.org Subject: Re: mutual forwarders in ISC BIND Message-ID: <4EFCFEC4.6070507@herveybayaustralia.com.au> In-Reply-To: <CAFpgnrN8R9iiv0KzVB3YXkG3Oy05a0FD1nQ4QXzPP_-MAT6LHA@mail.gmail.com> References: <20111228075422.GA18064@admin.sibptus.tomsk.ru> <4EFAE80D.9040900@my.gd> <20111228130734.GA23763@admin.sibptus.tomsk.ru> <4EFB1B4F.2090504@my.gd> <CAE_wXn2qKfQg_Od=VfX63TcvDSRFEz2ZLCDZDs71QjP2604QOQ@mail.gmail.com> <CAE_wXn1DzpxhhN_ASF%2B-LuxRBsdfgA8Se3ydhAgeJs5p53=VPg@mail.gmail.com> <20111228175512.GB27286@admin.sibptus.tomsk.ru> <20111229022538.GA38514@admin.sibptus.tomsk.ru> <CAFpgnrN8R9iiv0KzVB3YXkG3Oy05a0FD1nQ4QXzPP_-MAT6LHA@mail.gmail.com>
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On 12/29/11 12:45, Kevin Wilcox wrote: > On Dec 28, 2011 9:26 PM, "Victor Sudakov"<vas@mpeks.tomsk.su> wrote: > >> And the reason for the whole thread. One of the customers told me that >> 8.8.8.8 is faster than our own DNS servers which are located on the >> same 100 MBit/s LAN with them. I was shocked but it seems true, at >> least for the answers which are not yet cached. > That actually makes perfect sense. That's one of the Google DNS IP > addresses and they see a LOT of traffic, they're probably going to have the > majority of the domains your clients want to look up (assuming your clients > are like mine and most of their lookups are general web traffic) already in > cache - your servers will need to go through the whole lookup process. > > Still, after a day or two of use, I would think your servers would have the > bulk of what they needed in their caches. You may want to enable logging to > see which domains are being looked up (if it won't break any applicable > laws or policies) and do some spot-checks to see why they may not be in > your cache. > A rather amusing observation would be that they're not in the cache because the clients are using 8.8.8.8 ...
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