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[ NNSquad ] Traffic implications of DNS Prefetching 

Traffic implications of DNS Prefetching

http://j.mp/eyNTx1  (pinkbike)

    "Recently I received a call from our $2/month DNS service provider
     explaining that our DNS queries have increased to 400 million
     authoritative queries per month (a high of 120 queries/second) ,
     putting us outside the scope of the basic service and we were required
     to upgrade to a premium service in the range of $1600/month.  After
     some investigation we determined that browser DNS prefetching was
     causing an increase in our authoritative DNS queries of a whopping
     800%.  A single meta tag to control prefetching reduced our DNS
     queries by 350 million per month. The same implementation on a larger
     site, deviantART, reduced authoritative DNS queries by 10 billion per
     month."

--Lauren--
NNSquad Moderator