anchor.diff:  68,vube.com,
   69,t.co,
   70,about.com,"max-age=3600, private"
  -71,gmw.cn,TIMED OUT
  -72,alipay.com,TIMED OUT
  +71,gmw.cn,max-age=60
  +72,alipay.com,
   73,wordpress.org,
   74,googleusercontent.com,
   75,odnoklassniki.ru,"[""no-cache"", ""no-store""]"
   76,youku.com,TIMED OUT
  -77,conduit.com,"public, private, max-age=910"
  +77,conduit.com,"public, private, max-age=3251"
   78,alibaba.com,
   79,google.com.tr,"private, max-age=0"
   80,flickr.com,private
  
positive.code: 82,adobe.com,max-age=900
  83,godaddy.com,"no-cache, no-store, must-revalidate"
  84,pornhub.com,
  85,huffingtonpost.com,max-age=9
  86,google.com.au,"private, max-age=0"
  87,amazon.de,no-cache
  88,blogspot.in,"private, max-age=0"
  
negative.code: 23,bing.com,"private, max-age=0"
  24,vk.com,no-store
  25,ebay.com,
  26,sohu.com,max-age=120
  27,google.de,"private, max-age=0"
  28,pinterest.com,
  29,163.com,max-age=80
  