From Google Developers:
"DNS resolution time varies from <1ms for locally cached results, to hundreds of milliseconds due to the cascading nature of DNS. This can contribute significantly towards total page load time. This filter reduces DNS lookup time by providing hints to the browser at the beginning of the HTML, which allows the browser to pre-resolve DNS for resources on the page.
This filter inserts the tag <link rel="dns-prefetch"> (or <link rel="prefetch"> for IE9) in the HEAD section, for all domains present in the HTML document. If the Flush Resources Early rewriter is turned on, this information will also be flushed early."
Music and Electronic Devices Designer. Drum and Bass Addict. Creative Mind as Lifestyle. Cat in past Life. Soccer, Ice Hockey and Snowboard Lover. Marxist.
Sono Il Re sul Carro Danzante. Attraversando La Città Getto Via I Coriandoli Della Vostra Tristezza Regalando Passione Ed Estasi Nei Vostri Occhi. Follow Trony on: FusoElektronique
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Pre-Resolve DNS Lookup with DNS Prefetching 
