Last post Feb 02, 2016 06:43 AM by Candice Zhou
Feb 01, 2016 11:34 AM|rajemessage|LINK
I am using yslow to optimise my web site , it is saying
Grade A on Reduce DNS lookups
xyz.xyzbp.com: 30 components, 3048.6K
"The Domain Name System (DNS) maps hostnames to IP addresses, just like phonebooks map people's names to their phone numbers. When you type URL www.yahoo.com into the browser, the browser contacts a DNS resolver that returns the server's IP address. DNS has a cost; typically it takes 20 to 120 milliseconds for it to look up the IP address for a hostname. The browser cannot download anything from the host until the lookup completes."
q2) "last line says the browser cannot download anything from the host until the lookup completes" . does that mean when all
Feb 02, 2016 06:43 AM|Candice Zhou|LINK
According to your description, please refer to the following links:
And YSlow is Yahoo's product, it is not available for IE, it's better to post your question to Yahoo's Forums.