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images subdomain?

     
10:05 am on May 11, 2008 (gmt 0)

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Hello,

I have seen several sites use a images.nnn.com subdomain for all their images.

Can someone tell me some of the reasons for doing this?

10:31 am on May 11, 2008 (gmt 0)

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The reason is that the subdomain may be hosted on a server that has limitless space and bandwith, say for big file images or video. The main domain being on a another server say in a country adventageous for serving the actual audience. Think SEO etc. It sounds like a good scheme and I was about to ask a question on the best way to set up such an arrangement in terms of DNS etc.
3:35 pm on May 11, 2008 (gmt 0)

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One reason is it will speed up load times for the page for people with faster connections. A browser will only send out X amount of requests to a domain and won't make any others until those have been filled. Since a sub-domain is considered a separate domain it will download the HTML, css files, .js or whatever else you may have from the main domain while simultaneously downloading the images from the sub domain.
9:48 pm on May 11, 2008 (gmt 0)

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Thanks Coalman.

There are some good reasons to use a subdomain and I also like how the domain branding is maintained.