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CDN
Last modified: Tuesday, December 18, 2001 

Short for content delivery network, a network of servers that delivers a Web page to a user based on the geographic locations of the user, the origin of the Web page and a content delivery server. A CDN copies the pages of a Web site to a network of servers that are dispersed at geographically different locations, caching the contents of the page. When a user requests a Web page that is part of a CDN, the CDN will redirect the request from the originating site's server to a server in the CDN that is closest to the user and deliver the cached content. The CDN will also communicate with the originating server to deliver any content that has not been previously cached.

This service is effective in speeding the delivery of content of Web sites with high traffic and Web sites that have global reach. The closer the CDN server is to the user geographically, the faster the content will be delivered to the user. CDNs also provide protection from large surges in traffic

The process of bouncing through a CDN is nearly transparent to the user. The only way a user would know if a CDN has been accessed is if the delivered URL is different than the URL that has been requested.

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For internet.com pages about CDN . Also check out the following links!

Related Links

Content Delivery Network Services  
A listing of different CDN service providers.

Content Delivery Networks
Although at first glance these Net newcomers appear to pose a threat to ISPs, digging deeper we find a strong symbiosis - and potential revenue opportunities.

Content Delivery Networks: Build or Buy
This article looks at what is involved in setting up a CDN.

related categories

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Servers

World Wide Web

related terms

cache

data mirroring

server mirroring


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