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YSlow

YSlow: Use a Content Delivery Network (CDN)

Overview

CDNs can give an equally fast web experience to your users across the globe.

How does your site score on this recommendation?

Details from Yahoo!

The user's proximity to your web server has an impact on response times. Deploying your content across multiple, geographically dispersed servers will make your pages load faster from the user's perspective.

Summary

Server
Medium
Moderate
14%

YSlow recommends:

A content delivery network (CDN) is a collection of web servers distributed across multiple locations to deliver content more efficiently to users.

The server selected for delivering content to a specific user is typically based on a measure of network proximity.

For example, the server with the fewest network hops or the server with the quickest response time is chosen.

Some large Internet companies own their own CDN, but it's cost-effective to use a CDN service provider, such as Akamai Technologies, Mirror Image Internet, or Limelight Networks.

For start-up companies and private web sites, the cost of a CDN service can be prohibitive, but as your target audience grows larger and becomes more global, a CDN is necessary to achieve fast response times.

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