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CS193H: High Performance Web Sites Lecture 6: Use a CDN Steve Souders Google

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Presentation on theme: "CS193H: High Performance Web Sites Lecture 6: Use a CDN Steve Souders Google"— Presentation transcript:

1 CS193H: High Performance Web Sites Lecture 6: Use a CDN Steve Souders Google

2 Announcements

3 Rule 2: Use a CDN Content Delivery Network geographically distributed servers => closer to your users also: backups, storage, caching, absorb spikes Akamai, Mirror Image, Limelight, Savvis new: Amazon S3, Panther Express (more affordable) dynamic content: 1 HTTP request, static content: all the rest distribute your static content before distributing your dynamic content

4 CDN – reverse proxy Edge Servers Origin Server(s) Developer User name server ISP's DNS Resolver CDN

5 CDN Usage CDN search.live.com/resultsAkamai en.wikipedia.org/wiki

6 Homework CSS sprites and data: URLs on your "Improving Top Site" class project Test improvements using Hammerhead record results in your personal Web 100 sheet read Chapter 3 of HPWS

7 Questions What's the most important requirement for a CDN? How can you find out which CDN a company uses? What plays the key role in sending users to the appropriate edge server?


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