1 Media Production Support v1 5 May 2010 Blake Crosby May 5, 2010 Delivering Content to End Users: A Non Technical Look

2 Media Production Support v1 5 May 2010 What is Content?  Stuff We Read:  Text (HTML Pages)  Images (JPGs, GIFs, PNGs)  Stuff We Watch:  Video (Flash Video streaming)  Interactive Content (flash maps, animations)  Stuff We Hear:  Live Radio (MP3)  All of this content is stored as files on a really large hard drive, called the BlueArc.  The BlueArc can hold 8TB of Data.  13,000 CD-ROMs  1,000 DVDs  4.1 Billion pages of text  55 Billion text messages

3 Media Production Support v1 5 May 2010 How Much Content Do We Have?  On cbc.ca:  3,946,822 HTML Documents  1,339,193 Images (JPG, GIF, PNG)  Live Radio Streaming:  Radio One: 32 streams  Radio Two: 5, plus 4 online only streams  Podcasts:  32,936 MP3s  1,503 MP4s  On-Demand Videos:  49,368 Videos

4 Media Production Support v1 5 May 2010 How Does It Work?

5 Media Production Support v1 5 May 2010 How Does It Work?

6 Media Production Support v1 5 May 2010 How Does Caching Work?

7 Media Production Support v1 5 May 2010 How Does Caching Work?

8 Media Production Support v1 5 May 2010 How Does It Work (No CDN) 1  Cons:  Essentially the entire internet population is coming back to Toronto to fetch content.  Doesn’t scale well (we’d need to add more servers to handle more load)  Content is located in one location (speed)  Pros:  Cheap  Content is located in one location (legal reasons)

9 Media Production Support v1 5 May 2010 What is Akamai  Content Delivery Network  Over 60,000 servers world wide  Handle delivery of our streaming and web content  Other customers include Apple, CNN, BBC, Much Music, Adobe.  CBC has been using Akamai since 2001

10 Media Production Support v1 5 May 2010 How Does It Work (With CDN) 1  Cons:  Expensive  Pros:  Unlimited Scalability  Content is located closer to user

11 Media Production Support v1 5 May 2010 Questions?  Questions?