Content Delivery Networks
Content Delivery Networks 7. What role do content delivery networks play in a disaster recovery plan?Pure content players should keep that in mind when planning for a disaster. Content delivery networks can handle excess traffic, preventing server failures. They can also keep your site online in case your main server fails because of a denial-of-service attack or an environmental problem. The peace of mind doesnt come without a significant cost. Most content delivery networks, however, charge customers based on the amount of content served up; the ongoing costs may be negligible compared with the benefits.
On September 11, millions of people rushed online to get updates on the terrorist attacks. While the traffic jam put an enormous strain on Web servers, most large news and information sites were using content delivery networks that absorbed the excess page requests. "On September 11, 80 percent of the traffic coming into MSNBC was handled by Akamai, along with 12.7 million streams of video," says Kieran Taylor, director of product management at Akamai Technologies.