Scaled domain name service

摘要

A method or system for transferring information during the domain name service (DNS) lookup to more effectively utilizing the content delivery network (CDN) is disclosed. Information gathered from DNS request is used to identify information on how to serve the content with a chosen IP address returned from the DNS lookup. The DNS server selects from a number of possible IP addresses after analyzing information from the DNS request and popularity of associated content. The different IP addresses will result in different edge servers providing content. An IP address could be provided for popular content in a way that will tend to populate more content caches from the pool of edge servers in one embodiment.

主权项

1. A content delivery network (CDN) for delivering content to computing devices, the CDN comprising:
a plurality of points of presence (POPs) distributed geographically with respect to each other, each of the plurality of POPs comprising a plurality of content caches; a domain name service (DNS) to assist in resolving addresses used for delivering content, wherein:
the DNS analyzes a first parameter in a first subdomain field for a first DNS request to return a first IP address to a first computing device,the DNS analyzes a second parameter in a second subdomain field for a second DNS request to return a second IP address to a second computing device, the first and second parameters being different,the first and second DNS requests are for a content object,the DNS determines popularity of the content object,the first and second IP addresses are selected from a plurality of IP addresses as a function of popularity, andthe first and second IP addresses result in the CDN serving the content object from two different content caches of the plurality of content caches.