| 摘要 |
A content delivery network (CDN) for providing content objects and domain resolution. The CDN includes a connection with a terminal device, a second domain name service (DNS) system, an IP address store for holding authoritative Internet protocol (IP) addresses, and a content store holding at least one of the first or second content object. A first request to resolve a first domain name is received by the second DNS system at a second location. A second request to resolve a second domain name is received by the second DNS system at the second location. The first domain name is associated with a first content object, and the second domain name is associated with a second content object. The first and second requests are relayed with the terminal device, which receives Internet access from an access network. The access network comprises a first DNS system that functions in a recursing DNS mode. The content object is realized in a first location that is different from the second location of the terminal device. The second DNS system operates in a recursing DNS mode to retrieve a first IP address corresponding to the first domain name. The first IP address for the first domain name is returned from the second DNS system to the terminal device to fulfill the first request. The second DNS system operates in an authoritative DNS mode to retrieve a second IP address from the IP address store. The second IP address for the second domain name is returned from the second DNS system to the terminal device to fulfill the second request. |
