System And Method For Routing Content Based On Real-Time Feedback

摘要

A method includes receiving at a cache server a content request from a client system, determining that the cache server is overloaded in response to receiving the content request, and in response to determining that the cache server is overloaded, returning to the client system a domain redirection response including a load status of the cache server.

主权项

1. A system, comprising:
a memory that stores instructions; a processor that executes the instructions to perform operations, the operations comprising:
returning, in response to determining that a first cache server is overloaded, a domain redirection response including a load status of the first cache server, wherein the domain redirection response includes an encoded status string indicating the load status of the first cache server, and wherein the encoded status string is decoded from a domain name request to enable a client system to determine where to send a content request;determining, at a domain name system server, that a second cache server can fulfill the content request for a lower network cost than the first cache server, wherein the determining is performed in response to receiving the domain name request; andtransmitting, to the client system, a domain name reply that directs the content request to the second cache server, wherein the domain name reply includes a first counter field that provides an indication to the second cache server that the second cache server is a second server to receive the content request.