ANYCAST-BASED, WIDE-AREA DISTRIBUTED MAPPING AND LOAD DISTRIBUTION SYSTEM

摘要

A domain name system (DNS) comprising: a DNS server including: an anycast module configured to accept a request for a network address of a content server, and responding to the request having a network address selected from a plurality of anycast network addresses, a load distribution module communicably coupled to the anycast module, configured to: receive load information from at least one of a plurality of content servers to provide an overloaded content server based on the load information and instructing the congested content server to stop advertising one or more of the plurality of anycast network addresses, and a plurality of content servers capable of communicating with the DNS server, each of which A variety of content servers include: a notice module configured to: direct instructions from the DNS server to advertise certain of the plurality of anycast network addresses and to advertise the particular ones of the plurality of anycast network addresses, and a load monitor module configured to: collect load information associated with the server and communicate the load information to the DNS server.