Hybrid Unicast/Anycast Content Distribution Network System

摘要

A method includes receiving a request for an edge cache address, and comparing a requestor address to an anycast group. The method can further include providing an anycast edge cache address when the requestor address is in the anycast group. Alternatively, the method can further include determining an optimal cache server, and providing a unicast address of the optimal cache server when the requestor address is not in the anycast group.

主权项

1. A system comprising:
a memory that stores instructions; and a processor that executes the instructions to perform operations, the operations comprising:
receiving, from a requestor, a request for an edge cache address of a cache server;comparing an address of the requestor to an anycast group, wherein when the anycast group is in a stable network that has an existing relationship regulating how traffic enters a network that includes the server, the existing relationship causes requests from the anycast group to enter the network at a same router for an extended period of time, wherein when the anycast group is in an unstable network, the traffic enters the network at multiple provider edge routers instead of the same router; andproviding, to the requestor, the edge cache address as an anycast address when the address of the requestor is in the anycast group.