Request routing utilizing point of presence load information

摘要

A system, method and computer-readable medium for request routing based on prioritization and load information are provided. A client request processing a resource identifier for requested content transmits a DNS query to a content delivery network service provider. Based on a content provider identifier included in the DNS query, a receiving DNS nameserver determines a selection from a hierarchical organization of POPs and the relative capacity for a selected POP to process a subsequent request for resources. Based on the processing of the prioritization information and load information, the receiving DNS nameserver resolves the DNS query.

主权项

1. A computer-implemented method for request routing comprising:
obtaining a DNS query from a client computing device, wherein the DNS query corresponds to a requested resource associated with a resource identifier, the requested resource provided by a content provider to a service provider; identifying one or more sets of POPs associated with the service provider based on prioritization information selected by the content provider; determining whether one or more POPs in the identified POPs can service additional content requests based on availability information associated with the one or more POPs; and transmitting information responsive to the DNS query based on the determination that one or more POPs have capacity.