Request routing utilizing cost information
First Claim
1. A computer-implemented method for request routing comprising:
- obtaining a DNS query from a client computing device at a first DNS nameserver, wherein the DNS query corresponds to a requested resource associated with an original resource identifier provided by a content provider, wherein the DNS query comprises at least part of the original resource identifier and specific content provider cost information, and wherein the first DNS nameserver corresponds to a content delivery network service provider that is different from the content provider;
determining whether the first DNS nameserver is authoritative to the DNS query as a function of the specific content provider cost information included in the DNS query, wherein the specific content provider cost information includes a financial cost attributable to the content provider for delivery of resources on behalf of the content provider;
obtaining an alternative resource identifier based on information associated with the client computing device and the content provider if the DNS nameserver is determined not to be authoritative, wherein the alternative resource identifier includes information for causing a DNS query to resolve to a domain corresponding to the content delivery service provider and additional routing information not included in the original resource identifier and wherein obtaining an alternative resource identifier further includes;
identifying one or more alternative resource identifiers corresponding to a point of presence associated with a financial cost for providing the requested resource below a cost threshold, wherein the cost threshold is obtained from the specific content provider cost information included in the DNS query; and
selecting an alternative resource identifier from the one or more resource identifiers based at least in part on the specific content provider cost information included in the DNS query;
transmitting the alternative resource identifier to the client computing device;
obtaining a subsequent DNS query from the client computing device at a second DNS nameserver, wherein the subsequent DNS query corresponds to the alternative resource identifier provided by the content delivery network service provider, and wherein the second DNS nameserver corresponds to the content delivery network service provider that is different from the content provider;
determining whether the second DNS nameserver is authoritative to the subsequent DNS query; and
selecting a cache component for providing content associated with the original resource request if the second DNS nameserver is authoritative to the second DNS query; and
transmitting information identifying the selected cache component if the second DNS nameserver is determined to be authoritative.
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Abstract
A system, method and computer-readable medium for request routing based on cost information are provided. A client request processing a resource identifier for requested content transmits a first DNS query to a content delivery network service provider. The content delivery network service provider transmits an alternative resource identifier in response to the client computing device DNS query. The alternative resource identifier is selected as a function of cost information. The client computing device then issues a second DNS query to the same content delivery network service provider. The content delivery network service provider can then either resolve the second DNS query with an IP address of a cache component or transmit another alternative resource identifier that will resolve to the content delivery network service provider. The process can repeat with the content delivery network service provider'"'"'s network until a DNS nameserver resolves a DNS query from the client computing device.
721 Citations
34 Claims
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1. A computer-implemented method for request routing comprising:
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obtaining a DNS query from a client computing device at a first DNS nameserver, wherein the DNS query corresponds to a requested resource associated with an original resource identifier provided by a content provider, wherein the DNS query comprises at least part of the original resource identifier and specific content provider cost information, and wherein the first DNS nameserver corresponds to a content delivery network service provider that is different from the content provider; determining whether the first DNS nameserver is authoritative to the DNS query as a function of the specific content provider cost information included in the DNS query, wherein the specific content provider cost information includes a financial cost attributable to the content provider for delivery of resources on behalf of the content provider; obtaining an alternative resource identifier based on information associated with the client computing device and the content provider if the DNS nameserver is determined not to be authoritative, wherein the alternative resource identifier includes information for causing a DNS query to resolve to a domain corresponding to the content delivery service provider and additional routing information not included in the original resource identifier and wherein obtaining an alternative resource identifier further includes; identifying one or more alternative resource identifiers corresponding to a point of presence associated with a financial cost for providing the requested resource below a cost threshold, wherein the cost threshold is obtained from the specific content provider cost information included in the DNS query; and selecting an alternative resource identifier from the one or more resource identifiers based at least in part on the specific content provider cost information included in the DNS query; transmitting the alternative resource identifier to the client computing device; obtaining a subsequent DNS query from the client computing device at a second DNS nameserver, wherein the subsequent DNS query corresponds to the alternative resource identifier provided by the content delivery network service provider, and wherein the second DNS nameserver corresponds to the content delivery network service provider that is different from the content provider; determining whether the second DNS nameserver is authoritative to the subsequent DNS query; and selecting a cache component for providing content associated with the original resource request if the second DNS nameserver is authoritative to the second DNS query; and transmitting information identifying the selected cache component if the second DNS nameserver is determined to be authoritative. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A computer-implemented method for request routing comprising:
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obtaining a DNS query from a client computing device at a first DNS nameserver, wherein the DNS query corresponds to a requested resource associated with a resource identifier, wherein the DNS query comprises at least part of the resource identifier and specific financial cost information attributable to an original content provider for delivery of resources on behalf of the original content provider, and wherein the first DNS nameserver corresponds to a content delivery network service provider; determining that the first resource identifier is associated with an alternative resource identifier as a function of the specific financial cost information included in the DNS query, wherein determining that the first resource identifier is associated with an alternative resource identifier includes; identifying one or more alternative resource identifiers corresponding to a point of presence associated with a financial cost for providing the requested resource below a cost threshold, wherein the cost threshold is obtained from the specific content provider cost information included in the DNS query; and selecting an alternative resource identifier from the one or more resource identifiers based at least in part on the specific content provider cost information included in the DNS query; transmitting the alternative resource identifier to the client computing device, wherein the alternative resource identifier includes information for causing a DNS query to resolve to a domain corresponding to the content delivery service provider and supplemental request routing information not included in the first resource identifier; obtaining a subsequent DNS query from the client computing device at a second DNS nameserver, wherein the subsequent DNS query corresponds to the alternative resource identifier provided by the content delivery network service provider and wherein the second DNS nameserver corresponds to the content delivery network service provider; resolving the subsequent DNS query, at the second DNS nameserver, to identify a cache component for providing content associated with the original resource request; and transmitting information identifying the identified cache component to the client computing device. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A system for request routing comprising:
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one or more hardware processors configured to implement a first network point of presence associated with a content delivery network service provider, wherein the first network point of presence includes a DNS nameserver component that receives a DNS query from a client computing device, wherein the DNS query corresponds to a requested resource associated with a first resource identifier, wherein the DNS query comprises at least part of the resource identifier and specific financial cost information attributable to an original content provider for delivery of resources on behalf of the original content provider, and wherein the DNS nameserver in the first network point of presence is operative to; determine that the first resource identifier is associated with an alternative resource identifier as a function of the specific financial cost information obtained from the DNS query, wherein determining that the first resource identifier is associated with an alternative resource identifier includes; identifying one or more alternative resource identifiers corresponding to a point of presence associated with a financial cost for providing the requested resource below a cost threshold, wherein the cost threshold is obtained from the specific content provider cost information included in the DNS query; and selecting an alternative resource identifier from the one or more resource identifiers based at least in part on the specific content provider cost information included in the DNS query; and transmit an alternative resource identifier to the client computing device, wherein the alternative resource identifier includes information for causing a DNS query to resolve to a domain corresponding to the content delivery service provider and supplemental request routing information not included in the first resource identifier; one or more hardware processors configured to implement a second network point of presence associated with a content delivery network service provider, wherein the second network point of presence includes a DNS nameserver component that receives a subsequent DNS query from a client computing device, wherein the subsequent DNS query corresponds to a requested resource associated with the alternative resource identifier, and wherein the DNS nameserver in the second network point of presence is operative to; resolve the subsequent DNS query to identify a cache component for providing content associated with the original resource request; and transmit information identifying the identified cache component to the client computing device. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification