Amazon Technologies, Inc.

Benjamin W S Redman

David R Richardson

John David Cormie

Colm MacCarthaigh

Imran S Patel

Richard Sheehan

Bradley E Marshall

Tal Saraf

Nicholas J Maniscalco

Ronald M Whitman

David Alexander Dunlap

Ron Kohavi

Richard Alexander Sheehan

Eric R Vadon

Martin Cornelis Frederik Slot

Gautam K Jayaraman

Colm Gearóid MacCárthaigh

A system and method for the management of client computing device DNS queries and subsequent resource requests within a content delivery network service provider domain are provided. The management of the DNS queries can include the selection of computing devices corresponding to various Point of Presence locations for processing DNS queries. Additionally, the management of the content requests can include the selection of computing devices corresponding to resource cache components corresponding to various Point of Presence locations for providing requested content. The selection of the computing devices can incorporate logic related to geographic criteria, testing criteria, and the like.

Point of presence management in request routing

A system, method, and computer-readable medium for request routing based on client location information are provided. A content delivery network service provider receives a DNS query from a client computing device. The DNS query corresponds to a resource identifier for requested content from the client computing device. 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 client location information. The client location information is obtained from information corresponding to a mapping of at least partial IP addresses to known locations. 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 or transmit another alternative resource identifier.

Request routing utilizing client location information

Systems and methods for managing requesting routing functionality associated with resource requests for one or more resources associated with a content provider are provided. The request routing functionality can correspond to the processing of domain name service ('DNS') requests for resources by computing devices and the resolution of the DNS requests by the identification of a network address of a computing device that will provide the requested resources. Based on the processing of DNS queries initiated by a client computing device, a CDN service provider can correlate client computing device identifiers, such as an Internet Protocol ('IP') address, with identifiers (e.g., IP addresses) associated with other components in a content delivery environment, such as DNS resolvers associated with the client computing device.

Managing request routing information utilizing client identifiers

Systems and methods for managing requesting routing functionality associated with resource requests for one or more resources associated with a content provider are provided. The request routing functionality can correspond to the processing of domain name service ('DNS') requests for resources by computing devices by correlating client computing device identifiers, such as an Internet Protocol ('IP') address, with identifiers (e.g., IP addresses) associated with other components in a content delivery environment, such as DNS resolvers associated with the client computing device. The processing of the DNS requests can also correspond to client computing device clustering or classes of client computing devices.

Request routing information based on client IP groupings

Generally described, the present disclosure is directed to managing request routing functionality corresponding to resource requests for one or more resources associated with a content provider. The processing of the DNS requests by the service provider can include the selective filtering of DNS queries associated with a DNS query-based attack. A service provider can assign DNS servers corresponding to a distributed set of network addresses, or portions of network addresses, such that DNS queries exceeding a threshold, such as in DNS query-based attacks, can be filtered in a manner that can mitigate performance impact on for the content provider or service provider.

Request routing processing

Systems and method for the management and processing of resource requests by a service provider, such as a content delivery network ('CDN') service provider, on behalf of a content provider are provided. The CDN service provider can measure the performance associated with the delivery of resources to a requesting client computing devices from various computing devices associated with the CDN service provider. In one embodiment, a client computing device can execute code, such as scripts, that cause the client computing device to transmit requests to different computing devices associated with the CDN service provider's domain. Information associated with the processing of the responses can be used to measure CDN service provider latencies.

Latency measurement in resource requests

A system and method for the management of client computing device DNS queries and subsequent resource requests within a content delivery network service provider domain are provided. The management of the DNS queries can include the selection of computing devices corresponding to various Point of Presence locations for processing DNS queries. Additionally, the management of the content requests can include the selection of computing devices corresponding to resource cache components corresponding to various Point of Presence locations for providing requested content. The selection of the computing devices can incorporate logic related to geographic criteria, performance threshold criteria, testing criteria, and the like.

When a client requests content from a Content Delivery Network (or other system), a first portion of the content is transmitted to the client from a source capable of providing high performance to that client. When the client has a sufficient amount of the content to perform its function, then additional portions of the content can be transmitted to the client from a source that provides a lower performance to that client with a minimal or no performance penalty to the user of the client.

Opportunistic routing

Systems and methods for managing requesting routing functionality associated with resource requests for one or more resources associated with a content provider are provided. A content delivery network ('CDN') service provider, on behalf of a content provider, can process domain name service ('DNS') requests for resources by computing devices and resolve the DNS requests by the identification of a network address of a computing device that will provide the requested resources. Based on the processing of DNS queries initiated by a client computing device, the CDN service provider can measure CDN service provider latencies associated with the generation of DNS requests by network components associated with the client computing devices. Examples of the network components can include DNS resolvers associated with the client computing device.

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Seattle, WA, United States of America

Benjamin W S Redman