Processing DNS queries to identify pre-processing information

• US 9,154,551 B1
• Filed: 06/11/2012
• Issued: 10/06/2015
• Est. Priority Date: 06/11/2012
• Status: Active Grant

• Current Assignee: Amazon Technologies, Inc. (Amazon.com, Inc.)
• Original Assignee: Amazon Technologies, Inc. (Amazon.com, Inc.)
• Inventors: Watson, Ryan F.
• Primary Examiner(s): Wasel, Mohamed
• Assistant Examiner(s): WU, TSUNG YIN
• Application Number:
  US13/493,839
• Time in Patent Office: 1,212 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/9566 URL specific, e.g. using aliases, detecting broken or misspelled links
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 67/1014 based on the content of a request
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/5681 Pre-fetching or pre-delivering data based on network characteristics

Abstract

Systems and methods for processing a DNS query to identify and implement pre-processing information by a DNS server component in anticipation of a corresponding content request from a client computing device are provided. The pre-processing information can correspond to identification of content to be preloaded or other actions to be implemented by one or more computing devices in association with an anticipated client content request. Based on identification of the content or future actions, a DNS server component can provide the pre-processing information to one or more computing devices, such as computing devices of a CDN service provider and/or an original content provider, in advance of a corresponding request for content from the client computing device in order to improve performance associated with responding to the client request.

Claims

1. A method comprising:

obtaining a DNS query from a client computing device at a DNS server component, wherein the DNS query corresponds to a requested resource associated with a resource identifier;

parsing, at the DNS server component, a DNS portion of the associated resource identifier to identify pre-processing information corresponding to the requested resource;

resolving the DNS query by selecting a cache server component for providing the requested resource to the client computing device and transmitting information identifying the selected cache server component to the client computing device, wherein the DNS server component and the cache server component are different; and

implementing, at the DNS server component, the identified pre-processing information by directly transmitting the pre-processing information from the DNS server component to the selected cache server component or an original content provider in anticipation of a subsequent request by the client computing device to the selected cache server component for the requested resource.

2. The method as recited in claim 1, wherein the pre-processing information includes identification of an origin server corresponding to the requested resource.

3. The method as recited in claim 1, wherein the pre-processing information includes identification of the requested resource.

4. The method as recited in claim 1, wherein implementing the identified pre-processing information further comprises determining whether the requested resource is cacheable.

5. The method as recited in claim 4, wherein implementing the identified pre-processing information further comprises transmitting instructions to the selected cache server component to open a communications channel between two or more nodes of a content delivery network associated with the selected cache server component if the requested resource is determined to be cacheable.

6. The method as recited in claim 4, wherein implementing the identified pre-processing information further comprises transmitting instructions to the selected cache server component to open a communications channel between the selected cache server component and an origin server of the original content provider if the requested resource is determined not to be cacheable.

7. The method as recited in claim 4, wherein implementing the identified pre-processing information further comprises transmitting instructions to the original content provider to open a communications channel between an origin server of the original content provider and the selected cache server component if the requested resource is determined not to be cacheable.

8. The method as recited in claim 7, wherein the instructions further include instructions to preload the requested resource.

9. The method as recited in claim 4, wherein implementing the identified pre-processing information further comprises transmitting instructions to the selected cache server component to preload the requested resource from the original content provider if the requested resource is determined not to be cacheable.

10. A method comprising:

obtaining a DNS query from a client computing device at a DNS server component, wherein the DNS query corresponds to a requested resource associated with a resource identifier;

identifying, at the DNS server component, pre-processing information corresponding to the requested resource, wherein the pre-processing information is included in a DNS portion of the resource identifier;

resolving the DNS query by selecting a cache server component for providing the requested resource to the client computing device and transmitting information identifying the selected cache server component to the client computing device, wherein the DNS server component and the cache server component are different; and

implementing, at the DNS server component, the identified pre-processing information by directly transmitting the pre-processing information from the DNS server component to the selected cache server component or an original content provider in anticipation of a request by the client computing device to the selected cache server component for the requested resource.

11. The method as recited in claim 10, wherein the pre-processing information includes identification of an origin server corresponding to the requested resource.

12. The method as recited in claim 10, wherein the pre-processing information includes identification of the requested resource.

13. The method as recited in claim 12, wherein the requested resource includes dynamic content.

14. The method as recited in claim 13, wherein the pre-processing information includes instructions to preload the dynamic content.

15. The method as recited in claim 14, wherein implementing the identified pre-processing information comprises transmitting the instructions to the selected cache server component to preload the dynamic content from an origin server in anticipation of a subsequent request by the client computing device to the selected cache server component for the requested resource.

16. The method as recited in claim 10, wherein the pre-processing information includes instructions to open a communications channel.

17. The method as recited in claim 10, wherein the pre-processing information includes instructions to commence transcoding the requested resource into the appropriate format.

18. A system comprising:

a DNS server component implemented by a computing device, wherein the DNS server component is operable to;

obtain a DNS query from a client computing device at a DNS server, wherein the DNS query corresponds to a requested resource associated with a resource identifier;

identify pre-processing information corresponding to the requested resource, wherein the pre-processing information is included in a DNS portion of the resource identifier;

resolve the DNS query by selecting a cache server component for providing the requested resource to the client computing device and transmitting information identifying the selected cache server component to the client computing device, wherein the DNS server component and the cache server component are different; and

implement the identified pre-processing information by directly transmitting the pre-processing information to the selected cache server component or an original content provider in anticipation of a request by the client computing device to the selected cache server component for the requested resource.

19. The system as recited in claim 18, wherein the pre-processing information includes identification of an origin server corresponding to the requested resource.

20. The system as recited in claim 18, wherein the pre-processing information includes identification of the requested resource.

21. The system as recited in claim 18, wherein the pre-processing information includes instructions to preload the requested resource.

22. The system as recited in claim 21, wherein implementing the identified pre-processing information comprises transmitting the instructions to the selected cache server component to preload the requested resource from an origin server in anticipation of a subsequent request by the client computing device to the selected cache server component for the requested resource.

23. The system as recited in claim 18, wherein the pre-processing information includes instructions to open a communications channel.

24. The system as recited in claim 18, wherein the pre-processing information includes instructions to commence transcoding the requested resource into the appropriate format.

25. The system as recited in claim 18, wherein implementing the identified pre-processing information further comprises determining whether the requested resource is cacheable.

26. The system as recited in claim 25, wherein implementing the identified pre-processing information further comprises transmitting instructions to the selected cache server component to open a communications channel between two or more nodes of a content delivery network associated with the selected cache server component if the requested resource is determined to be cacheable.

27. The system as recited in claim 25, wherein implementing the identified pre-processing information further comprises transmitting instructions to the selected cache server component to open a communications channel between the selected cache server component and an origin server of the original content provider if the requested resource is determined not to be cacheable.

28. The system as recited in claim 25, wherein implementing the identified pre-processing information further comprises transmitting instructions to the original content provider to open a communications channel between an origin server of the original content provider and the selected cache server component if the requested resource is determined not to be cacheable.

29. The system as recited in claim 25, wherein implementing the identified pre-processing information further comprises transmitting instructions to the selected cache server component to preload the requested resource from the original content provider if the requested resource is determined not to be cacheable.