Extensible domain name service

• US 7,761,570 B1
• Filed: 06/16/2004
• Issued: 07/20/2010
• Est. Priority Date: 06/26/2003
• Status: Active Grant

• Current Assignee: Akamai Technologies, Inc.
• Original Assignee: Nominum Incorporated (Akamai Technologies, Inc.)
• Inventors: Halley, Robert Thomas
• Primary Examiner(s): Chang; Jungwon
• Application Number:
  US10/870,282
• Time in Patent Office: 2,225 Days
• Field of Search: 709/230, 709/226, 709/246
• US Class Current: 709/226
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]

Abstract

The invention disclosure describes an extended DNS data having an extensible attribute as well as systems and methods that utilize this attribute. Typically, the extensible attribute includes both attribute data and metadata configured to indicate a type of the attribute data. By varying the metadata, different instances of the attribute data may include different data types. The attribute data is configured, for example, to characterize other fields in the extended DNS data and/or to enable new applications relating to DNS data.

In various embodiments the extensible attribute within the extended DNS is accessed through an application programming interface (API). This API is configured to facilitate input and output of the extended DNS data and to allow an external application to identify and interchange those attribute data that the external application is configured to process.

Claims

1. A network application system comprising:

data storage configured to store standard DNS data and extended DNS data, the standard DNS data and extended DNS data being mutually exclusive, the extended DNS data including an extensible DNS field configured to store attribute data and metadata, the metadata configured to characterize a type of the attribute data to a non-DNS application on an application server;

a data driver configured to read from or write to the data storage, and to convert the extended DNS data between a neutral interchange format and a format used to store the extended DNS data in the data storage, the neutral interchange format including an attribute field and a metadata field, the metadata field being configured for storing data characterizing data stored in the attribute field; and

a DNS server configured to exchange the extended DNS data with the data driver in the neutral interchange format, to parse the data in the neutral interchange format, and to translate a domain name to DNS information.

2. The network application system of claim 1, wherein the DNS server is further configured to differentiate between elements of the exchanged data that the DNS server is configured to use further and elements of the exchanged data that the DNS server is not configured to use further.

3. A computer readable medium having stored thereupon computer code configured to provide domain name services, the computer code comprising:

a code segment configured to read extended DNS data, the extended DNS data and standard DNS data being mutually exclusive, the extended DNS data including an extensible DNS field configured to store attribute data and metadata, the metadata configured to characterize a type of the attribute data to a non-DNS application on an application server;

a code segment configured to convert the read extended DNS data to a neutral interchange format, the neutral interchange format including an attribute field and a metadata field, the metadata field being configured for storing data characterizing data stored in the attribute field; and

a code segment configured to output the read extended DNS data.

4. The computer readable medium of claim 3, further including a code segment configured to control access to the extended DNS data.

5. The computer readable medium of claim 3, further including a code segment configured to parse the neutral interchange format and to use the metadata to identify attribute data which an application server is configured to use.

6. The computer readable medium of claim 3, further including a code segment configured for use in load balancing referrals in a domain name service.

7. A method of accessing DNS data, the method comprising:

receiving a data request for standard DNS data;

accessing data storage to read extended DNS data, the extended DNS data and the standard DNS data being mutually exclusive, the extended DNS data including an extensible DNS field configured to store attribute data and metadata, the metadata configured to characterize a type of the attribute data to a non-DNS application on an application server; and

outputting at least part of the read extended DNS data.

8. The method of claim 7 wherein the read extended DNS data is outputted in a neutral interchange format, the neutral interchange format including an attribute field and a metadata field, the metadata field being configured for storing data characterizing data stored in the attribute field.

9. The method of claim 7, further including converting the read extended DNS data to a neutral interchange format, the neutral interchange format including an attribute field and a metadata field, the metadata field being configured for storing data characterizing data stored in the attribute field.

10. The method of claim 7, further including presenting the outputted extended DNS data responsive to the attribute data.

11. The method of claim 7, wherein the data request includes a request for translating a domain name to an MX record.

12. The method of claim 7, wherein the data request includes a request for translating a domain name to an IP address.

13. The method of claim 7, wherein the extended DNS data is sorted using the attribute data.

14. The method of claim 7, wherein the outputted data is a subset of the read extended DNS data.

15. The method of claim 7, further including using the attribute data to load balance a domain name service.

16. The method of claim 7, further including using the attribute data to control access to the standard DNS data.

17. A method of storing DNS data, the method comprising:

receiving standard DNS data; and

storing the received standard DNS data in a data storage configured to store extended DNS data, the extended DNS data and the standard DNS data being mutually exclusive, the extended DNS data including an extensible DNS field configured to store attribute data and metadata, the metadata configured to characterize a type of the attribute data to a non-DNS application on an application server.

18. The method of claim 17, further including using the attribute data to determine authority to write the standard DNS data to the data storage.

19. The method of claim 18, wherein the authority to write to the standard DNS data is at the node level or the zone level.

20. The method of claim 18, wherein the authority to write to the standard DNS data is specific to a field within an extensible DNS data set.

21. The method of claim 17, wherein the standard DNS data is received in a neutral interchange format.

22. A computer readable medium having stored thereupon computer code for a domain name service, the computer code comprising:

a code segment for receiving a request for standard DNS data;

a code segment for reading extended DNS data in response to the request, the extended DNS data and the standard DNS data being mutually exclusive, the extended DNS data including an extensible DNS field configured to store attribute data and metadata, the metadata configured to characterize a type of the attribute data to a non-DNS application on an application server; and

a code segment for outputting at least part of the read extended DNS data.

23. A computer readable medium having stored thereupon computer code for a domain name service, the computer code comprising:

a code segment for receiving standard DNS data; and

a code segment for storing the received DNS data in a data storage configured to store extended DNS data, the extended DNS data and the standard DNS data being mutually exclusive, the extended DNS data including an extensible DNS field configured to store attribute data and metadata, the metadata configured to characterize a type of the attribute data to a non-DNS application on an application server.

24. The computer readable medium having stored thereupon computer code of claim 23, the computer code further comprising a code segment for using the extended DNS data to determine authority to write the standard DNS data.