Efficiently serving large objects in a distributed computing network

• US 20030046335A1
• Filed: 08/30/2001
• Published: 03/06/2003
• Est. Priority Date: 08/30/2001
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Kaminsky, David L., Doyle, Ronald P., Ogle, David M.
• Application Number:
  US09/943,562
• Publication Number:
  US 20030046335A1
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: G06F 16/10 File systems; File servers
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

Techniques are disclosed for improving the serving of large objects (equivalently, large files) in distributed computing networks which include network-attached storage (“NAS”). Existing features of Hypertext Transfer Protocol (“HTTP”) and of Web server implementations are leveraged to achieve performance improvements in a novel way, and thereby greatly facilitate introduction of the present invention into existing networking environments. In particular, objects meeting certain criteria may be served using “redirect files” in which a redirect status code is used to cause content retrieval requests to be automatically redirected from the requesting client device to the NAS, such that the requested content is served from the NAS rather than through a Web server from a Web server farm.

Claims

1. A method of efficiently serving objects in a computing network, comprising steps of:

receiving a request for an object stored on network-attached storage (“

NAS”

); and

evaluating predetermined criteria to see if the stored object should be served from the NAS through a recipient of the received request.

2. The method according to claim 1, wherein the evaluating step further comprises steps of:

serving the stored object through the recipient of the received request when the selected criteria are not met; and

informing a sender of the received request that a subsequent connection should be established for serving the stored object when the selected criteria are met.

3. The method according to claim 2, wherein the subsequent connection bypasses the recipient of the received request.

4. The method according to claim 2, wherein the informing step uses a redirect code of an existing protocol.

5. The method according to claim 4, wherein the existing protocol is Hypertext Transfer Protocol.

6. The method according to claim 4, wherein the existing protocol is Wireless Session Protocol.

7. The method according to claim 4, wherein receipt of the redirect code by the sender of the received request automatically causes the sender to request establishment of the subsequent connection.

8. The method according to claim 1, wherein the predetermined criteria include a size of the stored object.

9. The method according to claim 8, wherein evaluating the predetermined criteria comprises comparing the size of the stored object to a statically-specified number.

10. The method according to claim 9, wherein the statically-specified number is specified by an administrator using a configuration interface.

11. The method according to claim 8, wherein evaluating the predetermined criteria comprises comparing the size of the stored object to a dynamically-determined number.

12. The method according to claim 11, wherein the dynamically-determined number is determined in view of current network conditions.

13. The method according to claim 1, wherein the predetermined criteria include a naming extension of the stored object.

14. The method according to claim 13, wherein evaluating the predetermined criteria comprises determining whether the naming extension matches an element in a statically-specified set of naming extensions.

15. The method according to claim 14, wherein the statically-specified set of naming extensions is specified by an administrator using a configuration interface.

16. The method according to claim 13, wherein evaluating the predetermined criteria comprises determining whether the naming extension matches an element in a set of dynamically-determined set of naming extensions.

17. The method according to claim 16, wherein the dynamically-determined set of naming extensions is determined in view of current network conditions.

18. The method according to claim 1, wherein the predetermined criteria include a name of the stored object.

19. The method according to claim 18, wherein evaluating the predetermined criteria comprises determining whether the object name matches an element in a statically-specified set of object names.

20. The method according to claim 19, wherein the statically-specified set of object names is specified by an administrator using a configuration interface.

21. The method according to claim 18, wherein evaluating the predetermined criteria comprises determining whether the object name matches an element in a set of dynamically-determined set of object names.

22. The method according to claim 21, wherein the dynamically-determined set of object names is determined in view of current network conditions.

23. The method according to claim 1, wherein the predetermined criteria include a content type of the stored object.

24. The method according to claim 23, wherein evaluating the predetermined criteria comprises determining whether the content type matches an element in a statically-specified set of content types.

25. The method according to claim 24, wherein the statically-specified set of content types is specified by an administrator using a configuration interface.

26. The method according to claim 23, wherein evaluating the predetermined criteria comprises determining whether the content type matches an element in a set of dynamically-determined set of content types.

27. The method according to claim 26, wherein the dynamically-determined set of content types is determined in view of current network conditions.

28. The method according to claim 1, wherein the predetermined criteria includes use of one or more wildcards which may operate to match more than one stored object.

29. A method of deploying objects to improve efficiency of serving large objects in network computing environments which include network-attached storage (“

NAS”

), comprising steps of;

receiving a deployment request for a particular object;

deploying the particular object on the NAS;

evaluating characteristics of the particular object;

creating a redirect link on one or more servers from which the particular object may be requested, if the evaluated characteristics of the particular object meet predetermined criteria; and

creating an object serving link on the one or more servers if the evaluated characteristics of the particular object do not meet the predetermined criteria.

30. The method according to claim 29, wherein the redirect link enables returning a redirect status code to a requester of the object.

31. The method according to claim 30, wherein receiving the redirect status code causes the requester of the object to automatically request establishment of a subsequent connection for retrieving the particular object directly from the NAS.

32. The method according to claim 30, wherein contents of the redirect link are programmatically created.

33. The method according to claim 30, wherein contents of the redirect link are manually created.

34. A method of efficiently serving large objects in network computing environments which include network-attached storage (“

NAS”

), comprising steps of;

receiving a deployment request for a particular object;

deploying the particular object on the NAS;

creating a redirect link on one or more servers from which the particular object may be requested;

creating an object serving link on the one or more servers; and

delaying until run-time a decision on whether to serve the particular object directly from the NAS using the redirect link or through a selected one of the servers using the object serving link.

35. A system for efficiently serving objects in a computing network, comprising:

means for receiving a request for an object stored on network-attached storage (“

NAS”

); and

means for evaluating predetermined criteria to see if the stored object should be served from the NAS through a recipient of the received request.

36. The system according to claim 35, wherein the means for evaluating further comprises:

means for serving the stored object through the recipient of the received request when the selected criteria are not met; and

means for informing a sender of the received request that a subsequent connection should be established for serving the stored object when the selected criteria are met.

37. The system according to claim 36, wherein the subsequent connection bypasses the recipient of the received request.

38. The system according to claim 36, wherein the means for informing uses a redirect code of an existing protocol, and wherein receipt of the redirect code by the sender of the received request automatically causes the sender to request establishment of the subsequent connection.

39. A system for deploying objects to improve efficiency of serving large objects in network computing environments which include network-attached storage (“

NAS”

), comprising;

means for receiving a deployment request for a particular object;

means for deploying the particular object on the NAS;

means for evaluating characteristics of the particular object;

means for creating a redirect link on one or more servers from which the particular object may be requested, if the evaluated characteristics of the particular object meet predetermined criteria; and

means for creating an object serving link on the one or more servers if the evaluated characteristics of the particular object do not meet the predetermined criteria.

40. A computer program product for efficiently serving objects in a computing network, the computer program product embodied on one or more computer-readable media and comprising:

computer readable program code means for receiving a request for an object stored on network-attached storage (“

NAS”

); and

computer readable program code means for evaluating predetermined criteria to see if the stored object should be served from the NAS through a recipient of the received request.

41. The computer program product according to claim 40, wherein the computer readable program code means for evaluating further comprises:

computer readable program code means for serving the stored object through the recipient of the received request when the selected criteria are not met; and

computer readable program code means for informing a sender of the received request that a subsequent connection should be established for serving the stored object when the selected criteria are met.

42. The computer program product according to claim 41, wherein the subsequent connection bypasses the recipient of the received request.

43. The computer program product according to claim 41, wherein the computer readable program code means for informing uses a redirect code of an existing protocol, and wherein receipt of the redirect code by the sender of the received request automatically causes the sender to request establishment of the subsequent connection.

44. A computer program product for efficiently serving large objects in network computing environments which include network-attached storage (“

NAS”

), the computer program product embodied on one or more computer-readable media and comprising;

computer readable program code means for receiving a deployment request for a particular object;

computer readable program code means for deploying the particular object on the NAS;

computer readable program code means for creating a redirect link on one or more servers from which the particular object may be requested;

computer readable program code means for creating an object serving link on the one or more servers; and

computer readable program code means for delaying until run-time a decision on whether to serve the particular object directly from the NAS using the redirect link or through a selected one of the servers using the object serving link.