WEBPAGE REQUEST HANDLING

• US 20110238924A1
• Filed: 03/29/2010
• Published: 09/29/2011
• Est. Priority Date: 03/29/2010
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Sabir, Kenneth, Hampton, Mark Carl, de Morentin, Eric Martinez
• Granted Patent: US 8,381,098 B2
• Time in Patent Office: Days
• US Class Current: 711/138
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching
• CPC Class Codes: G06F 16/972 Access to data in other repository systems, e.g. legacy data or dynamic Web page generation
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]

Abstract

A method, computer program product, and system for webpage request handling is described. A method may comprise recording, in a memory, a change time for each of a plurality of elements of a website available from an origin server, each time a change to any one of the plurality of elements occurs. The method may further comprise updating a system-last-modified time of the website to a latest change time.

Claims

1. A method comprising:

recording, in a memory, a change time for each of a plurality of elements of a website available from an origin server, each time a change to any one of the plurality of elements occurs; and

updating a system-last-modified time of the website to a latest change time.

2. The method of claim 1 further comprising:

if the system-last-modified time of the website is later than a last-modified time of a copy of a webpage stored in a cache of at least one of a client electronic device, a proxy server, and the origin server, rebuilding the webpage at the origin server in response to a request for the webpage.

3. The method of claim 1 further comprising:

if the system-last-modified time of the website is not later than the last-modified time of the copy of the webpage stored in the cache of at least one of a client electronic device, a proxy server, and the origin server, retrieving the webpage from the cache.

4. The method of claim 1 further comprising:

rebuilding a webpage at the origin server if an if-modified-since HTTP request is true based upon, at least in part, at least one of the system-last-modified time and the latest change time.

5. The method of claim 1 further comprising:

retrieving a webpage from a cache of at least one of a client electronic device, a proxy server, and the origin server, if a 304 not-modified HTTP status code is returned in response to an if-modified-since HTTP request based upon, at least in part, at least one of the system-last-modified time and the latest change time.

6. The method of claim 1 further comprising:

determining if the change has no effect on content of a webpage; and

updating the system-last-modified time of the website without the change time of the change if it has no effect on the content of the webpage.

7. The method of claim 2 further comprising:

storing a copy of the webpage rebuilt at the origin server in the cache of the client electronic device, the webpage having one or more access controlled elements; and

setting a cache-control header of the webpage to private.

8. The method of claim 1 further comprising:

adding a webpage to a configurable exclusion list if at least one element on the webpage comes from a third party and a change time for the element cannot be determined by the origin server; and

preventing external caching of the webpage.

9. A computer program product residing on a computer readable storage medium having a plurality of instructions stored thereon, which, when executed by a processor, cause the processor to perform operations comprising:

recording, in a memory, a change time for each of a plurality of elements of a website available from an origin server, each time a change to any one of the plurality of elements occurs; and

updating a system-last-modified time of the website to a latest change time.

10. The computer program product of claim 9 further comprising instructions for:

if the system-last-modified time of the website is later than a last-modified time of a copy of a webpage stored in a cache of at least one of a client electronic device, a proxy server, and the origin server, rebuilding the webpage at the origin server in response to a request for the webpage.

11. The computer program product of claim 9 further comprising instructions for:

if the system-last-modified time of the website is not later than the last-modified time of the copy of the webpage stored in the cache of at least one of a client electronic device, a proxy server, and the origin server, retrieving the webpage from the cache.

12. The computer program product of claim 9 further comprising instructions for:

rebuilding a webpage at the origin server if an if-modified-since HTTP request is true based upon, at least in part, at least one of the system-last-modified time and the latest change time.

13. The computer program product of claim 9 further comprising instructions for:

retrieving a webpage from a cache of at least one of a client electronic device, a proxy server, and the origin server, if a 304 not-modified HTTP status code is returned in response to an if-modified-since HTTP request based upon, at least in part, at least one of the system-last-modified time and the latest change time.

14. The computer program product of claim 9 further comprising instructions for:

determining if the change has no effect on content of a webpage; and

updating the system-last-modified time of the website without the change time of the change if it has no effect on the content of the webpage.

15. The computer program product of claim 10 further comprising instructions for:

storing a copy of the webpage rebuilt at the origin server in the cache of the client electronic device, the webpage having one or more access controlled elements; and

setting a cache-control header of the webpage to private.

16. The computer program product of claim 9 further comprising instructions for:

adding a webpage to a configurable exclusion list if at least one element on the webpage comes from a third party and a change time for the element cannot be determined by the origin server; and

preventing external caching of the webpage.

17. A computing system comprising:

at least one processor;

at least one memory architecture coupled with the at least one processor;

a first software module executed on the at least one processor and the at least one memory architecture, wherein the first software module is configured to record, in a memory, a change time for each of a plurality of elements of a website available from an origin server, each time a change to any one of the plurality of elements occurs; and

a second software module executed on the at least one processor and the at least one memory architecture, wherein the second software module is configured to update a system-last-modified time of the website to a latest change time.

18. The computing system of claim 17 further comprising:

a third software module executed on the at least one processor and the at least one memory architecture, wherein the third software module is configured to, if the system-last-modified time of the website is later than a last-modified time of a copy of a webpage stored in a cache of at least one of a client electronic device, a proxy server, and the origin server, rebuild the webpage at the origin server in response to a request for the webpage.

19. The computing system of claim 17 further comprising:

a fourth software module executed on the at least one processor and the at least one memory architecture, wherein the fourth software module is configured to, if the system-last-modified time of the website is not later than the last-modified time of the copy of the webpage stored in the cache of at least one of a client electronic device, a proxy server, and the origin server, retrieve the webpage from the cache.

20. The computing system of claim 17 further comprising:

a fifth software module executed on the at least one processor and the at least one memory architecture, wherein the fifth software module is configured to rebuild a webpage at the origin server if an if-modified-since HTTP request is true based upon, at least in part, at least one of the system-last-modified time and the latest change time.