Delta caching

• US 20060168348A1
• Filed: 03/22/2006
• Published: 07/27/2006
• Est. Priority Date: 07/13/2000
• Status: Active Grant

• Current Assignee: Oracle International Corporation (Oracle Corporation)
• Original Assignee: Oracle International Corporation (Oracle Corporation)
• Inventors: Casalaina, Marc C.
• Granted Patent: US 7,406,514 B2
• Time in Patent Office: Days
• US Class Current: 709/246
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching
• CPC Class Codes: H04L 67/5682 Policies or rules for updating, deleting or replacing the stored data
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A solution to latencies associated with server side processing time, as well as to latency resulting from the transit of information or tools from a server side to a client or user side is provided. The server side and client side can be coupled via a hard link or a network-type connection such as the Internet or a local area network. Select delta page information is stored in a concise manner on client side. As a result, the client does not have to contact the server when a user requests page information that is associated with stored delta page information. The stored delta page information can be accessed and used to update the current page thereby yielding the requested page. Thus, latency from server side processing and network transit time is reduced. An algorithm can be implemented on the client side to identify relevant stored delta page information, and to update the current page with that delta page information.

Claims

1. A method for updating a page on a client, the method comprising:

receiving, at the client from a server, the page;

receiving, at the client from the server, delta page information associated with the page, the delta page information including update information usable to update the page with one or more changes without having to contact the server; and

subsequent to the receiving of the page and the delta page information at the client, performing the following steps without having to contact the server;

receiving at the client user input that is associated with the delta page information;

retrieving the delta page information; and

updating the page with a change included in the update information of the delta page information.

2. The method of claim 1, wherein the delta page information is contained in a look-up table pursuant to an indexing scheme.

3. The method of claim 1, wherein the delta page information is embedded in the page.

4. The method of claim 1, wherein the delta page information includes a control delta that represents changes in a control of the page as a result of the user input.

5. The method of claim 1, wherein the delta page information embodies preprocessed computations that are responsive to the user input.

6. The method of claim 1, wherein the updating step further comprises:

layering the delta page information that is associated with the user input into the page via Dynamic HTML.

7. The method of claim 1, wherein the updating step is performed by a process that is embedded in the page.

8. The method of claim 1, wherein the received delta page information is one of a plurality of portions of delta page information received on the client side, each of the portions of delta page information being configured to update the page.

9. The method of claim 1, wherein the user input is received using the page.

10. The method of claim 1, wherein the user input is used to select the delta page information from a plurality of portions of delta page information available on the client.

16. The information storage medium of claim 11, wherein the updating step further comprises:

layering the delta page information that is associated with the user input into the page via Dynamic HTML.

11. An information storage medium having a plurality of instructions adapted to direct an information processing device to perform an operation for updating a page on a client, the operation comprising the steps of:

receiving, at the client from a server, the page;

receiving, at the client from the server, a delta page information associated with the page, the delta page information including update information usable to update the page with one or more changes without having to contact the server; and

subsequent to the receiving of the page and the delta page information at the client, performing the following steps without having to contact the server;

receiving at the client user input that is associated with the delta page information;

retrieving the delta page information; and

updating the page with a change included in the update information of the delta page information.

12. The information storage medium of claim 11, wherein the delta page information is contained in a look-up table pursuant to an indexing scheme.

13. The information storage medium of claim 11, wherein the delta page information is embedded in the page.

14. The information storage medium of claim 11, wherein the delta page information includes a control delta that represents changes in a control of the page as a result of the user input.

15. The information storage medium of claim 11, wherein the delta page information embodies preprocessed computations that are responsive to the user input.

17. The information storage medium of claim 11, wherein the updating step is performed by a process that is embedded in the page.

18. The information storage medium of claim 11, wherein the received delta page information is one of a plurality of portions of delta page information received on the client side, each of the portions of delta page information being configured for updating the page.

19. The information storage medium of claim 11, wherein the user input is received using the page.

20. The information storage medium of claim 11, wherein the user input is used to select the delta page information from a plurality of portions of delta page information available on the client side.

21. A method for transmitting page information generated on a server to a client, the method comprising:

receiving a request at the server from the client for page information that is not available at the client;

generating a page that reflects the requested information;

associating delta page information with the generated page, the delta page information representing differences between the generated page and a second page, the second page being configured for display on the client based on a user input, wherein the user input is responsive to the generated page; and

transmitting the generated page and the associated delta page information to the client, wherein the delta page information allows the client to generate the second page, responsive to the user input, using the differences between the generated page and the second page included in the delta page information without having to contact the server after receiving the delta page information and the generated page.

22. The method of claim 21, wherein the associating step is performed as part of the generating step.

23. The method of claim 21, wherein the delta page information is contained in a look-up table and the associating step further comprises:

organizing the delta page information within the look-up table pursuant to an indexing scheme; and

embedding the look-up table in the page.

24. The method of claim 21, wherein the delta page information is indexed according to specific user inputs that can be provided from the page, each specific user input being related to a portion of the delta page information.

25. The method of claim 21, wherein the delta page information is comprised of a control delta that represents changes in a control of the page as a result of the user input.

26. The method of claim 21, wherein the delta page information embodies preprocessed computations that are responsive to the user input.

27. The method of claim 21 further comprising:

transmitting a process for updating the page with the delta page information to the client side from the server.