ADAPTIVE CACHING OF DATA

• US 20110119444A1
• Filed: 11/18/2009
• Published: 05/19/2011
• Est. Priority Date: 11/18/2009
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Nelson, Todd A., Torella, Joseph H., DeCusatis, Casimer M., Krishnamurthy, Rajaram B., Rao, Anuradha
• Granted Patent: US 8,788,760 B2
• Time in Patent Office: Days
• US Class Current: 711/118
• CPC Class Codes: G06F 12/0815 Cache consistency protocols
• CPC Class Codes: G06F 16/24552 Database cache management

Abstract

Data access is facilitated by employing local caches and an adaptive caching strategy. Specific data is stored in each local cache and consistency is maintained between the caches. To maintain consistency, adaptive caching structures are used. The members of an adaptive caching structure are selected based on a sharing context, such as those members having a chosen association identifier or those members not having the chosen association identifier.

Claims

1. A computer program product for facilitating data access in a computing environment, the computer program product comprising:

a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising;

adaptively creating a caching structure usable in communicating with one or more caches of the computing environment, the one or more caches to be included in the caching structure being selected based on a data sharing context; and

using the caching structure to provide an indication of a change to the one or more caches, wherein the indication is based on a type of the caching structure.

2. The computer program product of claim 1, wherein the data sharing context comprises a chosen association identifier.

3. The computer program product of claim 2, wherein the chosen association identifier is an association identifier of a cache being updated, and the caching structure is used to provide an update to the one or more caches of the caching structure having that association identifier.

4. The computer program product of claim 2, wherein the data sharing context further comprises a selected access control.

5. The computer program product of claim 2, wherein the chosen association identifier is for a selected business role.

6. The computer program product of claim 1, wherein the data sharing context comprises association identifiers other than an association identifier associated with a selected cache being updated.

7. The computer program product of claim 6, wherein the indication comprises an invalidate of at least a portion of the one or more caches, wherein the caching structure is used to provide an invalidate to the one or more caches having an association identifier different than the association identifier of the selected cache being updated.

8. The computer program product of claim 1, wherein the adaptively creating is performed in response to a request to update a cache satisfying the data sharing context.

9. The computer program product of claim 1, wherein the adaptively creating is performed based on a prospective update of caches satisfying the data sharing context.

10. The computer program product of claim 1, wherein a cache of the one or more caches includes at least one of an entire data structure or a portion of the entire data structure, wherein the data structure comprises a plurality of portions, and wherein the method further comprises assigning an association identifier to each portion of one or more portions of the plurality of portions.

11. The computer program product of claim 1, wherein the adaptively creating comprises including in the caching structure a cache based on speculation that the cache will be updated within a defined amount of time.

12. A computer system for facilitating data access in a computing environment, the computer system comprising:

a memory; and

a processor in communications with the memory, wherein the computer system is capable of performing a method, said method comprising;

adaptively creating a caching structure usable in communicating with one or more caches of the computing environment, the one or more caches to be included in the caching structure being selected based on a data sharing context; and

using the caching structure to provide an indication of a change to the one or more caches, wherein the indication is based on a type of the caching structure.

13. The computer system of claim 12, wherein the data sharing context comprises a chosen association identifier.

14. The computer system of claim 12, wherein the data sharing context comprises association identifiers other than an association identifier associated with a selected cache being updated.

15. The computer system of claim 12, wherein the adaptively creating is performed based on a prospective update of caches satisfying the data sharing context.

16. The computer system of claim 12, wherein a cache of the one or more caches includes at least one of an entire data structure or a portion of the entire data structure, wherein the data structure comprises a plurality of portions, and wherein the method further comprises assigning an association identifier to each portion of one or more portions of the plurality of portions.

17. The computer system of claim 12, wherein the adaptively creating comprises including in the caching structure a cache based on speculation that the cache will be updated within a defined amount of time.

18. A method for facilitating data access in a computing environment, the method comprising:

adaptively creating, by at least one processor of the computing environment, a caching structure usable in communicating with one or more caches of the computing environment, the one or more caches to be included in the caching structure being selected based on a data sharing context; and

using the caching structure, by one or more processors, to provide an indication of a change to the one or more caches, wherein the indication is based on a type of the caching structure.

19. The method of claim 18, wherein the data sharing context comprises a chosen association identifier.

20. The method of claim 18, wherein the adaptively creating is performed based on a prospective update of caches satisfying the data sharing context.