System and method for user and command specific place based caching with cache validation

• US 20040215714A1
• Filed: 04/25/2003
• Published: 10/28/2004
• Est. Priority Date: 04/25/2003
• Status: Active Grant

• Current Assignee: RPX Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Shalabi, Sami M., Dai, Hong
• Granted Patent: US 7,089,296 B2
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching

Abstract

A system and method is provided for user and command specific place based caching with cache validation, including a server; a database; a server cache; the server responsive to receiving a request message for generating a user-specific cache file name, accessing the server based cache with the file name to obtain a cached response message, validating the cached response message, generating a response message selectively from the cached response message if obtained and validated, and otherwise generating from the database and selectively caching the response message.

Claims

1. A method for user and command specific place based caching with cache validation, comprising:

receiving a request message at a server;

generating a user-specific cache file name;

accessing a server based cache with said file name to obtain a cached response message;

validating said cached response message; and

generating a response message selectively from said cached response message if obtained and validated, otherwise generating and selectively caching said response message.

2. The method of claim 1, further comprising generating said user-specific cache file name as a hashed concatenation of a request argument, a user name, a user'"'"'s name list, and a server build version.

3. The method of claim 2, further comprising inhibiting caching of said response message at said server based cache for responses cached in browser cache.

4. The method of claim 2, further comprising receiving administrator defined specification of cache users, selectively including anonymous user, whose response pages will be cached in said server based cache.

5. The method of claim 2, further comprising invalidating a cached response message responsive to any change in group membership of a member submitting said request message.

6. The method of claim 2, further comprising invalidating a cached response messages responsive to a change is said server build version.

7. The method of claim 2, further comprising invalidating said cached response message for all cached pages of a room having a last modified date later than a last modified date of said cached response message.

8. The method of claim 2, further comprising invalidating said cached response message for all cached pages of a child room for which a change is made to its parent room.

9. The method of claim 2, further comprising invalidating said cached response message for all cached pages of a place for which a change has been made to its members room.

10. The method of claim 2, further comprising invalidating said cached response message for all places on a server having had a change to its setup room.

11. The method of claim 2, further comprising invalidating all cached response messages responsive to said server being upgraded.

12. A system for user and command specific place based caching with cache validation, comprising:

a server;

a database;

a server cache;

said server responsive to receiving a request message for generating a user-specific cache file name, accessing said server based cache with said file name to obtain a cached response message, validating said cached response message, generating a response message selectively from said cached response message if obtained and validated, and otherwise generating from said database and selectively caching said response message.

13. The system of claim 12, further comprising:

a browser;

a browser cache;

said server further for

generating said user-specific cache file name as a hashed concatenation of a request argument, a user name, a user'"'"'s name list, and a server build version;

inhibiting caching of said response message at said server based cache for responses cached in said browser cache;

receiving administrator defined specification of cache users, selectively including anonymous user, whose response pages will be cached in said server based cache;

invalidating a cached response message responsive to any change in group membership of a member submitting said request message;

invalidating a cached response messages responsive to a change is said server version;

invalidating said cached response message for all cached pages of a room having a last modified date later than a last modified date of said cached response message;

invalidating said cached response message for all cached pages of a child room for which a change is made to its parent room;

invalidating said cached response message for all cached pages of a place for which a change has been made to its members room;

invalidating said cached response message for all cached pages of a place for which a change has been made to its members room;

invalidating said cached response message for all places on a server having had a change to its setup room; and

invalidating all cached response messages responsive to said server being upgraded.

14. A program storage device readable by a machine, tangibly embodying a program of instructions executable by a machine to perform method steps for user and command specific place based caching with cache validation, said method comprising:

receiving a request message at a server;

generating a user-specific cache file name;

accessing a server based cache with said file name to obtain a cached response message;

validating said cached response message; and

generating a response message selectively from said cached response message if obtained and validated, otherwise generating and selectively caching said response message.

15. The program storage device of claim 14, sad method further comprising:

generating said user-specific cache file name as a hashed concatenation of a request argument, a user name, a user'"'"'s names list, and a server build version;

inhibiting caching of said response message at said server based cache for responses cached in said browser cache;

receiving administrator defined specification of cache users, selectively including anonymous user, whose response pages will be cached in said server based cache;

invalidating a cached response message responsive to any change in group membership of a member submitting said request message;

invalidating a cached response messages responsive to a change is said server version;

invalidating said cached response message for all cached pages of a room having a last modified date later than a last modified date of said cached response message;

invalidating said cached response message for all cached pages of a child room for which a change is made to its parent room;

invalidating said cached response message for all cached pages of a place for which a change has been made to its members room;

invalidating said cached response message for all cached pages of a place for which a change has been made to its members room;

invalidating said cached response message for all places on a server having had a change to its setup room; and

invalidating all cached response messages responsive to said server being upgraded.

16. A computer program product for user and command specific place based caching with cache validation according to the method comprising:

receiving a request message at a server;

generating a user-specific cache file name;

accessing a server based cache with said file name to obtain a cached response message;

validating said cached response message; and

generating a response message selectively from said cached response message if obtained and validated, otherwise generating and selectively caching said response message.

17. The computer program product of claim 16, said method further comprising:

generating said user-specific cache file name as a hashed concatenation of a request argument, a user name, a user'"'"'s names list, and a server build version;

inhibiting caching of said response message at said server based cache for responses cached in said browser cache;

receiving administrator defined specification of cache users, selectively including anonymous user, whose response pages will be cached in said server based cache;

invalidating a cached response message responsive to any change in group membership of a member submitting said request message;

invalidating a cached response messages responsive to a change is said server version;

invalidating said cached response message for all cached pages of a room having a last modified date later than a last modified date of said cached response message;

invalidating said cached response message for all cached pages of a child room for which a change is made to its parent room;

invalidating said cached response message for all cached pages of a place for which a change has been made to its members room;

invalidating said cached response message for all cached pages of a place for which a change has been made to its members room;

invalidating said cached response message for all places on a server having had a change to its setup room; and

invalidating all cached response messages responsive to said server being upgraded.