System and method for caching and validating user and command specific server response messages

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 based 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 comprising:

a computer readable medium;

first program instructions for receiving a request message at a server;

second program instructions for generating a user-specific cache file name;

third program instructions for accessing a server based cache with said file name to obtain a cached response message;

fourth program instructions for validating said cached response message; and

fifth program instructions for generating a response message selectively from said cached response message if obtained and validated, otherwise generating and selectively caching said response message; and wherein

said first, second. third, fourth. and fifth program instructions are recorded on said computer readable medium.

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

sixth program instructions for 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;

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

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

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

tenth program instructions for invalidating a cached response messages responsive to a change is said server version;

eleventh program instructions for 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;

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

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

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

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

sixteenth program instructions for invalidating all cached response messages responsive to said server being upgraded; and wherein

said sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, and sixteenth program instructions are recorded on said computer readable medium.