Enhanced multimedia mobile content delivery and message system using cache management

• US 20020099785A1
• Filed: 06/21/2001
• Published: 07/25/2002
• Est. Priority Date: 11/14/2000
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Bitfone Corp. (HP Inc.)
• Inventors: Teeple, Doug
• Granted Patent: US 6,785,707 B2
• Time in Patent Office: Days
• US Class Current: 709/214
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/1012 based on compliance of requirements or conditions with available server resources
• CPC Class Codes: H04L 67/288 Distributed intermediate devices, i.e. intermediate devices for interaction with other intermediate devices on the same level
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/565 Conversion or adaptation of application format or content adding application control or application functional data H04L67/561
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A method and system are provided for retrieving a Web page in a multiple cache networking system. Data requested to be cached by browsers is cached among a plurality of processors in a multiple cache networking system. A request for cached data is received from a browser. A determination is made as to which of the plurality of processors are operative. A load level of each of the operative processors is then determined. Each of the operative processors is queried to locate the requested cached data. An address of the operative processor having the requested cached data is outputted.

Claims

1. A method for retrieving a Web page in a multiple cache networking system, the method comprising the steps of:

caching data requested to be cached by browsers among a plurality of processors in a multiple cache networking system;

receiving a request from a browser for cached data;

determining which of the plurality of processors is operative;

querying a load level of the operative processors to determine which of the operative processors has the lowest load level;

querying each of the operative processors for the requested cached data; and

outputting an address of the operative processor having the requested cached data.

2. The method according to claim 1 further comprising the steps of:

determining whether the load level of the operative processor having the requested cached data exceeds a predetermined threshold value; and

if the load level of the operative processor having the requested cached data does not exceed the threshold value, outputting an address of the operative processor having the lowest load level.

3. The method according to claim 1, wherein the step of caching data requested to be cached by browsers among a plurality of processors includes caching one copy of the data in one of the plurality of processors.

4. The method according to claim 1, wherein the step of querying the load level of the operative processors includes the step of determining which of the operative processors are operating at a full capacity.

5. The method according to claim 1 further comprising the step of outputting an address of the processor with the lowest load level.

6. The method according to claim 1, wherein the determining step includes the step of reading flag values from a table.

7. The method according to claim 6 further comprising the step of storing the flag values in the table.

8. The method according to claim 6, wherein the reading step reads the values in the table periodically.

9. An Internet processor system comprising a plurality of processors wherein each processor includes:

a cache for caching requested data;

an operating module for determining which of the processors are operating;

a load balancing module for determining which processors has the requested cached data and determining which one of the processors has the lowest operating level; and

a rewriter module for rewriting cached data in a markup language.

10. The Internet processor system according to claim 9, wherein the cache stores requested cache data from a plurality of browsers communicating with the Internet.

11. The Internet processor system according to claim 9, wherein the operating module stores data in a table.

12. The Internet processor system according to claim 9, wherein the load balancing module outputs an address of the processor having the requested cached data.

13. The Internet processor system according to claim 12, wherein the load balancing module outputs an address of the processor having the requested cached data and a load level below a predetermined threshold value.

14. The Internet processor system according to claim 12, wherein the load balancing module outputs an address of the processor having the lowest load level.

15. The Internet processor system according to claim 11, wherein each processor sets a flag in the table.

16. The Internet processor system according to claim 15, wherein the table is a heart beat table.

17. The Internet processor system according to claim 15, wherein the values stored in the table are reset periodically.

18. The Internet processor system according to claim 9, wherein the rewriter module rewrites image, sound and anchor references.

19. The Internet processor system according to claim 9, wherein the rewriter module communicates with a reformatting module to reformat the requested cached data.

20. A machine-readable medium having processing instructions stored thereon for execution by a processor to perform a method comprising:

caching data requested to be cached by browsers among a plurality of processors in a multiple cache networking system;

receiving a request from a browser for cached data;

determining which of the plurality of processors is operative;

querying a load level of the operative processors to determine which of the operative processors has the lowest load level;

querying each of the operative processors for the requested cached data; and

outputting an address of the operative processor having the requested cached data.