Apparatus, method and article of manufacture for servicing client requests on a network

• US 6,173,311 B1
• Filed: 02/13/1997
• Issued: 01/09/2001
• Est. Priority Date: 02/13/1997
• Status: Expired due to Term

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: PointCast, Inc. (Warner Bros. Discovery, Inc.)
• Inventors: Dayal, Vibha, Collins, Harry, Hassett, Gregory P.
• Primary Examiner(s): Dinh, Dung C.
• Application Number:
  US08/800,153
• Time in Patent Office: 1,426 Days
• Field of Search: 395/200.47, 395/200.48, 395/200.49, 707/201, 707/202, 707/203, 709/217, 709/218, 709/219, 709/202, 709/105
• US Class Current: 709/202
• CPC Class Codes: G06F 16/10 File systems; File servers
• 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 67/1014 based on the content of a request
• CPC Class Codes: H04L 67/1034 Reaction to server failures by a load balancer
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

Abstract

A server services client requests in an improved manner by a utilizing a combination of sending an id of the last article that has been previously sent to the client, load balancing servers to provide efficient servicing of clients and providing redundant servers so that a failure of any one server does not result in the termination of server services to clients.

Claims

1. A server computer for communicating with a client computer via a network, the server computer comprising:

a server interface for receiving a client computer request including a category identifier associated with a category of the client computer request and a last file identifier of a last file previously sent to the client computer, the client computer request being created by the client computer using information from a local file residing on the client computer; and

a request processing component for receiving the client computer request from the server interface and for assigning the client computer request to one of a plurality of agents operating on the server based upon the category identifier, the request processing component transmitting information provided by the one of the plurality of agents to the client computer, said plurality of agents utilizing the last file identifier and the information from the local file to retrieve information from the server computer, to redirect client computer requests to a certain computer, to provide statistical information and to enable an internal organization channel.

2. The server computer as recited in claim 1, in which a plurality of server computers are utilized for servicing client computer requests and load balancing is performed by selecting a server computer with the lightest load to service a client computer request.

3. The server computer as recited in claim 1, in which a plurality of server computers are utilized for servicing client computer requests and failure of a first server computer triggers servicing of a client computer request by a second server computer.

4. The server computer as recited in claim 1, wherein the network uses a TCP/IP compliant protocol for transmissions.

5. The server computer as recited in claim 1, in which the client computer transmits a http proxy_GET request to the server computer to initiate redirection.

6. The computer system as recited in claim 5, including a private channel between the client computer and the server computer.

7. The server computer as recited in claim 1, in which the server computer receives requests, processes the requests and returns information to the client computer.

8. A method for servicing a client computer request by a server computer communicating with a client computer via a network, comprising:

creating the client computer request using information from a local file residing on the client computer;

receiving the client computer request by the server computer, the client computer request including a category identifier associated with a category of the client computer request and a last file identifier of a last file previously sent to the client computer;

assigning the client computer request to one of a plurality of agents based upon the category identifier, said plurality of agents operating on the server computer to retrieve information from the server computer, to redirect client computer requests to a certain computer, to provide statistical information and to enable an internal organization channel; and

processing the client computer request by the one of the plurality of agents utilizing the last file identifier and the information from the local file.

9. The method as recited in claim 8, in which a plurality of server computers are utilized for servicing client computer requests and load balancing is performed by selecting a server computer with the lightest load to service a client computer request.

10. The method as recited in claim 8, in which a plurality of server computers are utilized for servicing client computer requests and failure of a first server computer triggers servicing of a client computer request by a second server computer.

11. The method as recited in claim 8, wherein the network uses a TCP/IP compliant protocol for transmissions.

12. The method as recited in claim 8, in which the client computer transmits a http proxy_GET request to the server computer to initiate redirection.

13. The method as recited in claim 12, wherein a private channel is provided for coupling the client computer and the server computer.

14. The method as recited in claim 8, in which the server computer receives requests, processes the request and returns information to the client computer.

15. A computer-readable medium comprising instructions, which when executed on a processor, perform method for servicing a client computer request by a server computer communicating with a client computer via a network, comprising:

creating the client computer request using information from a local file residing on the client computer;

receiving the client computer request by the server computer, the client computer request including a category identifier associated with a category of the client computer request and a last file identifier of a last file previously sent to the client computer;

assigning the client computer request to one of a plurality of agents based upon the category identifier, said plurality of agents operating on the server computer to retrieve information from the server computer, to redirect client computer requests to a certain computer, to provide statistical information and to enable an internal organization channel; and

processing the client computer request by the one of the plurality of agents utilizing the last file identifier and the information from the local file.

16. The computer-readable medium as recited in claim 15, in which a plurality of server computers are utilized for servicing client computer requests and load balancing is performed by selecting a server computer with the lightest load to service a client computer request.

17. The computer-readable medium as recited in claim 15, in which a plurality of server computers are utilized for servicing client computer requests and failure of a first server computer triggers servicing of a client computer request by a second server computer.

18. The computer-readable medium as recited in claim 15, wherein the network uses a TCP/IP complaint protocol for transmissions.

19. The computer-readable medium as recited in claim 15, in which the client computer transmits a http proxy_GET request to the server computer to initiate redirection.

20. The computer-readable medium as recited in claim 19, including supporting a private channel between the client computer and the server computer.

21. The computer-readable medium as set forth in claim 15, in which the server computer receives requests, processes the requests and returns information to the client computer.