Method, system and program product for asynchronously processing requests

• US 7,349,968 B2
• Filed: 07/31/2003
• Issued: 03/25/2008
• Est. Priority Date: 07/31/2003
• Status: Expired due to Fees

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: International Business Machines Corporation
• Inventors: Johnson, David Phillip
• Primary Examiner(s): Lim; Krisna
• Application Number:
  US10/632,073
• Publication Number:
  US 20050027869A1
• Time in Patent Office: 1,699 Days
• Field of Search: 709/227, 709/223, 709/226, 711/133, 711/134, 711/137
• US Class Current: 709/227
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

Under the present invention, a request for a Uniform Resource Locator (URL) is received from a client on a server. Upon receipt, a corresponding session object is obtained, and a response identifier is generated. Based on the response identifier, it is determined whether the URL was previously requested by the client. If not, generation of a final response begins. As the response is being generated, a response refresh header is generated and returned to the client with a temporary response. The response refresh header contains a time value for causing the client to automatically send a subsequent request for the URL. After generation of the final response is complete, it is stored in a cache according to the response identifier. Then, when the subsequent request is received from the client, the final response is retrieved from the cache and served to the client.

Claims

1. A system for asynchronously processing requests, comprising:

an object system for obtaining a session object for a request for a Uniform Resource Locator (URL) received from a client;

a response identifier system for generating a response identifier based on a session identifier and the URL;

a request checking system for determining whether the URL was previously requested in the request by the client; and

a header generation system for generating a response refresh header that includes a time value for causing the client to automatically send a subsequent request for the URL.

2. The system of claim 1, further comprising a response caching system for storing a final response to the request in a cache according to the response identifier.

3. The system of claim 1, further comprising a cache checking system for checking a cache for a final response to the request based on the response identifier, wherein the final response is sent to the client if complete.

4. The system of claim 1, further comprising an output system for sending the response refresh header and a temporary response to the request to the client.

5. The system of claim 1, wherein the response identifier comprises the session identifier and a hash of the URL.

6. The system of claim 1, wherein the request checking system checks a table of the session object to determine whether the URL was previously requested by the client.

7. The system of claim 1, further comprising an input system for receiving the request, and for receiving a subsequent request for the URL from the client after expiration of the time value in the response refresh header.

8. A program product stored on a recordable medium for asynchronously processing requests, which when executed by a computer, comprises:

program code for obtaining a session object for a request for a Uniform Resource Locator (URL) received from a client;

program code for generating a response identifier based on a session identifier and the URL;

program code for determining whether the URL was previously requested in the request by the client; and

program code for generating a response refresh header that includes a time value for causing the client to automatically send a subsequent request for the URL.

9. The program product of claim 8, further comprising program code for storing a final response to the request in a cache according to the response identifier.

10. The program product of claim 8, further comprising program code for checking a cache for a final response to the request based on the response identifier, wherein the final response is sent to the client if complete.

11. The program product of claim 8, further comprising program code for sending the response refresh header and a temporary response to the request to the client.

12. The program product of claim 8, wherein the response identifier comprises the session identifier and a hash of the URL.

13. The program product of claim 8, wherein the program code for determining checks a table of the session object to determine whether the URL was previously requested by the client.

14. The program product of claim 8, further comprising program code for receiving the request, and for receiving a subsequent request for the URL from the client after expiration of the time value in the response refresh header.