Granted Patent B2

US 7,711,799 · App. 10/994,989 · Granted May 4, 2010

Abstract

Claims (30)

1. A method for caching server response data, comprising:

retrieving from a server at least a portion of data requested by a first client node;

separating the retrieved data into a plurality of response packets comprising static fields including static content of the retrieved data and dynamic fields including dynamic content of the retrieved data wherein the dynamic fields are selected from a group comprising: an Ethernet destination MAC address; an IP destination address; a TCP destination port; a TCP seciuence number: TCP headers from the client node request; and a TCP checksum;

adapting the dynamic fields for use in a subsequent response by setting at least one dynamic field of at least one response packet to a pre-defined value; and

caching the static fields and the adapted dynamic fields of the at least one response packet to a memory buffer for use in a response to a request by a second client node.

2. The method of claim 1 , wherein the pre-defined value is zero.

3. The method of claim 1 , further including setting an error detection value in a field of the at least one response packet.

4. The method of claim 3 , wherein the error detection value is a TCP checksum value.

5. The method of claim 1 , in response to the second client node request, further comprising:

updating at least one cached dynamic field with a dynamic content associated with the second client node request;

adjusting incrementally a TCP checksum value of at least one response packet wherein the at least one response packet includes the at least one updated dynamic field; and

providing to the second client node the at least one response packet having the incrementally adjusted TCP checksum value.

6. The method of claim 1 , wherein, if the dynamic fields include TCP headers, the method further comprising caching N copies of the at least one response packet, wherein each copy includes a different combination of at least some of TCP headers associated with the at least one response packet and wherein N is a number of all possible combinations of the TCP headers associated with the at least one response packet.

7. A computer-readable storage medium having computer-executable instructions stored thereon, the computer-executable instructions, when executed by a computer, causing the computer to perform a method for caching at least one response packet on a server, comprising:

retrieving data from a memory database of the server, in response to a first client node request, to include a portion of the retrieved data in the at least one response packet the at least one response packet including static fields including static content of the retrieved data and dynamic fields including dynamic content of the retrieved data wherein the dynamic fields are selected from a group comprising: an Ethernet destination MAC address; an IP destination address; a TCP destination port; a TCP sequence number; TCP headers from the client request; and a TCP checksum;

adapting one or more dynamic fields of the at least one response packet for use in a response to at least a second client node request by setting the one or more dynamic fields of the at least one response packet to a pre-defined value; and

caching the adapted one or more dynamic fields and the static fields of the resulting at least one response packet in a memory buffer of the server for use in the response to the at least second client node request.

8. The computer-readable storage medium of claim 7 , wherein the pre-defined value is zero.

9. The computer-readable storage medium of claim 7 , further including setting an error detection value in a field of the at least one response packet.

10. The computer-readable storage medium of claim 9 , wherein the error detection value is a TCP checksum value.

11. The computer-readable storage medium of claim 10 , in response to the second client node request, the method further comprising:

updating values of the one or more dynamic fields of the at least one response packet with dynamic content associated with the second client node request;

adjusting incrementally a TCP checksum value of the at least one response packet; and

providing the at least one response packet having the updated one or more dynamic fields and the incrementally adjusted TCP checksum value to the second client node.

12. The computer-readable storage medium of claim 7 , wherein, if the dynamic fields include TCP headers, the method further comprises: caching N copies of the at least one response packet, wherein each copy includes a different combination of at least some of TCP headers associated with the at least one response packet and wherein N is a number of all possible combinations of the TCP headers associated with the at least one response packet.

13. An apparatus for caching server response data, comprising:

means for retrieving data from a server requested by a first client node;

means for separating the retrieved data into a plurality of response packets comprising static fields including static content of the retrieved data and dynamic fields including dynamic content of the retrieved data wherein the dynamic fields are selected from a group comprising: an Ethernet destination MAC address; an IP destination address; a TCP destination port; a TCP sequence number; TCP headers from the client request; and a TCP checksum;

means for adapting the dynamic fields for use in a subsequent response by setting dynamic fields of at least one response packet to a pre-defined value; and

means for caching the adapted dynamic fields and the static fields of the at least one response packet to a memory buffer for use in a response to a second client node request for at least a portion of the data requested by the first client node.

Assignments (11)