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Server-side state replication among collaborating world wide web servers

  • US 6,845,390 B1
  • Filed: 11/10/2000
  • Issued: 01/18/2005
  • Est. Priority Date: 11/10/2000
  • Status: Expired due to Fees
First Claim
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1. A computer system for replicating server-side state information among a plurality of collaborating Web servers, the system comprising:

  • a plurality of collaborating Web servers connected to a computer network; and

    a computer program executable by one or more of the collaborating Web servers, wherein the computer program comprises computer instructions for;

    receiving a current request from a remote client entailing an operation on a local copy of server-side state information;

    retrieving information associated with the request indicating the most recent modification to the server-side state information by a collaborating Web server;

    determining, based on the retrieved information, whether the server-side state information has been modified by another collaborating Web server since a previous operation on the local copy of the server-side state information by the client; and

    if the server-side state information has been modified, requesting a copy of the server-side state information from the last collaborating Web server to modify the server-side state information, receiving the requested copy, and storing the received copy as the local copy.

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