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Consistent message ordering for semi-active and passive replication

  • US 20040103342A1
  • Filed: 07/29/2003
  • Published: 05/27/2004
  • Est. Priority Date: 07/29/2002
  • Status: Active Grant
First Claim
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1. A method for replicating application program objects using semi-active or passive replication, wherein replicas of said objects are distributed across a plurality of networked computers for fault tolerance, said method comprising:

  • creating a primary replica of an object and one or more backup replicas of said object; and

    the step of communicating message ordering information from said primary replica to said backup replicas for achieving consistent message ordering among said primary and backup replicas.

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