Data replication protocol
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United States of America Patent
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Aug 4, 2009
Grant Date -
Jan 23, 2003
app pub date -
Oct 11, 2001
filing date -
Jul 16, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Data can be replicated over a network using a one or two phase method. For the one phase method, a master server containing an original copy of the data sends a version number for the current state of the data to each slave on the network so that each slave can request a delta from the master. The delta that is requested contains the data necessary to update the slave to the appropriate version of the data. For the two phase method, the master server sends a packet of information to each slave. The packet of information can be committed by the slaves if each slave is able to process the commit.
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