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System and method for maintaining a cluster setup

  • US 9,031,910 B2
  • Filed: 06/24/2013
  • Issued: 05/12/2015
  • Est. Priority Date: 06/24/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • configuring a database system to operate in a first mode that processes first requests in a primary database and replicates results of the first requests as first replicated data in a secondary database, the first requests originating from an application, the primary database and the secondary database conforming to an unmodified requirement of an unmodified version of the application;

    creating secondary shadow data in the secondary database by copying the first replicated data within the secondary database;

    modifying the secondary database to conform to a modified requirement of a modified version of the application;

    creating primary shadow data in the primary database that conforms to the modified requirement of the modified version of the application; and

    configuring the database system to operate in a second mode that;

    processes second requests in the primary database and replicates results of the second requests in the secondary shadow data, the second requests originating from the application, the primary database and the secondary shadow data conforming to the unmodified requirement of the unmodified version of the application; and

    processes third requests in the secondary database and replicates results of the third requests in the primary shadow data, the third requests originating from the modified version of the application, the secondary database and the primary shadow data conforming to the modified requirements of the modified version of the application,the configuring of the database system to operate in the second mode being performed by a processor of a machine.

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