Patents by Inventor Josephus Cornelius Willibrordus Visser

Josephus Cornelius Willibrordus Visser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Failover operation on a replicated distributed database system while maintaining access invariance
    Patent number: 8856583
    Abstract: Systems and methods are disclosed herein for performing a failover operation between a first distributed database cluster and a second distributed database cluster. In one aspect, the method includes blocking a plurality of software processes from making any new access requests to the first distributed database cluster and completing a current access request to the first distributed database cluster that was initiated by one of the plurality of software processes before the failover operation was initiated, waiting for data to replicate from the first distributed database cluster to the second distributed database cluster, wherein replicating includes any changes to the data from the current access request, and allowing the plurality of software processes to make the new access requests to the second distributed database cluster once the replicating has completed.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: October 7, 2014
    Assignee: Google Inc.
    Inventors: Josephus Cornelius Willibrordus Visser, Marcin Michalski, Raymond Blum, Stefan Valentin Gheorghita, Johan Marinius Andersen