Patents by Inventor David William Spragg

David William Spragg 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).

  • Method and apparatus for a mechanism of disaster recovery and instance refresh in an event recordation system
    Patent number: 10783044
    Abstract: A method and apparatus for a mechanism of disaster recovery and instance refresh in an event recordation system are described. A first request for events associated with a first topic is received. A first set of events associated with the first topic are retrieved from a primary event recordation system. Each event from the first set of events includes a first commit identifier indicating the order with which each event is stored in the primary event recordation system. For each event from the first set of events a first replay identifier is determined based on the first commit identifier and a first value of a low commit identifier. The first replay identifier is exposed to event consumers for identifying the event. In response to the first request each event from the first set of events is transmitted with the replay identifier.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: September 22, 2020
    Assignee: salesforce, inc.
    Inventors: Yingwu Zhao, Samarpan Jain, Hal Scott Hildebrand, Alexey Syomichev, Emin Eliot Gerba, Igor Pesenson, David William Spragg, Jay Hurst, Soumen Bandyopadhyay
  • METHOD AND APPARATUS FOR A MECHANISM OF DISASTER RECOVERY AND INSTANCE REFRESH IN AN EVENT RECORDATION SYSTEM
    Publication number: 20200097373
    Abstract: A method and apparatus for a mechanism of disaster recovery and instance refresh in an event recordation system are described. A first request for events associated with a first topic is received. A first set of events associated with the first topic are retrieved from a primary event recordation system. Each event from the first set of events includes a first commit identifier indicating the order with which each event is stored in the primary event recordation system. For each event from the first set of events a first replay identifier is determined based on the first commit identifier and a first value of a low commit identifier. The first replay identifier is exposed to event consumers for identifying the event. In response to the first request each event from the first set of events is transmitted with the replay identifier.
    Type: Application
    Filed: December 17, 2018
    Publication date: March 26, 2020
    Inventors: Yingwu Zhao, Samarpan Jain, Hal Scott HILDEBRAND, Alexey Syomichev, Emin Eliot Gerba, Igor Pesenson, David William Spragg, Jay Hurst, Soumen BANDYOPADHYAY