Patents by Inventor Leonidas Rigas

Leonidas Rigas 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).

  • Patent number: 9274906
    Abstract: Embodiments of the present invention relate to invoking and managing a failover of a storage account between partitions within a distributed computing environment, where each partition represents a key range of data for the storage account. The partitions affected by the failover include source partitions hosted on a primary storage stamp and destination partitions hosted on a secondary storage stamp, where the storage account's data is being actively replicated from the primary to the secondary storage stamp. Upon receiving a manual or automatic indication to perform the failover, configuring the source partitions to independently perform flush-send operations (e.g., distributing pending messages as a group) and then configuring the destination partitions to independently perform flush-replay operations (e.g., aggressively replaying currently pending transactions).
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: March 1, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Bradley Gene Calder, Niranjan Nilakantan, Shashwat Srivastav, Jiesheng Wu, Arild Einar Skjolsvold, Maxim Mazeev, Abdul Rafay Abbasi, Shane Mainali, Hemal Khatri, Ju Wang, Padmanabha Chakravarthy Uddaraju, Leonidas Rigas
  • Publication number: 20140289554
    Abstract: Embodiments of the present invention relate to invoking and managing a failover of a storage account between partitions within a distributed computing environment, where each partition represents a key range of data for the storage account. The partitions affected by the failover include source partitions hosted on a primary storage stamp and destination partitions hosted on a secondary storage stamp, where the storage account's data is being actively replicated from the primary to the secondary storage stamp. Upon receiving a manual or automatic indication to perform the failover, configuring the source partitions to independently perform flush-send operations (e.g., distributing pending messages as a group) and then configuring the destination partitions to independently perform flush-replay operations (e.g., aggressively replaying currently pending transactions).
    Type: Application
    Filed: June 9, 2014
    Publication date: September 25, 2014
    Inventors: BRADLEY GENE CALDER, NIRANJAN NILAKANTAN, SHASHWAT SRIVASTAV, JIESHENG WU, ARILD EINAR SKJOLSVOLD, MAXIM MAZEEV, ABDUL RAFAY ABBASI, SHANE MAINALI, HEMAL KHATRI, JU WANG, PADMANABHA CHAKRAVARTHY UDDARAJU, LEONIDAS RIGAS
  • Patent number: 8751863
    Abstract: Embodiments of the present invention relate to invoking and managing a failover of a storage account between partitions within a distributed computing environment, where each partition represents a key range of data for the storage account. The partitions affected by the failover include source partitions hosted on a primary storage stamp and destination partitions hosted on a secondary storage stamp, where the storage account's data is being actively replicated from the primary to the secondary storage stamp. Upon receiving a manual or automatic indication to perform the failover, configuring the source partitions to independently perform flush-send operations (e.g., distributing pending messages as a group) and then configuring the destination partitions to independently perform flush-replay operations (e.g., aggressively replaying currently pending transactions).
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: June 10, 2014
    Assignee: Microsoft Corporation
    Inventors: Bradley Gene Calder, Niranjan Nilakantan, Shashwat Srivastav, Jiesheng Wu, Arild Einar Skjolsvold, Maxim Mazeev, Abdul Rafay Abbasi, Shane Mainali, Hemal Khatri, Ju Wang, Padmanabha Chakravarthy Uddaraju, Leonidas Rigas
  • Publication number: 20120303999
    Abstract: Embodiments of the present invention relate to invoking and managing a failover of a storage account between partitions within a distributed computing environment, where each partition represents a key range of data for the storage account. The partitions affected by the failover include source partitions hosted on a primary storage stamp and destination partitions hosted on a secondary storage stamp, where the storage account's data is being actively replicated from the primary to the secondary storage stamp. Upon receiving a manual or automatic indication to perform the failover, configuring the source partitions to independently perform flush-send operations (e.g., distributing pending messages as a group) and then configuring the destination partitions to independently perform flush-replay operations (e.g., aggressively replaying currently pending transactions).
    Type: Application
    Filed: May 23, 2011
    Publication date: November 29, 2012
    Applicant: MICROSOFT CORPORATION
    Inventors: Bradley Gene Calder, Niranjan Nilakantan, Shashwat Srivastav, Jiesheng Wu, Arild Einar Skjolsvold, Maxim Mazeev, Abdul Rafay Abbasi, Shane Mainali, Hemal Khatri, Ju Wang, Padmanabha Chakravarthy Uddaraju, Leonidas Rigas
  • Patent number: 8145761
    Abstract: The claimed subject matter provides a system and/or a method facilitates energy-aware connection distribution among a plurality of servers in a cluster. A set of busy servers in the cluster can be provided that each handle a high number of connections. In addition, a set of tail servers in the cluster can be managed that each maintain a low number of connections. A load skewing component gives priority to at least a subset of the set of busy servers when dispatching new connection requests from a plurality of users. In addition, the load skewing component controls the number of tail servers to maintain a sufficient number for energy-aware operation.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: March 27, 2012
    Assignee: Microsoft Corporation
    Inventors: Jie Liu, Lin Xiao, Jeremy Eric Elson, Suman Kumar Nath, Leonidas Rigas, Feng Zhao, Gong Chen, Wenbo He
  • Patent number: 8051174
    Abstract: The claimed subject matter provides a system and/or a method that facilitates managing a number of active servers in a cluster. A forecast component can predict at least one of login rate or number of connections in the cluster at a future time. A dynamic load analysis component can evaluate dynamic behaviors in login rate and number of connections in the cluster as a result of load dispatching. Moreover, a provisioning component can determine a number of servers in the cluster needed based at least in part on the prediction and dynamic behavior analysis. In addition, the provisioning component can include an additional margin in the number of servers needed in accordance with multiplicative factors.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: November 1, 2011
    Assignee: Microsoft Corporation
    Inventors: Lin Xiao, Jie Liu, Suman Kumar Nath, Leonidas Rigas, Feng Zhao, Gong Chen, Wenbo He
  • Publication number: 20090222544
    Abstract: The claimed subject matter provides a system and/or a method that facilitates managing a number of active servers in a cluster. A forecast component can predict at least one of login rate or number of connections in the cluster at a future time. A dynamic load analysis component can evaluate dynamic behaviors in login rate and number of connections in the cluster as a result of load dispatching. Moreover, a provisioning component can determine a number of servers in the cluster needed based at least in part on the prediction and dynamic behavior analysis. In addition, the provisioning component can include an additional margin in the number of servers needed in accordance with multiplicative factors.
    Type: Application
    Filed: March 3, 2008
    Publication date: September 3, 2009
    Applicant: Microsoft Corporation
    Inventors: Lin Xiao, Jie Liu, Suman Kumar Nath, Leonidas Rigas, Feng Zhao, Gong Chen, Wenbo He
  • Publication number: 20090222562
    Abstract: The claimed subject matter provides a system and/or a method facilitates energy-aware connection distribution among a plurality of servers in a cluster. A set of busy servers in the cluster can be provided that each handle a high number of connections. In addition, a set of tail servers in the cluster can be managed that each maintain a low number of connections. A load skewing component gives priority to at least a subset of the set of busy servers when dispatching new connection requests from a plurality of users. In addition, the load skewing component controls the number of tail servers to maintain a sufficient number for energy-aware operation.
    Type: Application
    Filed: March 3, 2008
    Publication date: September 3, 2009
    Applicant: Microsoft Corporation
    Inventors: Jie Liu, Lin Xiao, Jeremy Eric Elson, Suman Kumar Nath, Leonidas Rigas, Feng Zhao, Gong Chen, Wenbo He
  • Publication number: 20060185018
    Abstract: Systems and methods are described for shielding a vulnerability in an application through disablement of one or more features. In an implementation, a method includes identifying a vulnerability in at least one of a plurality of features for an application module. A communication is formed for receipt by a plurality of clients to shield execution of the application module from the identified vulnerability. The communication describes that the at least one feature is to be disabled from execution in conjunction with the application module.
    Type: Application
    Filed: February 17, 2005
    Publication date: August 17, 2006
    Applicant: Microsoft Corporation
    Inventors: Cesare Saretto, Leonidas Rigas, Paul Paradise, Ranjib Badh, Walter Rader