Patents by Inventor Alexandru C. Chirica

Alexandru C. Chirica 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).

  • Mirroring file data
    Patent number: 9053123
    Abstract: High availability and disaster recovery can be achieved within a database management system by detecting which parts of a file have changed and sending the changed parts to secondary servers, without sending the entire file that has experienced the changes. A log cracker reads data from a transaction log that stores records from a database and a separately maintained file system. The log cracker sends mirror commands with some of the transaction log data to the file system to initiate mirroring of the data from the file system to secondary servers. The log data is then subsequently sent to the secondary servers as well, to enable identification of changed data without having to transfer the entire file that has been changed.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 9, 2015
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Pradeep Jnana Madhavarapu, Priyank Porwal, Vaibhav Kamra, Alexandru C. Chirica, Cristian Diaconu, Jun Fang, Srinivasmurthy P. Acharya
  • Mirroring file data
    Patent number: 8401998
    Abstract: The present invention extends to methods, systems, and computer program products for mirroring file data. Generally, high availability and disaster recovery (“HADRON”) is achieved within a database management system by detecting which parts of a file have changed and sending the changed parts to secondaries. Adjacent or partially overlapping parts of a file can coalesce to form larger chunks of changed data. Coalescing reduces the overall number of chunks that are tracked.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: March 19, 2013
    Assignee: Microsoft Corporation
    Inventors: Pradeep Jnana Madhavarapu, Priyank Porwal, Vaibhav Kamra, Alexandru C. Chirica, Cristian Diaconu, Jun Fang, Srinivasmurthy P. Acharya
  • MIRRORING FILE DATA
    Publication number: 20120059798
    Abstract: The present invention extends to methods, systems, and computer program products for mirroring file data. Generally, high availability and disaster recovery (“HADRON”) is achieved within a database management system by detecting which parts of a file have changed and sending the changed parts to secondaries. Adjacent or partially overlapping parts of a file can coalesce to form larger chunks of changed data. Coalescing reduces the overall number of chunks that are tracked.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 8, 2012
    Applicant: Microsoft Corporation
    Inventors: Pradeep Jnana Madhavarapu, Priyak Porwal, Vaibhav Kamra, Alexandru C. Chirica, Cristian Diaconu, Jun Fang, Srinivasmurthy P. Acharya