The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2009
Filed:
Oct. 07, 2005
David B. Lomet, Redmond, WA (US);
Mark R. Tuttle, Arlington, MA (US);
David B. Lomet, Redmond, WA (US);
Mark R. Tuttle, Arlington, MA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Logical logging to extend recovery is described. In one aspect, a dependency cycle between at least two objects is detected. The dependency cycle indicates that the two objects should be flushed simultaneously from a volatile main memory to a non-volatile memory to preserve those objects in the event of a system crash. One of the two objects is written to a stable of to break the dependency cycle. The other of the two objects is flushed to the non-volatile memory. The object that has been written to the stable log is then flushed to the stable log to the non-volatile memory.