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:
May. 18, 2010
Filed:
Sep. 15, 2005
Applicants:
Michal Cierniak, Campbell, CA (US);
Arnar Mar Hrafnkelsson, Mountain View, CA (US);
Inventors:
Michal Cierniak, Campbell, CA (US);
Arnar Mar Hrafnkelsson, Mountain View, CA (US);
Assignee:
Google Inc., Mountain View, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A generational journaling data store can synchronize write accesses so that previous generation masters do not corrupt current generation journals. A master maintains a journal and accesses a data store on behalf of clients. When a master disappears a new master must take its place to ensure reliable and continuous access to the data store. Without generations, a previous master can reappear and corrupt journals and data stores. With generations, a newer generation journal can not be corrupted by a previous generation master.