Bulk deletion through segmented files
US8914330B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Oct 1, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/162
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A mechanism is provided that aggregates data in a way that permits data to be deleted efficiently, while minimizing the overhead necessary to support bulk deletion of data. A request is received for automatic deletion of segments in a container and a waterline is determined for the container. A determination is made if at least one segment in the container falls below the waterline. Finally, in response to one segment falling below the waterline, the segment from the container is deleted. Each object has an associated creation time, initial retention value, and retention decay curve (also known as a retention curve). At any point, based on these values and the current time, the object's current retention value may be computed. The container system continually maintains a time-varying waterline: at any point, objects with a retention value below the waterline may be deleted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.