Providing the latest version of a data item from an N-replica set
US7631016B2 · kind B2 · utility
1Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 2005 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Nov 28, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Less-restrictive techniques are provided for ensuring that replicated-data systems will never provide out-of-date version of data items. A replicated-data system maintains a version number, a membership group identifier, and a membership count, with each replica of a data item. These values are maintained in such a way as to allow the replicated-data system to reliably satisfy some read requests even though half, or less than half, of the replicas of the data item are available.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.