Preventing conflicts in distributed systems
US5802062A · kind A · utility
39Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99952
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A token-based protocol used to prevent conflicts between copies of the same data items residing in different servers of a replicated distributed system is provided. The servers in the system with database replicas are provided with token pointers that are each associated with a token. Token pointers are used to track the current possessor of the token. Whenever a server receives or transfers a token, its corresponding token pointer is updated to reflect which server possesses the token. The use of token pointers advantageously eliminates the need for global cooperation by the servers to regenerate a lost token.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.