System and apparatus for optimally trading off the replication overhead and consistency level in distributed applications
US7506011B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2006 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Apr 9, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99955
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems are provided for optimally trading off replication overhead and consistency levels in distributed data replication where nodes are organized in a hierarchy. The root node has the original data that need to be replicated at all other nodes, and the replicated copies have a freshness threshold that must be satisfied. The data are propagated through periodic updates in the hierarchy. Each node periodically sends data to its child nodes. Given the freshness threshold, an algorithm and its distributed protocol can determine the optimal update period for each link of the hierarchy such that the freshness threshold is satisfied for every node and the overall replication overhead is minimized. The systems and methods can be used in any scenario where replicated data have consistency requirements, such as in a replicate overlay assisted resource discovery system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.