Data replicating system, data replicating method, node device, management device and computer readable medium
US9836361B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2013 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Mar 13, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Each node constituting this data replicating system returns a response to a data operation requesting device upon having written, into a temporary storage device of the node itself, a post-update log of a data record for which an operation requested by a data operation request was executed. Furthermore, when a checkpoint is reached, each node updates a data record storage unit of the node itself on the basis of the post-update log of the data record stored in the temporary storage device of the node itself, writes the post-update log of the data record stored in the temporary storage device of the node itself into an update history storage unit of the node itself, and writes, into a shared storage device shared with other nodes, checkpoint information having information for specifying a latest post-update log written into the update history storage unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.