Synchronous replication in a distributed storage environment
US9519555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2011 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | Mar 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/855
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention relate to synchronously replicating data in a distributed computing environment. To achieve synchronous replication both an eventual consistency approach and a strong consistency approach are contemplated. Received data may be written to a log of a primary data store for eventual committal. The data may then be annotated with a record, such as a unique identifier, which facilitates the replay of the data at a secondary data store. Upon receiving an acknowledgment that the secondary data store has written the data to a log, the primary data store may commit the data and communicate an acknowledgment of success back to the client. In a strong consistency approach, the primary data store may wait to send an acknowledgement of success to the client until it receives an acknowledgment that the secondary has not only written, but also committed, the data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.