Database system with active standby and nodes
US8868504B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2008 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | May 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/21
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system includes an active node and a standby node and zero or more replica nodes. Each of the nodes includes a database system, such as an in-memory database system. Client updates applied to the active node are written through to the standby node, and the standby node writes the updates through to a primary database and updates the replica nodes. Commit ticket numbers tag entries in transaction logs and are used to facilitate recovery if either of the active node or the standby node fails. Updates applied to the primary database are autorefreshed to the active node and written through by the active node to the standby node which propagates the updates to the replica nodes. Bookmarks are used to track updated records of the primary database and are used to facilitate recovery if either of the active node or the standby node fails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.