Memory-based on-demand data page generation
US9817587B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2015 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Jan 14, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2358
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data store maintaining data may implement memory-based on-demand data page generation. Log records may be maintained in system memory according to a version threshold for data pages of data stored in persistent storage. When a request for a version of a particular data page is received that is within the version threshold, the data page may be obtained from persistent storage and log records associated with the data page may be applied to the data page to generate the requested version of the data page. The version threshold for the data pages may change, and log records in system memory may be identified for coalesce operations. The coalesce operations may be efficiently performed (e.g., in the background), updating the data pages in persistent storage to include the changes of the identified log records and space in system memory for the identified log records may be reclaimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.