Fast recovery and replication of key-value stores
US11755427B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2021 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Jun 4, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A key-value engine of a storage system may perform a restart recovery after a system failure. The key-value engine may read a metadata log to locate a latest system checkpoint, and load a page mapping table from the latest system checkpoint. The key-value engine may replay to apply changes to the page mapping table from a system transaction log starting from a system transaction replay starting point. The key-value engine may further form one or more read-only replicas using an underlying file stream opened in a read-only mode during the recovery after the system failure to further facilitate fast recovery and provide fast response to user transactions that conduct read only transactions after the system failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.