Apparatus and method for data consistency in a proxy cache
US7552223B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2003 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Nov 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/5682
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an embodiment, a method to provide data consistency in a storage system, includes: providing, by a server to a proxy cache, a lock associated with a delegated file in the server; in response to a write request from a client, modifying data in a cached copy of the delegated file in the proxy cache; revoking, by the server, the lock associated with the delegated file, in response to a request from another device to access the delegated file so that the delegated file is now a formerly delegated file; and writing the modified data to the formerly delegated file in the server to update the formerly delegated file; and permitting access to the formerly delegated file by the another device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.