Method and system for data element change across multiple instances of data base cache

US6938139B2 · kind B2 · utility

Assignee

• JPMORGAN CHASE BANK, N.A. · US

Inventors

• Lawrence R. Miller · New York, US
• Mike Moore · New York, US
• Zhengrong Chiu · Brooklyn, US
• Hansen WANG · Highland Park, US
• Dave Chapman · New York, US
• Andy Peterson · Snohomish, US

Key dates

• Filing date: Oct 4, 2002
• Grant date: Aug 30, 2005
• Expiry date: Oct 4, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S707/99953
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A method and system for updating and maintaining cache coherency across nodes in a cluster. The method uses a combination of read and write locks on the instances of the cache, with some embodiments using a master locking database. Periodic validations of timestamps are used to identify lack of coherency of the cache, such as resulting from a network failure.