Zone consistency

US9495293B1 · kind B1 · utility

Assignee

• EMC IP Holding Company LLC · US

Inventors

• Shashwat Srivastav · Seattle, US
• Sriram Sankaran · Bellevue, US
• Subba R. Gaddamadugu · Westborough, US
• Peter M. Musial · Arlington, US
• Andrew D. Robertson · Washington, US
• Huapeng Yuan · Seattle, US
• Qi Zhang · Beijing, CN
• Jun Luo · Chongqing, CN
• Vishrut Shah · Redmond, US
• Chen Wang · Beijing, CN

Key dates

• Filing date: Jun 30, 2014
• Grant date: Nov 15, 2016
• Expiry date: Jan 27, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L67/1095
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A computer implemented method, system, and computer program product for enabling consistency between zones comprising creating a lease agreement between a first zone and at least a second zone; wherein the lease indicates that the first zone is the owner of an object; wherein the lease agreement dictates that a notification is to be sent before a cached object in the first zone is updated if the lease is still valid; wherein the lease indicates the first zone is to send a heartbeat to the second zone within the predetermined period of time if the object has not been changed and the lease is still valid; and setting up heartbeats from the first zone to at least a second zone within a predetermined amount of time; wherein the heartbeat indicates that the lease is still valid and the object has not been changed.