Caching infrastructure

US8176005B2 · kind B2 · utility

Assignee

• Microsoft Corporation · US

Inventors

• Simon Skaria · Sammamish, US
• Naresh Kannan · Puliyur, IN
• Simon Peter Clarke · Seattle, US
• Miko Arnab Sakhya Singha Bose · San Francisco, US
• Christopher James Antos · Redmond, US
• Mark Rolland Knight · Bellevue, US
• Andrew G. Carlson · Redmond, US
• Don Adam Hedgpeth · Redmond, US
• Mitesh Pankaj Patel · Seattle, US
• Andrew Sean Watson · Seattle, US
• Jonathan Beckett Bailor · Bellevue, US
• Elena Petrova · Redmond, US

Key dates

• Filing date: May 8, 2008
• Grant date: May 8, 2012
• Expiry date: Jun 14, 2029

Classification

• Technology area (CPC —): General

Abstract

Example systems and methods are directed at maintaining and retrieving presence metadata. One example method includes receiving a request from a first client to edit a document file, and sending short-term check out metadata to the first client to begin an editing session. The method also includes writing the transition ID to a transition table stored in a cache, wherein the presence of another transition ID in the cache indicates that a document has switched from a single-client mode to a multi-client mode. An example system includes a processing unit operative to receive a document, the document including short-term check out metadata indicating an editing session has begun, ping a cache to determine if another transition ID is stored in the cache, and send a transition ID to a transition table stored in a cache to switch from a single-client mode to a multi-client mode.