The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2014
Filed:
Sep. 07, 2012
Gregory Thiel, Black Diamond, WA (US);
Alexander R. Wetmore, Seattle, WA (US);
Ayla Kol, Sammamish, WA (US);
Rebecca Benfield, Seattle, WA (US);
James Kleewein, Kirkland, WA (US);
Naresh Sundaram, Redmond, WA (US);
Yogesh Bansal, Redmond, WA (US);
Mark Wistrom, Redmond, WA (US);
Manoharan Kuppusamy, Redmond, WA (US);
Gregory Thiel, Black Diamond, WA (US);
Alexander R. Wetmore, Seattle, WA (US);
Ayla Kol, Sammamish, WA (US);
Rebecca Benfield, Seattle, WA (US);
James Kleewein, Kirkland, WA (US);
Naresh Sundaram, Redmond, WA (US);
Yogesh Bansal, Redmond, WA (US);
Mark Wistrom, Redmond, WA (US);
Manoharan Kuppusamy, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
High availability architecture that employs a mid-tier proxy server to route client communications to active data store instances in response to failover and switchover. The proxy server includes an active manager client that interfaces to an active manager in each of the backend servers. State information and configuration information are maintained separately and according to semantics consistent with needs of corresponding data, the configuration information changing less frequently and more available, the state information changing more frequently and less available. The active manager indicates to the proxy server which of the data storage instances is the currently the active instance. In the event that the currently active instance is inactive, the proxy server selects a different backend server that currently hosts the active data store instance. Client communications are then routed to the different backend server with minimal or no interruption to the client.