Salesforce, Inc.

Zhaohui George Yao

Mukesh Burgupalli

Sheng Qiao

Abhishek Chaturvedi

Kim S Lee

Jeff Zhu

An online system performs upgrades of replicated databases. The online system stores data in a primary site and a secondary site. The primary site comprising databases used to process client requests and a secondary site comprising databases used as standby. The online system upgrades databases of both sites by upgrading the secondary site, switching client requests to the secondary site while using the databases of primary site as standby databases. The online system then upgrades the primary site. The process allows the online system to upgrade databases with small down time.

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Leesburg, VA, United States of America

Zhaohui George Yao