Microsoft Technology Licensing, LLC

Zach Rosenfield

Alexander Hopmann

Jason Matthew Cahill

Balinder Malhi

Marc Keith Windle

Erick Raymundo Lerma

Eric B Fox

Patrick Simek

Doron Bar-Caspi

Ricardo Prates De Oliveira

Marc Windle

Arshish C Kapadia

Tarkan Sevilmis

Jonathan M Luk

Kshamta Jerath

Tittu Jose

Vipins Gopinadhan

David Paul Harris Gorbet

Michelle Lee Dauphiny

Joshua Calvin Jenkins

Vipins Gopinadham

An online service includes databases that are upgraded while still processing requests. For example, web servers continue to request operations on the database while it is being upgraded. The schema of the database is upgraded before the web servers are upgraded to utilize the upgraded schema. Changes that are made to the upgraded schema are backwards compatible with the schema being used during the upgrade process. Restrictions are placed on the operations performed on the database during the upgrade process. After upgrading the schema, the web servers of the online service are upgraded to use the upgraded schema.

Online database availability during upgrade

An online service includes managed databases that include one or more tenants (e.g. customers, users). A multi-tenant database may be split between two or more databases while the database being split continues processing requests. For example, web servers continue to request operations on the database while content is being moved. After moving the content, tenant traffic is automatically redirected to the database that contains the tenant's content.

Dynamically splitting multi-tenant databases

A cloud manager assists in deploying and managing networks for an online service. The cloud manager system receives requests to perform operations relating to configuring, updating and performing tasks in networks that are used in providing the online service. The management of the assets may comprise deploying machines, updating machines, removing machines, performing configuration changes on servers, Virtual Machines (VMs), as well as performing other tasks relating to the management. The cloud manager is configured to receive requests through an idempotent and asynchronous application programming interface (API) that can not rely on a reliable network.

Managing networks and machines for an online service

A machine manager controls the deployment and management of machines for an online service. The machine manager is configured to manually/automatically deploy farms, upgrade farms, add machines, remove machines, start machines, stop machines, and the like. The machine manager keeps track of the locations of the machines, the roles of the machines within the networks, as well as other characteristics relating to the machines (e.g. health of the machines). Instead of upgrading software on the machines in a farm that are currently handling requests, one or more machines are configured in a new farm with the selected disk images and then the requests are moved from the old farm to the new farm.

Machine manager for deploying and managing machines

A machine manager controls the deployment and management of machines (physical and virtual) for an online service. Multi-tier server groups are arranged in farms that each may include different configurations. For example, their may be content farms, federated services farms and SQL farms that are arranged to perform operations for the online service. When the multiple farms are upgraded, new farms are deployed and the associated content databases from the old farms are moved to the newly deployed farms. During the upgrade of the farms, requests may continue to be processed by the farms. The farms may be automatically load balanced during an upgrade. As content becomes available on the new farm, requests for the content may be automatically redirected to the new farm.

Upgrade of highly available farm server groups

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Zach Rosenfield