Microsoft Technology Licensing, LLC

Leonidas Rigas

Jie Jerry Liu

Feng Zhao

Bradley Gene Calder

Suman Kumar Nath

Shane Kumar Mainali

Ju Wang

Shashwat Srivastav

Jiesheng Wu

Arild Einar Skjolsvold

Niranjan Nilakantan

Hemal Khatri

Padmanabha Chakravarthy Uddaraju

Abdul Rafay Abbasi

Maxim Mazeev

Lin Xiao

Wenbo He

Gong Chen

Jeremy Eric Elson

Embodiments of the present invention relate to invoking and managing a failover of a storage account between partitions within a distributed computing environment, where each partition represents a key range of data for the storage account. The partitions affected by the failover include source partitions hosted on a primary storage stamp and destination partitions hosted on a secondary storage stamp, where the storage account's data is being actively replicated from the primary to the secondary storage stamp. Upon receiving a manual or automatic indication to perform the failover, configuring the source partitions to independently perform flush-send operations (e.g., distributing pending messages as a group) and then configuring the destination partitions to independently perform flush-replay operations (e.g., aggressively replaying currently pending transactions). Upon completing the flush-replay operations, designating the secondary storage stamp as a new primary storage stamp such that live traffic is directed to the new primary storage stamp.

Implementing failover processes between storage stamps

The claimed subject matter provides a system and/or a method facilitates energy-aware connection distribution among a plurality of servers in a cluster. A set of busy servers in the cluster can be provided that each handle a high number of connections. In addition, a set of tail servers in the cluster can be managed that each maintain a low number of connections. A load skewing component gives priority to at least a subset of the set of busy servers when dispatching new connection requests from a plurality of users. In addition, the load skewing component controls the number of tail servers to maintain a sufficient number for energy-aware operation.

Load skewing for power-aware server provisioning

The claimed subject matter provides a system and/or a method that facilitates managing a number of active servers in a cluster. A forecast component can predict at least one of login rate or number of connections in the cluster at a future time. A dynamic load analysis component can evaluate dynamic behaviors in login rate and number of connections in the cluster as a result of load dispatching. Moreover, a provisioning component can determine a number of servers in the cluster needed based at least in part on the prediction and dynamic behavior analysis. In addition, the provisioning component can include an additional margin in the number of servers needed in accordance with multiplicative factors.

Framework for joint analysis and design of server provisioning and load dispatching for connection-intensive server

Growing community of inventors

Kirkland, WA, United States of America

Leonidas Rigas