Mongodb, Inc.

Misha Tyulenev

Andrew Michalski Schwerin

Therese Avitabile

Mark Porter

Eric Andrew Milkie

Louisa Berger

Judah Schvimer

Susan LoVerso

Esha Maharishi

Donald Anderson

Keith Smith

Garaudy Etienne

Jeff Yemin

Cheahuychou Mao

Amirsaman Memaripour

Ben Caimano

Jason Carey

A Jesse Jiryu Davis

Jack Wearden

Matthew Russotto

Gregory Banks

Tomer Yakir

According to aspects of the disclosure, there is provided a scalable cloud distributed database system for hosting data of multiple database tenants. In some embodiments, the database may be serverless. The serverless database may be configured to automatically and dynamically match resources to workload demands for tenants of the database. Databases described herein may include replica sets hosting multiple tenants. Tenants may be migrated from one replica set to another replica set based on usage. Usage of tenants may be throttled during migration between replica sets. Tenants with lower usage may be selected for migration between replica sets. During migration, files containing both a document and a history of updates to the document may be migrated. Databases described herein may include multiple storage tiers having different read and/or write speeds.

Systems and methods for scalable database hosting data of multiple database tenants

Systems and methods are provided for managing read requests in a database system. The same read request is communicated to multiple nodes to reduce long tail latency. If the read request is communicated to two nodes and the first node is experiencing a communication failure, the read request is serviced by the second node. Once a response is received from the second node, the read request to the first node can be canceled.

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Brooklyn, NY, United States of America

Misha Tyulenev