Mongodb, Inc.

Therese Avitabile

Eliot Horowitz

Dwight Allen Merriman

Andrew Michalski Schwerin

Cheahuychou Mao

Amirsaman Memaripour

Misha Tyulenev

Garaudy Etienne

Jeff Yemin

Jason Carey

Andrew Michalski

Ben Caimano

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.

Hedged reads

According to one aspect, a distributed database system is configured to manage write operations received from database clients and execute the write operations at primary nodes. The system then replicates received operations across a plurality of secondary nodes. Write operation can include safe write requests such that the database guaranties the operation against data loss once acknowledged. In some embodiments, the system incorporates an enhanced arbiter role the enables the arbiter to participate in cluster-wide commitment of data. In other embodiments, the enhanced arbiter role enables secondary nodes to evaluate arbiter operations logs when determining election criteria for new primary nodes.

System and method for augmenting consensus election in a distributed database

Growing community of inventors

New York, NY, United States of America

Therese Avitabile