Mongodb, Inc.

Daniel William Gottlieb

Eliot Horowitz

Rostislav Briskin

Andrew Michalski Schwerin

Mark Porter

Siyuan Zhou

Max Jacob Hirschhorn

Judah Schvimer

Jonathan Reams

Xiangyu Yao

Spencer Jackson

Alyson Cabral

Esha Maharishi

Garaudy Etienne

Susan LoVerso

Kaloian Manassiev

A method is provided for resharding a sharded database sharded according to a first shard key. The method includes: receiving, by a processor an instruction to reshard the sharded database; receiving, at the processor, a new shard key to be used in a resharding process to reshard the sharded database; determining, by the processor, whether a duration of unavailability of the sharded database during the resharding process is less than a predetermined amount of time; and automatically performing, by the processor, the resharding process according to the new shard key to produce a resharded database, if the duration of unavailability is less than the predetermined amount of time. The method may be performed without users noticing a significant interruption to read/write operations from/to the database.

Methods and systems for automatically resharding a sharded collection of data

A database system comprising a database comprising a plurality of data storage nodes, the plurality of data storage nodes including a primary storage node and a plurality of secondary storage nodes. The database system may also include at least one processor configured to: perform at least one write command to a secondary storage node of the plurality of secondary storage nodes; and perform at least one backup command, at least partially in parallel with the at least one write command being performed to the secondary storage node, of at least some data from a snapshot of data stored in the secondary storage node. A method for performing at least one backup command in a database at least partially in parallel with the at least one write command being performed.

Systems and methods for non-blocking backups

According to at least one aspect, a database system is provided. The database system includes at least one processor configured to receive a restore request to restore a portion of a dataset to a previous state and, responsive to receipt of the restore request, identify at least one snapshot from a plurality of snapshots of at least some data in the dataset to read based on the restore request and write a portion of the data in the identified at least one snapshot to the dataset to restore the portion of the dataset to the previous state.

Method and apparatus for restoring data from snapshots

Growing community of inventors

Long Island City, NY, United States of America

Daniel William Gottlieb