Amazon Technologies, Inc.

Inmobi, Pte Ltd.

Ameya Shrinivas Sakhalkar

Raghunath Thondanur Mandayam

Rahul Kamalkishore Agrawal

Mahesh Dhabade

Abhijit Chaudhuri

Visakh Sakthidharan Nair

Vinesh Reddy Sunku

Preeti Gupta

Shubham Chaturvedi

Sonia Goyal

Raghavendra Mohan Dani

Nikhil Baliga

Shashank Vilas Likhite

A method and system for determining a suspected data source among one or more data sources reporting geo coordinate data in a location based services network is disclosed. In some embodiments, the method includes, receiving geo coordinates of a user device reported by the one or more data sources over a period of time, calculating a notional speed between geo coordinates reported at two consecutive times, flagging simultaneously, one or more data sources that reported the geo coordinates at the two consecutive times resulting in a notional speed that exceeds a predefined notional speed, and analysing a data on at least one of, the number of instances of geo coordinates reported by a data source, the number of instances a data source was flagged, the data sources that were also flagged simultaneously with each flagging, for determining the suspect source of data.

Method and system for determining a suspect data source in a location based services network

Methods, systems, and computer-readable media for record-by-record live migration using a lock store are disclosed. Migration of a data set comprises acquiring a migration lock from a lock store for an individual record being migrated. An instance of the record is then stored in the destination, and the record is deleted from the source. Subsequently, the migration lock is deleted from the lock store or otherwise released. During the migration, a rate at which insert requests are directed to the destination is dialed up. During the process of updating an insert treatment configuration across a distributed set of migration router instances, an insert lock is acquired from the lock store for each record being inserted. Also metadata is stored indicating a determined location for the record being inserted. Any subsequent requests to insert a record with a same key are inserted at the indicated determined location.

Record-by-record live migration using a lock store

Methods, systems, and computer-readable media for live migration for highly available data stores are disclosed. Migration of a data set from a first data store to a second data store is initiated and comprises a backfill of records to the second data store. During a window of time before the migration is complete, a read request for a first record is received. A response representing an authoritative version of the first record is generated using a copy of the first record in the first data store and a copy of the first record in the second data store. A write request for a second record is received during the window of time. A lock is acquired for the second record, and the write request is performed using a copy of the second record in the first data store and a copy of the second record in the second data store.

Live migration for highly available data stores

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Pune, India

Ameya Shrinivas Sakhalkar