Uber Technologies, Inc.

Alexey Pavlenko

Jakob Holdgaard Thomsen

Rene Wenzel Schmidt

Joakim Recht

Dron Rathore

Zura Kutsia

A method or a system for storing a file from a client device in multiple storage locations based on a placement policy with varied constraints for different copies of the file. The placement policy includes sets of policy constraints for different copies, specifying whether each copy should be uploaded synchronously or asynchronously. For each copy of the file, a specific query is generated based on its associated set of policy constraints. These queries are used to evaluate the attributes of various storage locations, selecting a candidate storage location for each copy. The file copies are then stored at their respective selected locations according to the synchronous or asynchronous upload requirement specified by their respective policy constraints.

Storage location selection according to query evaluation

A method for selecting storage locations for storage of data. According to a placement policy, a file is stored in a database comprising a plurality of storage locations. The method includes determining a query for a copy comprising policy constraints in the placement policy and storage location constraints. The method includes extracting one or more data attributes of the file. The method includes determining an attribute set for each storage location including the data attributes and the storage location attributes for each storage location. The method includes identifying a set of one or more candidate storage locations for storage of the copy of the file by evaluating the attribute set for each storage location against the query. The method includes selecting a candidate storage location from the set and providing the copy of the file to the selected candidate storage location for storage.

An online storage system receives a plurality of documents to be stored in a directory. The storage system stores document data from each document in a document database. The storage system generates an entry for each document in an entry table and indexes the documents stored in the directory. The storage system samples a subset of the plurality of documents assigned to the directory in a directory index to determine a sampled subset of the plurality of documents. The storage system indexes the sampled subset in a directory index. The storage system can receive a request, from a client device, to view the indexed documents in the directory. Responsive to the request, the storage system presents the indexed documents in the directory retrieved from the directory index.

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Vilnius, Lithuania

Alexey Pavlenko