MakeQueryState creates an initialized QueryState.

NewOracleFactory creates an oracle with the given policy.

RegisterPolicy creates a new policy given a function which constructs an OracleFactory.

BinPackingChoice bin-packs the choices.

ClosestChoice chooses the node closest to the current node.

RandomChoice chooses lease replicas randomly.

Config is used to construct an OracleFactory.

QueryState encapsulates the history of assignments of ranges to nodes done by an oracle on behalf of one particular query.

Oracle is used to choose the lease holder for ranges.

OracleFactory creates an oracle for a Txn.

OracleFactoryFunc creates an OracleFactory from a Config.

Policy determines how an Oracle should select a replica.