Mode

public enum Mode : String

An enumeration of possible read preference modes.

See also

https://docs.mongodb.com/manual/core/read-preference/#read-preference-modes
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  • Default mode. All operations read from the current replica set primary.

    Declaration

    Swift

    case primary
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  • In most situations, operations read from the primary but if it is unavailable, operations read from secondary members.

    Declaration

    Swift

    case primaryPreferred
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  • All operations read from the secondary members of the replica set.

    Declaration

    Swift

    case secondary
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  • In most situations, operations read from secondary members but if no secondary members are available, operations read from the primary.

    Declaration

    Swift

    case secondaryPreferred
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  • Operations read from the member of the replica set with the least network latency, irrespective of the member’s type.

    Declaration

    Swift

    case nearest
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