QoS enum

The quality of service (QoS) levels for MigratoryData messaging.

Inheritance

• Object
• Enum
• QoS

Constructors

QoS()

const

Values

STANDARD → const QoS

//// The QoS.STANDARD should be used for noncritical messages which will not be included in the cache of the MigratoryData cluster. In this way, after a connection recovery, a client will not receive as part of the recovery process the messages with QoS.STANDARD.

Note: This QoS level corresponds to the at-most-once delivery semantics.

/

GUARANTEED → const QoS

//// The QoS.GUARANTEED should be used for critical messages which will be included in the cache of the MigratoryData cluster. In this way, after a connection recovery, a client will receive as part of the recovery process the messages with QoS.GUARANTEED.

Note: This QoS level corresponds to the at-least-once delivery semantics. Also, it might correspond to the exactly-once delivery semantics provided that subscribers are responsible for filtering out duplicate receptions, if it at all matters for the application. Typically, a small buffer containing the identifiers of recently-received messages is sufficient for this task.

/

Properties

hashCode → int

The hash code for this object.

no setter, inherited

index → int

A numeric identifier for the enumerated value.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

values → const List<QoS>

A constant List of the values in this enum, in order of their declaration.