Package me.magnet.consultant

Class RoutingStrategies

java.lang.Object

me.magnet.consultant.RoutingStrategies

public class RoutingStrategies
extends Object

A class which has a set of RoutingStrategies which can be used for client-side load balancing.

Field Summary

Fields

Modifier and Type	Field	Description
static RoutingStrategy	NETWORK_DISTANCE	A RoutingStrategy which returns service instances in order of network distance (order from nearest to farthest).
static RoutingStrategy	RANDOMIZED	A RoutingStrategy which emits the service instances in a random order.
static RoutingStrategy	RANDOMIZED_WEIGHTED_DISTANCE	A RoutingStrategy which returns service instances in a randomized order of network distance (order from nearest to farthest).
static RoutingStrategy	ROUND_ROBIN	A RoutingStrategy which returns service instances in a round robin manner.

Method Summary

Modifier and Type	Method	Description
static RoutingStrategy	randomizedWeightedDistance(double threshold)	Creates a new RoutingStrategy which returns service instances in a randomized order but prefers closer service instances (in terms of network distance).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NETWORK_DISTANCE

public static final RoutingStrategy NETWORK_DISTANCE

A RoutingStrategy which returns service instances in order of network distance (order from nearest to farthest).

RANDOMIZED_WEIGHTED_DISTANCE

public static final RoutingStrategy RANDOMIZED_WEIGHTED_DISTANCE

A RoutingStrategy which returns service instances in a randomized order of network distance (order from nearest to farthest). Closer instances have a better chance at being emitted.

ROUND_ROBIN

public static final RoutingStrategy ROUND_ROBIN

A RoutingStrategy which returns service instances in a round robin manner. It ensures that any ServiceLocator emitted through this RoutingStrategy doesn't emit the same instance at the same time in this JVM, but instead emits a different not-yet emitted (for that particular ServiceLocator) service instance.

RANDOMIZED

public static final RoutingStrategy RANDOMIZED

A RoutingStrategy which emits the service instances in a random order.

Method Detail

randomizedWeightedDistance

public static RoutingStrategy randomizedWeightedDistance(double threshold)

Creates a new RoutingStrategy which returns service instances in a randomized order but prefers closer service instances (in terms of network distance). The closest instance has a specified chance of being emitted first, and if that chance is not met, the second closest has that same chance of being emitted, and if that chance is not met... and so on.

Parameters:

threshold - The chance of emitting a particular service instance.

Returns:

The RoutingStrategy with the specified chance.