java.lang.Object
- akka.routing.ConsistentHashingRoutingLogic

All Implemented Interfaces:

NoSerializationVerificationNeeded, RoutingLogic, java.io.Serializable, scala.Equals, scala.Product
```
public final class ConsistentHashingRoutingLogic
extends java.lang.Object
implements RoutingLogic, scala.Product, java.io.Serializable
```
See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`ConsistentHashingRoutingLogic(ActorSystem system)`	Java API
`ConsistentHashingRoutingLogic(ActorSystem system, int virtualNodesFactor, scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static int`	`$lessinit$greater$default$2()`	Uses consistent hashing to select a routee based on the sent message.
`static scala.PartialFunction<java.lang.Object,java.lang.Object>`	`$lessinit$greater$default$3()`
`static ConsistentHashingRoutingLogic`	`apply(ActorSystem system, int virtualNodesFactor, scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping)`	Uses consistent hashing to select a routee based on the sent message.
`static int`	`apply$default$2()`
`static scala.PartialFunction<java.lang.Object,java.lang.Object>`	`apply$default$3()`
`boolean`	`canEqual(java.lang.Object x$1)`
`ConsistentHashingRoutingLogic`	`copy(ActorSystem system, int virtualNodesFactor, scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping)`
`ActorSystem`	`copy$default$1()`
`int`	`copy$default$2()`
`scala.PartialFunction<java.lang.Object,java.lang.Object>`	`copy$default$3()`
`static Address`	`defaultAddress(ActorSystem system)`
`boolean`	`equals(java.lang.Object x$1)`
`int`	`hashCode()`
`scala.PartialFunction<java.lang.Object,java.lang.Object>`	`hashMapping()`
`int`	`productArity()`
`java.lang.Object`	`productElement(int x$1)`
`java.lang.String`	`productElementName(int x$1)`
`scala.collection.Iterator<java.lang.Object>`	`productIterator()`
`java.lang.String`	`productPrefix()`
`Routee`	`select(java.lang.Object message, scala.collection.immutable.IndexedSeq<Routee> routees)`	Pick the destination for a given message.
`ActorSystem`	`system()`
`java.lang.String`	`toString()`
`static scala.Option<scala.Tuple3<ActorSystem,java.lang.Object,scala.PartialFunction<java.lang.Object,java.lang.Object>>>`	`unapply(ConsistentHashingRoutingLogic x$0)`
`int`	`virtualNodesFactor()`
`int`	`vnodes()`
`ConsistentHashingRoutingLogic`	`withHashMapper(ConsistentHashingRouter.ConsistentHashMapper mapper)`	Java API: Setting the mapping from message to the data to use for the consistent hash key.
`ConsistentHashingRoutingLogic`	`withVirtualNodesFactor(int vnodes)`	Setting the number of virtual nodes per node, used in `ConsistentHash`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface scala.Product
productElementNames

- Constructor Detail
  - ConsistentHashingRoutingLogic
```
public ConsistentHashingRoutingLogic(ActorSystem system,
                                     int virtualNodesFactor,
                                     scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping)
```
  - ConsistentHashingRoutingLogic
```
public ConsistentHashingRoutingLogic(ActorSystem system)
```
    Java API
    
    Parameters:
    
    system - the actor system hosting this router
- Method Detail
  - $lessinit$greater$default$2
```
public static int $lessinit$greater$default$2()
```
    Uses consistent hashing to select a routee based on the sent message.
    There is 3 ways to define what data to use for the consistent hash key.
    1. You can define hashMapping / withHashMapper of the router to map incoming messages to their consistent hash key. This makes the decision transparent for the sender.
    2. The messages may implement ConsistentHashingRouter.ConsistentHashable. The key is part of the message and it's convenient to define it together with the message definition.
    3. The messages can be wrapped in a ConsistentHashingRouter.ConsistentHashableEnvelope to define what data to use for the consistent hash key. The sender knows the key to use.
    These ways to define the consistent hash key can be use together and at the same time for one router. The hashMapping is tried first.
    
    Parameters:
    
    virtualNodesFactor - number of virtual nodes per node, used in ConsistentHash
    
    hashMapping - partial function from message to the data to use for the consistent hash key
    
    system - the actor system hosting this router
  - $lessinit$greater$default$3
```
public static scala.PartialFunction<java.lang.Object,java.lang.Object> $lessinit$greater$default$3()
```
  - defaultAddress
```
public static Address defaultAddress(ActorSystem system)
```
  - apply
```
public static ConsistentHashingRoutingLogic apply(ActorSystem system,
                                                  int virtualNodesFactor,
                                                  scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping)
```
    Uses consistent hashing to select a routee based on the sent message.
    There is 3 ways to define what data to use for the consistent hash key.
    1. You can define hashMapping / withHashMapper of the router to map incoming messages to their consistent hash key. This makes the decision transparent for the sender.
    2. The messages may implement ConsistentHashingRouter.ConsistentHashable. The key is part of the message and it's convenient to define it together with the message definition.
    3. The messages can be wrapped in a ConsistentHashingRouter.ConsistentHashableEnvelope to define what data to use for the consistent hash key. The sender knows the key to use.
    These ways to define the consistent hash key can be use together and at the same time for one router. The hashMapping is tried first.
    
    Parameters:
    
    virtualNodesFactor - number of virtual nodes per node, used in ConsistentHash
    
    hashMapping - partial function from message to the data to use for the consistent hash key
    
    system - the actor system hosting this router
  - apply$default$2
```
public static int apply$default$2()
```
  - apply$default$3
```
public static scala.PartialFunction<java.lang.Object,java.lang.Object> apply$default$3()
```
  - unapply
```
public static scala.Option<scala.Tuple3<ActorSystem,java.lang.Object,scala.PartialFunction<java.lang.Object,java.lang.Object>>> unapply(ConsistentHashingRoutingLogic x$0)
```
  - system
```
public ActorSystem system()
```
  - virtualNodesFactor
```
public int virtualNodesFactor()
```
  - hashMapping
```
public scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping()
```
  - vnodes
```
public int vnodes()
```
  - withVirtualNodesFactor
```
public ConsistentHashingRoutingLogic withVirtualNodesFactor(int vnodes)
```
    Setting the number of virtual nodes per node, used in ConsistentHash
  - withHashMapper
```
public ConsistentHashingRoutingLogic withHashMapper(ConsistentHashingRouter.ConsistentHashMapper mapper)
```
    Java API: Setting the mapping from message to the data to use for the consistent hash key.
  - select
```
public Routee select(java.lang.Object message,
                     scala.collection.immutable.IndexedSeq<Routee> routees)
```
    Description copied from interface: RoutingLogic
    
    Pick the destination for a given message. Normally it picks one of the passed routees, but in the end it is up to the implementation to return whatever Routee to use for sending a specific message.
    When implemented from Java it can be good to know that routees.apply(index) can be used to get an element from the IndexedSeq.
    
    Specified by:
    
    select in interface RoutingLogic
  - copy
```
public ConsistentHashingRoutingLogic copy(ActorSystem system,
                                          int virtualNodesFactor,
                                          scala.PartialFunction<java.lang.Object,java.lang.Object> hashMapping)
```
  - copy$default$1
```
public ActorSystem copy$default$1()
```
  - copy$default$2
```
public int copy$default$2()
```
  - copy$default$3
```
public scala.PartialFunction<java.lang.Object,java.lang.Object> copy$default$3()
```
  - productPrefix
```
public java.lang.String productPrefix()
```
    Specified by:
    
    productPrefix in interface scala.Product
  - productArity
```
public int productArity()
```
    Specified by:
    
    productArity in interface scala.Product
  - productElement
```
public java.lang.Object productElement(int x$1)
```
    Specified by:
    
    productElement in interface scala.Product
  - productIterator
```
public scala.collection.Iterator<java.lang.Object> productIterator()
```
    Specified by:
    
    productIterator in interface scala.Product
  - canEqual
```
public boolean canEqual(java.lang.Object x$1)
```
    Specified by:
    
    canEqual in interface scala.Equals
  - productElementName
```
public java.lang.String productElementName(int x$1)
```
    Specified by:
    
    productElementName in interface scala.Product
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object x$1)
```
    Specified by:
    
    equals in interface scala.Equals
    
    Overrides:
    
    equals in class java.lang.Object

Class ConsistentHashingRoutingLogic

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface scala.Product

Constructor Detail

ConsistentHashingRoutingLogic

ConsistentHashingRoutingLogic

Method Detail

$lessinit$greater$default$2

$lessinit$greater$default$3

defaultAddress

apply

apply$default$2

apply$default$3

unapply

system

virtualNodesFactor

hashMapping

vnodes

withVirtualNodesFactor

withHashMapper

select

copy

copy$default$1

copy$default$2

copy$default$3

productPrefix

productArity

productElement

productIterator

canEqual

productElementName

hashCode

toString

equals