com.graphdbapi.driver.internal.cluster.loadbalancing

Class LeastConnectedLoadBalancingStrategy

java.lang.Object

com.graphdbapi.driver.internal.cluster.loadbalancing.LeastConnectedLoadBalancingStrategy

All Implemented Interfaces:

LoadBalancingStrategy

public class LeastConnectedLoadBalancingStrategy
extends Object
implements LoadBalancingStrategy

负载均衡策略，用于查找来自路由表中的的最少活动连接（从池中检出）的服务器地址。 以round-robin轮询调度方式找到迭代的起始索引。 这样做是为了防止在所有地址具有相同数量的活动连接时反复选择相同的第一地址。

Constructor Summary

Constructors

Constructor and Description
LeastConnectedLoadBalancingStrategy(com.graphdbapi.driver.internal.spi.ConnectionPool connectionPool, com.graphdbapi.driver.v1.Logging logging)

Method Summary

Modifier and Type	Method and Description
com.graphdbapi.driver.internal.BoltServerAddress	select(com.graphdbapi.driver.internal.BoltServerAddress[] knownServers, com.graphdbapi.driver.internal.cluster.StrategyParam params) 在给定的地址数组中选择最合适的地址。

Methods inherited from class java.lang.Object

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

Constructor Detail

LeastConnectedLoadBalancingStrategy

public LeastConnectedLoadBalancingStrategy(com.graphdbapi.driver.internal.spi.ConnectionPool connectionPool,
                                           com.graphdbapi.driver.v1.Logging logging)

Parameters:

connectionPool - 连接池

logging - Logger实例访问者

Method Detail

select

public com.graphdbapi.driver.internal.BoltServerAddress select(com.graphdbapi.driver.internal.BoltServerAddress[] knownServers,
                                                               com.graphdbapi.driver.internal.cluster.StrategyParam params)

Description copied from interface: LoadBalancingStrategy

在给定的地址数组中选择最合适的地址。

Specified by:

select in interface LoadBalancingStrategy

Parameters:

knownServers - 已知路由表中的地址数组

params - 自定义策略所需要的属性，例如执行语句中的方法名、图INDEX、执行的参数

Returns:

选择连接的地址