com.weibo.api.motan.cluster.loadbalance

Class ActiveWeightLoadBalance<T>

java.lang.Object

com.weibo.api.motan.cluster.loadbalance.AbstractLoadBalance<T>

com.weibo.api.motan.cluster.loadbalance.ActiveWeightLoadBalance<T>

All Implemented Interfaces:

LoadBalance<T>

Direct Known Subclasses:

ConfigurableWeightLoadBalance

@SpiMeta(name="activeWeight")
public class ActiveWeightLoadBalance<T>
extends AbstractLoadBalance<T>

"低并发优化" 负载均衡

                1） 低并发度优先： referer的某时刻的call数越小优先级越高 
 
                2） 低并发referer获取策略：
                                由于Referer List可能很多，比如上百台，如果每次都要从这上百个Referer或者最低并发的几个，性能有些损耗，
                                因此 random.nextInt(list.size()) 获取一个起始的index，然后获取最多不超过MAX_REFERER_COUNT的
                                状态是isAvailable的referer进行判断activeCount.
 

Version:

创建时间：2013-6-14

Author:

maijunsheng

Field Summary

Fields inherited from class com.weibo.api.motan.cluster.loadbalance.AbstractLoadBalance

MAX_REFERER_COUNT

Constructor Summary

Constructors

Constructor and Description
ActiveWeightLoadBalance()

Method Summary

Modifier and Type	Method and Description
protected Referer<T>	doSelect(Request request)
protected void	doSelectToHolder(Request request, List<Referer<T>> refersHolder)

Methods inherited from class com.weibo.api.motan.cluster.loadbalance.AbstractLoadBalance

getReferers, onRefresh, select, selectToHolder, setWeightString

Methods inherited from class java.lang.Object

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

Constructor Detail

ActiveWeightLoadBalance

public ActiveWeightLoadBalance()

Method Detail

doSelect

protected Referer<T> doSelect(Request request)

Specified by:

doSelect in class AbstractLoadBalance<T>

doSelectToHolder

protected void doSelectToHolder(Request request,
                                List<Referer<T>> refersHolder)

Specified by:

doSelectToHolder in class AbstractLoadBalance<T>