com.alibaba.metrics

类 UniformReservoir

java.lang.Object

com.alibaba.metrics.UniformReservoir

所有已实现的接口:

Reservoir

public class UniformReservoir
extends Object
implements Reservoir

A random sampling reservoir of a stream of longs. Uses Vitter's Algorithm R to produce a statistically representative sample.

另请参阅:

Random Sampling with a Reservoir

构造器概要

构造器

构造器和说明
UniformReservoir() Creates a new UniformReservoir of 1028 elements, which offers a 99.9% confidence level with a 5% margin of error assuming a normal distribution.
UniformReservoir(int size) Creates a new UniformReservoir.

方法概要

限定符和类型	方法和说明
Snapshot	getSnapshot()
int	size()
void	update(long value)

从类继承的方法 java.lang.Object

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

构造器详细资料

UniformReservoir

public UniformReservoir()

Creates a new UniformReservoir of 1028 elements, which offers a 99.9% confidence level with a 5% margin of error assuming a normal distribution.

UniformReservoir

public UniformReservoir(int size)

Creates a new UniformReservoir.

参数:

size - the number of samples to keep in the sampling reservoir

方法详细资料

size

public int size()

指定者:

size 在接口中 Reservoir

update

public void update(long value)

指定者:

update 在接口中 Reservoir

getSnapshot

public Snapshot getSnapshot()

指定者:

getSnapshot 在接口中 Reservoir