程序包 org.apache.dubbo.common.utils

类 LFUCache<K,V>

java.lang.Object

org.apache.dubbo.common.utils.LFUCache<K,V>

public class LFUCache<K,V>
extends Object

构造器概要

构造器

构造器	说明
LFUCache()
LFUCache(int maxCapacity, float evictionFactor)	Constructs and initializes cache with specified capacity and eviction factor.
LFUCache(int maxCapacity, float evictionFactor, long removeFreqEntryTimeout)	Constructs and initializes cache with specified capacity and eviction factor.

方法概要

修饰符和类型	方法	说明
V	get(K key)
int	getCapacity()
Long	getFreq(K key)	Returns freq of the element
int	getFreqListSize(Long freq)	Returns node list's size of this frequency
int	getFreqTableSize()	Returns size of the freq table
int	getSize()	Returns cache current size.
V	put(K key, V value)
V	remove(K key)

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

LFUCache

public LFUCache()

LFUCache

public LFUCache(int maxCapacity,
                float evictionFactor)

Constructs and initializes cache with specified capacity and eviction factor. Unacceptable parameter values followed with IllegalArgumentException.

参数:

maxCapacity - cache max capacity

evictionFactor - cache proceedEviction factor

LFUCache

public LFUCache(int maxCapacity,
                float evictionFactor,
                long removeFreqEntryTimeout)

Constructs and initializes cache with specified capacity and eviction factor. Unacceptable parameter values followed with IllegalArgumentException.

参数:

maxCapacity - cache max capacity

evictionFactor - cache proceedEviction factor

removeFreqEntryTimeout - cache queue remove timeout

方法详细资料

getCapacity

public int getCapacity()

put

public V put(K key,
             V value)

remove

public V remove(K key)

get

public V get(K key)

getFreqTableSize

public int getFreqTableSize()

Returns size of the freq table

返回:

size

getFreq

public Long getFreq(K key)

Returns freq of the element

返回:

freq

getFreqListSize

public int getFreqListSize(Long freq)

Returns node list's size of this frequency

返回:

node list's size

getSize

public int getSize()

Returns cache current size.

返回:

cache size