org.apache.cassandra.cache
Class InstrumentingCache<K,V>

java.lang.Object
  org.apache.cassandra.cache.InstrumentingCache<K,V>

Direct Known Subclasses:

AutoSavingCache

public class InstrumentingCache<K,V>
extends java.lang.Object

Wraps an ICache in requests + hits tracking.

Constructor Summary

InstrumentingCache(ICache<K,V> map)

Method Summary

void	clear()
boolean	containsKey(K key)
V	get(K key)
long	getCapacity()
long	getHits()
V	getInternal(K key)
java.util.Set<K>	getKeySet()
double	getRecentHitRate()
long	getRequests()
java.util.Set<K>	hotKeySet(int n)
boolean	isCapacitySetManually()
boolean	isPutCopying()
void	put(K key, V value)
boolean	putIfAbsent(K key, V value)
void	remove(K key)
boolean	replace(K key, V old, V value)
void	setCapacity(long capacity)
int	size()
void	updateCapacity(long capacity)
long	weightedSize()

Methods inherited from class java.lang.Object

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

Constructor Detail

InstrumentingCache

public InstrumentingCache(ICache<K,V> map)

Method Detail

put

public void put(K key,
                V value)

putIfAbsent

public boolean putIfAbsent(K key,
                           V value)

replace

public boolean replace(K key,
                       V old,
                       V value)

get

public V get(K key)

getInternal

public V getInternal(K key)

remove

public void remove(K key)

getCapacity

public long getCapacity()

isCapacitySetManually

public boolean isCapacitySetManually()

updateCapacity

public void updateCapacity(long capacity)

setCapacity

public void setCapacity(long capacity)

size

public int size()

weightedSize

public long weightedSize()

getHits

public long getHits()

getRequests

public long getRequests()

getRecentHitRate

public double getRecentHitRate()

clear

public void clear()

getKeySet

public java.util.Set<K> getKeySet()

hotKeySet

public java.util.Set<K> hotKeySet(int n)

containsKey

public boolean containsKey(K key)

isPutCopying

public boolean isPutCopying()