Package org.ametys.plugins.core.impl.cache

Class GuavaCacheStats

java.lang.Object

org.ametys.plugins.core.impl.cache.GuavaCacheStats

All Implemented Interfaces:

CacheStats

public class GuavaCacheStats
extends Object
implements CacheStats

Guava implementation of CacheStats

Field Summary

Fields

Modifier and Type	Field	Description
private CacheStats	_cacheStats

Constructor Summary

Constructors

Constructor	Description
GuavaCacheStats()	GuavaCacheStats implementation of CacheStats
GuavaCacheStats(CacheStats cacheStats)	GuavaCacheStats implementation of CacheStats

Method Summary

Modifier and Type	Method	Description
long	evictionCount()	Returns the number of times an entry has been evicted.
double	evictionRate()	Returns the ratio of cache requests that lead to an eviction.
long	hitCount()	Returns the number of times cache lookup methods have returned a cached value.
double	hitRate()	Returns the ratio of cache requests which were hits.
CacheStats	minus(CacheStats cacheStats)	Returns a new CacheStats representing the difference between this CacheStats and other.
long	missCount()	Returns the number of times cache lookup methods have returned an uncached (newly loaded) value, or null.
double	missRate()	Returns the ratio of cache requests which were misses.
CacheStats	plus(CacheStats cacheStats)	Returns a new CacheStats representing the sum between this CacheStats and other
long	requestCount()	Returns the number of times cache lookup methods have returned either a cached or uncached value.

Methods inherited from class java.lang.Object

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

Field Detail

_cacheStats

private CacheStats _cacheStats

Constructor Detail

GuavaCacheStats

public GuavaCacheStats()

GuavaCacheStats implementation of CacheStats

GuavaCacheStats

public GuavaCacheStats(CacheStats cacheStats)

GuavaCacheStats implementation of CacheStats

Parameters:

cacheStats - stats of Guava cache

Method Detail

requestCount

public long requestCount()

Description copied from interface: CacheStats

Returns the number of times cache lookup methods have returned either a cached or uncached value. This is defined as hitCount + missCount.

Specified by:

requestCount in interface CacheStats

Returns:

the number of times cache lookup methods have returned either a cached or uncached value.

hitCount

public long hitCount()

Description copied from interface: CacheStats

Returns the number of times cache lookup methods have returned a cached value.

Specified by:

hitCount in interface CacheStats

Returns:

the number of times cache lookup methods have returned a cached value.

hitRate

public double hitRate()

Description copied from interface: CacheStats

Returns the ratio of cache requests which were hits. This is defined as hitCount/requestCount. If requestCount equals 0, return 1

Specified by:

hitRate in interface CacheStats

Returns:

the ratio of cache requests which were hits.

missCount

public long missCount()

Description copied from interface: CacheStats

Returns the number of times cache lookup methods have returned an uncached (newly loaded) value, or null.

Specified by:

missCount in interface CacheStats

Returns:

missCount

missRate

public double missRate()

Description copied from interface: CacheStats

Returns the ratio of cache requests which were misses. This is defined as missCount/requestCount. If requestCount equals 0, return 0

Specified by:

missRate in interface CacheStats

Returns:

the ratio of cache requests which were misses.

evictionCount

public long evictionCount()

Description copied from interface: CacheStats

Returns the number of times an entry has been evicted. This count does not include manual invalidations.

Specified by:

evictionCount in interface CacheStats

Returns:

the number of times an entry has been evicted.

evictionRate

public double evictionRate()

Description copied from interface: CacheStats

Returns the ratio of cache requests that lead to an eviction. This is defined as evictionCount/requestCount. If requestCount equals 0, return 0

Specified by:

evictionRate in interface CacheStats

Returns:

the ratio of cache requests that lead to an eviction.

minus

public CacheStats minus(CacheStats cacheStats)

Description copied from interface: CacheStats

Returns a new CacheStats representing the difference between this CacheStats and other.

Specified by:

minus in interface CacheStats

Parameters:

cacheStats - the other CacheStats

Returns:

the CacheStats representing the difference between this CacheStats and other.

plus

public CacheStats plus(CacheStats cacheStats)

Description copied from interface: CacheStats

Returns a new CacheStats representing the sum between this CacheStats and other

Specified by:

plus in interface CacheStats

Parameters:

cacheStats - the other CacheStats

Returns:

the new CacheStats representing the sum between this CacheStats and other.