com.trivago.triava.tcache.statistics

Class NullStatisticsCalculator

java.lang.Object

com.trivago.triava.tcache.statistics.NullStatisticsCalculator

All Implemented Interfaces:

StatisticsCalculator, Serializable

public class NullStatisticsCalculator
extends Object
implements StatisticsCalculator, Serializable

Implementation for StatisticsCalculator, that does not count and all getters return zero values. Target usage of this class is to benchmark the overhead of StandardStatisticsCalculator and for measuring the maximum throughput of tCache.

Author:

cesken

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NullStatisticsCalculator()

Method Summary

Modifier and Type	Method and Description
void	clear()
long	getDropCount()
long	getHitCount()
long	getMissCount()
long	getPutCount()
long	getRemoveCount()
void	incrementDropCount()
void	incrementHitCount()
void	incrementMissCount()
void	incrementPutCount()
void	incrementRemoveCount()
void	incrementRemoveCount(int removedCount)
HitAndMissDifference	tick() Ends the current measurement interval, and returns the hits and misses since the last measurement.This method is called only once per measurement interval, which is 1 minute.

Methods inherited from class java.lang.Object

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

Constructor Detail

NullStatisticsCalculator

public NullStatisticsCalculator()

Method Detail

incrementHitCount

public void incrementHitCount()

Specified by:

incrementHitCount in interface StatisticsCalculator

incrementMissCount

public void incrementMissCount()

Specified by:

incrementMissCount in interface StatisticsCalculator

incrementPutCount

public void incrementPutCount()

Specified by:

incrementPutCount in interface StatisticsCalculator

incrementDropCount

public void incrementDropCount()

Specified by:

incrementDropCount in interface StatisticsCalculator

incrementRemoveCount

public void incrementRemoveCount()

Specified by:

incrementRemoveCount in interface StatisticsCalculator

incrementRemoveCount

public void incrementRemoveCount(int removedCount)

Specified by:

incrementRemoveCount in interface StatisticsCalculator

tick

public HitAndMissDifference tick()

Description copied from interface: StatisticsCalculator

Ends the current measurement interval, and returns the hits and misses since the last measurement.This method is called only once per measurement interval, which is 1 minute. See Cache.CACHE_HITRATE_MAX_VALIDITY_MILLIS

Specified by:

tick in interface StatisticsCalculator

Returns:

The absolute count of hits and misses since the last measurement

getHitCount

public long getHitCount()

Specified by:

getHitCount in interface StatisticsCalculator

getMissCount

public long getMissCount()

Specified by:

getMissCount in interface StatisticsCalculator

getPutCount

public long getPutCount()

Specified by:

getPutCount in interface StatisticsCalculator

getDropCount

public long getDropCount()

Specified by:

getDropCount in interface StatisticsCalculator

getRemoveCount

public long getRemoveCount()

Specified by:

getRemoveCount in interface StatisticsCalculator

clear

public void clear()

Specified by:

clear in interface StatisticsCalculator