org.norther.tammi.core.monitor
Interface CacheMonitor

All Superinterfaces:

CacheClient, Executable, Refreshable, Runnable, Startable

All Known Implementing Classes:

DefaultCacheMonitor

public interface CacheMonitor
extends Executable, CacheClient

An interface that extends CacheClient to control and monitor other registered cache clients.

Author:

Marketta Priha

Method Summary

void	gc() Runs the garbage collector.
float	getExpirationFraction() Gets the fraction of cached entries to expire when running low in memory.
long	getExpirationThreshold() Gets the threshold of available memory below which caches are expired.
long	getFreeMemory() Gets the amount of free memory in bytes.
long	getMaxMemory() Gets max amount of memory in bytes.
long	getTotalMemory() Gets total amount of memory in bytes.
String	logMemoryStatus() Logs memory status using the info logger.
void	setExpirationFraction(float frac) Sets the fraction of cached entries to expire when running low in memory.
void	setExpirationThreshold(long thresh) Sets the threshold of available memory below which caches are expired.

Methods inherited from interface org.norther.tammi.core.thread.Executable

getExecutorName, setExecutorName

Methods inherited from interface org.norther.tammi.core.base.Startable

isStarted, start, stop

Methods inherited from interface java.lang.Runnable

run

Methods inherited from interface org.norther.tammi.core.cache.CacheClient

clearCached, expireCached, expireFraction, getCache, isCachingDisabled, removeCache, setCachingDisabled

Methods inherited from interface org.norther.tammi.core.base.Refreshable

getRefreshed, refresh

Method Detail

getMaxMemory

long getMaxMemory()

Gets max amount of memory in bytes.

Returns:

the max amount of memory in bytes.

getTotalMemory

long getTotalMemory()

Gets total amount of memory in bytes.

Returns:

the total amount of memory in bytes.

getFreeMemory

long getFreeMemory()

Gets the amount of free memory in bytes.

Returns:

the amount of free memory in bytes.

getExpirationThreshold

long getExpirationThreshold()

Gets the threshold of available memory below which caches are expired.

Returns:

the cache expiration threshold in bytes.

setExpirationThreshold

void setExpirationThreshold(long thresh)

Sets the threshold of available memory below which caches are expired.

Parameters:

thresh - the cache expiration threshold in bytes.

getExpirationFraction

float getExpirationFraction()

Gets the fraction of cached entries to expire when running low in memory.

Returns:

the cache expiration fraction (0.0..1.0).

setExpirationFraction

void setExpirationFraction(float frac)

Sets the fraction of cached entries to expire when running low in memory.

Parameters:

frac - the cache expiration fraction (0.0..1.0).

logMemoryStatus

String logMemoryStatus()

Logs memory status using the info logger.

Returns:

the memory status.

gc

void gc()

Runs the garbage collector.