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com.tangosol.net.cache
Interface ConfigurableCacheMap.EvictionPolicy

All Known Subinterfaces:

OldCache.EvictionPolicy

All Known Implementing Classes:

AbstractEvictionPolicy, OldCache.InternalEvictionPolicy, SerializationCache.InternalEvictionPolicy

Enclosing interface:

ConfigurableCacheMap

public static interface ConfigurableCacheMap.EvictionPolicy

An eviction policy is an object that the cache provides with access information, and when requested, the eviction policy selects and evicts entries from the cache. If the eviction policy needs to be aware of changes to the cache, it must implement the MapListener interface; if it does, it will automatically be registered to receive MapEvents.

See Also:

AbstractEvictionPolicy

Method Summary

void	entryTouched(ConfigurableCacheMap.Entry entry) This method is called by the cache to indicate that an entry has been touched.
String	getName() Obtain the name of the eviction policy.
void	requestEviction(int cMaximum) This method is called by the cache when the cache requires the eviction policy to evict entries.

Method Detail

entryTouched

void entryTouched(ConfigurableCacheMap.Entry entry)

This method is called by the cache to indicate that an entry has been touched.

Parameters:

entry - the Cache Entry that has been touched

requestEviction

void requestEviction(int cMaximum)

This method is called by the cache when the cache requires the eviction policy to evict entries.

Parameters:

cMaximum - the maximum number of units that should remain in the cache when the eviction is complete

getName

String getName()

Obtain the name of the eviction policy. This is intended to be human readable for use in a monitoring tool; examples include "LRU" and "LFU".

Returns:

the name of the eviction policy

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