GigaSpaces XAP 9.5 API

com.j_spaces.javax.cache
Interface EvictionStrategy


Deprecated.

@Deprecated
public interface EvictionStrategy

EvictionStrategy decides which entry to evict when the cache reaches its limits. The eviction strategy acts as a CacheEntry factory, this way if the cache has a new element inserted then the eviction strategy would be informed of such an operation and can keep track of the state of the cache. In order to keep track of the entries use the cache informs the eviction strategy on each use ("touch") of a CacheEntry.

Since:
5.0
Version:
1.0
Author:
Guy Korland

Method Summary
 void clear()
          Deprecated. Clear EvictionStrategy internal structures only and doesn't clear cache.
 CacheEntry createEntry(Object key, Object value, long ttl, int version)
          Deprecated. Creates new CacheEntry for the Cache and probably saves the entry in the internal structures.
 void discardEntry(CacheEntry entry)
          Deprecated. Discard an Entry from the EvictionStrategy internal structures.
 int evict(Cache cache)
          Deprecated. Evicts batch of CacheEntry from the Cache according to the eviction strategy.
 void touchEntry(CacheEntry entry)
          Deprecated. Informs the eviction strategy on a CacheEntry use.
 

Method Detail

clear

void clear()
Deprecated. 
Clear EvictionStrategy internal structures only and doesn't clear cache.


createEntry

CacheEntry createEntry(Object key,
                       Object value,
                       long ttl,
                       int version)
Deprecated. 
Creates new CacheEntry for the Cache and probably saves the entry in the internal structures.

Parameters:
key - the entry key
value - the entry value
ttl - the time to keep the entry in cache
version - the entry version
Returns:
a CacheEntry that holds all the parameters and probably saved in the eviction strategy internal structures

discardEntry

void discardEntry(CacheEntry entry)
Deprecated. 
Discard an Entry from the EvictionStrategy internal structures.

Parameters:
entry - the entry to discard from the eviction strategy internal structures

evict

int evict(Cache cache)
Deprecated. 
Evicts batch of CacheEntry from the Cache according to the eviction strategy.

Parameters:
cache - the cache to be evicted
Returns:
the amount of entries evicted

touchEntry

void touchEntry(CacheEntry entry)
Deprecated. 
Informs the eviction strategy on a CacheEntry use.

Parameters:
entry - the touched entry

GigaSpaces XAP 9.5 API

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