Package com.xxl.tool.cache.impl

Class UnlimitedCache<K,V>

java.lang.Object

com.xxl.tool.cache.impl.ReentrantCache<K,V>

com.xxl.tool.cache.impl.UnlimitedCache<K,V>

Type Parameters:

K -

V -

All Implemented Interfaces:

Cache<K,V>, Serializable

public class UnlimitedCache<K,V>
extends ReentrantCache<K,V>

无限容量缓存 1、无容量限制，不会因为容量触发缓存清理 2、线程安全，父类存在读写锁控制； 3、优劣势： - 优点：无容量限制，不会因为容量触发缓存清理； - 问题：内存占用不可用，容易造成内存溢出；需要结合 定义缓存清理策略 一起使用；

See Also:

• Serialized Form

Field Summary

Fields inherited from class com.xxl.tool.cache.impl.ReentrantCache

cacheMap, capacity, expireType, hitCount, listener, loader, missCount, timeout, writeLockCount, writeLockMap

Constructor Summary

Constructors

Constructor	Description
UnlimitedCache(long timeout, boolean expireType)

Method Summary

Modifier and Type	Method	Description
protected int	doPrune()	清理实现 子类实现此方法时无需加锁

Methods inherited from class com.xxl.tool.cache.impl.ReentrantCache

asMap, capacity, clear, containsKey, get, get, getIfPresent, hitCount, isEmpty, isFull, missCount, onRemove, prune, put, remove, removeWithoutLock, setListener, setLoader, size, timeout, toString

Methods inherited from class java.lang.Object

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

Constructor Details

UnlimitedCache

public UnlimitedCache(long timeout,
 boolean expireType)

Method Details

doPrune

protected int doPrune()

Description copied from class: ReentrantCache

清理实现
子类实现此方法时无需加锁

Specified by:

doPrune in class ReentrantCache<K,V>

Returns:

清理数据量