程序包 org.ssssssss.magicapi.modules.db.cache

类 LRUCache

java.lang.Object

java.util.AbstractMap<String,LRUCache.ExpireNode<Object>>

java.util.HashMap<String,LRUCache.ExpireNode<Object>>

java.util.LinkedHashMap<String,LRUCache.ExpireNode<Object>>

org.ssssssss.magicapi.modules.db.cache.LRUCache

所有已实现的接口:

Serializable, Cloneable, Map<String,LRUCache.ExpireNode<Object>>, SequencedMap<String,LRUCache.ExpireNode<Object>>

public class LRUCache
extends LinkedHashMap<String,LRUCache.ExpireNode<Object>>

LRU缓存实现

作者:

mxd

另请参阅:

• 序列化表格

嵌套类概要

嵌套类

修饰符和类型	类	说明
(专用程序包) static class	LRUCache.ExpireNode<V>	过期时间节点

从类继承的嵌套类/接口 java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

字段概要

字段

修饰符和类型	字段	说明
private final int	capacity
private final long	expire
private final ReentrantReadWriteLock	lock
private final String	separator

构造器概要

构造器

构造器	说明
LRUCache(int capacity, long expire)

方法概要

修饰符和类型	方法	说明
private void	clean()	清理已过期的数据
void	delete(String name)
Object	get(String name, String key)
void	put(String name, String key, Object value)
void	put(String name, String key, Object value, long ttl)
protected boolean	removeEldestEntry(Map.Entry<String,LRUCache.ExpireNode<Object>> eldest)

从类继承的方法 java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, newLinkedHashMap, putFirst, putLast, replaceAll, reversed, sequencedEntrySet, sequencedKeySet, sequencedValues, values

从类继承的方法 java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, newHashMap, put, putAll, putIfAbsent, remove, remove, replace, replace, size

从类继承的方法 java.util.AbstractMap

equals, hashCode, toString

从类继承的方法 java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

从接口继承的方法 java.util.SequencedMap

firstEntry, lastEntry, pollFirstEntry, pollLastEntry

字段详细资料

separator

private final String separator

另请参阅:

• 常量字段值

capacity

private final int capacity

expire

private final long expire

lock

private final ReentrantReadWriteLock lock

构造器详细资料

LRUCache

public LRUCache(int capacity,
 long expire)

方法详细资料

put

public void put(String name,
 String key,
 Object value)

put

public void put(String name,
 String key,
 Object value,
 long ttl)

get

public Object get(String name,
 String key)

delete

public void delete(String name)

removeEldestEntry

protected boolean removeEldestEntry(Map.Entry<String,LRUCache.ExpireNode<Object>> eldest)

覆盖:

removeEldestEntry 在类中 LinkedHashMap<String,LRUCache.ExpireNode<Object>>

clean

private void clean()

清理已过期的数据