Module com.renomad.minum

Package com.renomad.minum.utils

Class LRUCache<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

com.renomad.minum.utils.LRUCache<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>, SequencedMap<K,V>

public final class LRUCache<K,V>
extends LinkedHashMap<K,V>

A simple Least-Recently Used Cache See LRU

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

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

Method Summary

Modifier and Type	Method	Description
static <K, V> Map<K,V>	getLruCache()	Builds a map that functions as a least-recently used cache.
static <K, V> Map<K,V>	getLruCache(int maxSize)	Creates an LRUCache, allowing you to specify the max size.
protected boolean	removeEldestEntry(Map.Entry<K,V> eldest)

Methods inherited from class java.util.LinkedHashMap

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

Methods inherited from class java.util.HashMap

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

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

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

Methods inherited from interface java.util.SequencedMap

firstEntry, lastEntry, pollFirstEntry, pollLastEntry

Method Details

removeEldestEntry

protected boolean removeEldestEntry(Map.Entry<K,V> eldest)

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>

getLruCache

public static <K,
V> Map<K,V> getLruCache()

Builds a map that functions as a least-recently used cache. Sets the max size to DEFAULT_MAX_ENTRIES. If you want to specify the max size, use the constructor at getLruCache(int)
Make sure, when using this, to assign it to a fully-defined type, e.g. Map<String, String> foo = getLruCache() This is necessary since we provide this as a generic method, and the assignment is what enables Java to determine what types to build.

getLruCache

public static <K,
V> Map<K,V> getLruCache(int maxSize)

Creates an LRUCache, allowing you to specify the max size. Alternately, see getLruCache().
Make sure, when using this, to assign it to a fully-defined type, e.g. Map<String, String> foo = getLruCache(2) This is necessary since we provide this as a generic method, and the assignment is what enables Java to determine what types to build.