如下所示,笔者使用LinkedHashMap实现一个符合LRU算法的数据结构,该结构最多可以缓存6个元素,但元素多余六个时,会自动删除最近最久没有被使用的元素,如下所示: publicclassLRU<K,V>extendsLinkedHashMap<K, V>implementsMap<K, V>{privatestaticfinal long serialVersionUID = 1L;publicLRU(int initialCapacity, fl...
目录 简单概念 源码 简单概念 上面一篇博客分析了Lrucache的实现原理,我们知道他是通过自己实现同步,然后利用LinkedHashMap来实现的Lru功能。这篇文章就分析一下LinkedHashMap,首先说说它的一些基本的概念(基于jdk1.8)。 1 首先它是一个关联数组,哈希表...java...
Access ordered LinkedHashMap provides a great starting point for creating aLRU Cachefunctionality by overriding theremoveEldestEntry()method to impose a policy for automatically removing stale when new mappings are added to the map. This lets you expire data using some criteria that you define. 6. ...
LRU page replacement policy (currently being upgraded to LIRS). Equivalent performance toConcurrentHashMapunder load. Can bound by the size of the values (e.g. Multimap cache). Can notify a listener when an entry is evicted. See thetutorialfor examples of using this library. ...
LRU page replacement policy (currently being upgraded to LIRS). Equivalent performance toConcurrentHashMapunder load. Can bound by the size of the values (e.g. Multimap cache). Can notify a listener when an entry is evicted. See thetutorialfor examples of using this library. ...