Lrucache(继承了LinkedHashMap):LRUCache的使用:原理: 所以接下来讲一下LinkedHashMap源码(采用双向链表的双向队列)是怎么实现一个删除最近最少使用数据的功能? get和put方法中都调用了recordAccess方法,通过这个方法记录下用户访问的Entry,并把它移到队列的尾部去分析完父类LinkedHashMap,接着分析LRUCache的源码 ...
LinkedHashMapin Java is used to store key-value pairs very similar toHashMapclass. Difference is that LinkedHashMap maintains the order of elements inserted into it while HashMap is unordered. In this Java collection tutorial, we will learn about LinkedHashMap class, it’s methods, usecases ...
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. ...