Web Reference: (2)每个Redis请求,LRU的双向链表也需要进行同步操作,这种实现方式对性能影响不小。 而Redis本身实现的“近似LRU”算法,则远远不需要付出这么大的内存和性能代价,但也牺牲了一些内存淘汰的准确率。 LRU究竟是最近最久未使用算法,还是最近最少使用,发现网上两种说发都有? 首先想确定LRU到底是什么意思,《操作系统》教材上也很奇怪,标题是两种翻译,下面正文只写了一种(最近最久未使用)。 当LRU被翻译成最近最少使用的时候,… 显示全部 关注者 31 Nov 28, 2017 · 谢邀。 一般用树形结构的伪LRU来近似LRU实现Cache或TLB条目的淘汰算法。 (我当年还在我们单位的CPU模拟器上把TLB的Round-Robin淘汰算法替换成了PLRU对比测试了Spec2006某课题的TLB缺失率,发现没有什么改善,,,)
YouTube Excerpt: Chinese version is here: https://youtu.be/zjUTnix7jas The 146 question on LeetCode: https://leetcode.com/problems/lru-cache/ Fast Timeline 00:00 LeetCode 146 00:15 Related Cache Knowledge 02:30 Problem 03:16 Algorithm 07:14 Solution 11:13 Verify Solution on LeetCode 11:53 Review Key points !NOTE: At 9:29 , when we initialize the connection of dummy head/tail, it should be head.next = tail tail.pre = head There's a typo in the vide saying tail.next = pre B站:诗萌Stacy https://space.bilibili.com/496114065
Chinese version is here: https://youtu.be/zjUTnix7jas The 146 question on LeetCode: https://leetcode.com/problems/lru-cache/ Fast Timeline 00:00...
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