LRU 通常使用hash map + doubly linked list实现。在Golange中很简单,使用List保存数据,Map来做快速访问即可. 具体实现了下面几个函数: func NewLRUCache(cap int)(*LRUCache) func (lru *LRUCache)Set(k,v interface{})(error) func (lru *LRUCache)Get(k interface{})(v interface{},ret bool,err e...
前言早在几年前写过关于 LRU cache 的文章: https://crossoverjie.top/2018/04/07/algorithm/LRU-cache/当时是用 Java 实现的,最近我在完善 ptg 时正好需要一个最近最少使用的数据结构来存储历史记录。 ptg: Per…
LFU全称是最不经常使用算法(Least Frequently Used),LFU算法的基本思想和所有的缓存算法一样,一定时期内被访问次数最少的页,在将来被访问到的几率也是最小的。 相比于LRU(Least Recently Use)算法,LFU更加注重于使用的频率。**LRU是其实可以看作是频率为1的LFU的。** LFU流程1 和LRU不同的是,LFU是根据频率排序...
type Cache struct{bykey map[string]*CacheItem// Hashmap containing *CacheItems for O(1) accessfreqs*list.List// Linked list of frequenciescapacity int// Max number of itemssize int// Current size of cache} Cache将包含hash键,称为bykey(命名来自上面链接的文件),频率列表称为freqs,缓存的最大...
Nearly LRU algorithm Strictly limited memory usage Come with a toy server that supports a few basic Redis commands with pipeline Iterator support FreeCache数据结构 如果没有看到数据结构的设计,只看代码会非常的吃力。整个FreeCache的数据结构只有256个Segement,里面包括存储键值对索引的slotData,每个索引指针名称...
时钟置换算法(Clock Replacement Algorithm):也称为"二次机会"(Second-Chance)页面置换算法,是一种用于虚拟内存管理的页面置换策略。它是基于近似最近未使用(LRU)算法的一种改进,旨在降低实现复杂度,同时在某种程度上模拟LRU的效果。 页面缓冲思想 页面缓冲思想(Page Buffering)是指在计算机系统中,通过缓存(缓冲)页面数...
cache Functions: NewLRU: NewLRU represent initiate lru cache with capacity NewLFU: NewLFU represent initiate lfu cache with capacity Get: Get the value by key from LFU cache Put: Put the key and value in LFU cache Types LRU: Default the struct of lru cache algorithm. LFU: Default the ...
WithMaxMemoryUsageSets the max memory usage of the cache.gocache.NoMaxMemoryUsagemeans there is no limit. The default behavior is to not evict based on memory usage. WithEvictionPolicySets the eviction algorithm to be used when the cache reaches the max size. If not set, the default eviction...
Algorithm LeetCode Problems 一. 目录 二.分类 Array String Two Pointers Linked List Stack Tree Dynamic Programming Backtracking Depth First Search Breadth First Search Binary Search Math Hash Table Sort Bit Manipulation Union Find Sliding Window Segment Tree Binary Indexed Tree ♥️ Thanks LeetCode ...
go-astar - Go implementation of the A* path finding algorithm. go-sdl2 - Go bindings for the Simple DirectMedia Layer. go3d - Performance oriented 2D/3D math package for Go. gonet - Game server skeleton implemented with golang. goworld - Scalable game server engine, featuring space-entity...