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class="article-meta-label">发表于</span><time datetime="2025-03-02T10:55:49.000Z" title="发表于 2025-03-02 18:55:49">2025-03-02</time></span></div><div class="content">概念单例模式（Singleton...</div></div></div><div class="recent-post-item"><div class="recent-post-info no-cover"><a class="article-title" href="/2025/02/26/map%E5%AD%A6%E4%B9%A0/" title="map学习">map学习</a><div class="article-meta-wrap"><span class="post-meta-date"><i class="far fa-calendar-alt"></i><span class="article-meta-label">发表于</span><time datetime="2025-02-26T09:52:58.000Z" title="发表于 2025-02-26 17:52:58">2025-02-26</time></span></div><div class="content">基本概念与用法什么是map在Go语言中，map是一种内置的数据结构，用于存储键值对。Go语言中的map有以下几个特性 基于key / value 存储的映射模式 读、写、删操作时间复杂度O(1) 内部是无序的 key 类型要求map 中，key 的数据类型必须为可比较的类型 初始化// 方式一： 使用var关键字声明Map，然后使用make函数初始化var myMap map[string]intmyMap = make(map[string]int)// 方式二：使用make关键字进行初始化，同时指定 map 预分配的容量myMap := make(map[stirng]int, 2)// 方式三： 使用make函数直接声明并初始化MapmyMap := make(map[string]int)// 方式四： 使用Map字面量初始化Map，这在创建预填充的Map时非常有用myMap := map[string]int{ "apple": 5, "banana": 10,} 增删改查//...</div></div></div><div class="recent-post-item"><div class="recent-post-info no-cover"><a class="article-title" href="/2025/02/23/bitcask%E5%AD%98%E5%82%A8%E5%BC%95%E6%93%8E/" title="bitcask存储引擎">bitcask存储引擎</a><div class="article-meta-wrap"><span class="post-meta-date"><i class="far fa-calendar-alt"></i><span class="article-meta-label">发表于</span><time datetime="2025-02-23T15:53:29.000Z" title="发表于 2025-02-23 23:53:29">2025-02-23</time></span></div><div class="content">简介论文地址：bitcask bitcask 最初是由一个做分布式存储系统的商业化公司 riak 提出来的。 最初希望寻找一个满足以下条件的存储引擎： 读写低延迟 高吞吐，特别是对大量的随机写入 能够处理超过内存容量的数据 崩溃恢复友好，能够保证快速恢复，尽量不丢数据 简单的备份和恢复策略 相对简单、易懂的代码结构和数据存储格式 在大数据量下，性能有保障 能够有自由的授权使用在 Riak 的系统中 虽然部分目标很容易实现，但要全部满足这些要求并不简单。 作者在文中提到： hash table log merging: that doing so could potentially be made as fast or faster than LSM-trees. 哈希表的日志合并可以比 LSM-Tree 更快。 这也是bitcask模型的核心思想 架构设计bitcask实例 Bitcask 实例本质上是一个目录，并且同一时间只能有一个进程打开该 Bitcask 目录进行写入。在目录下放着若干个数据文件，这些文件被分为两类：active data file 和 older...</div></div></div><div class="recent-post-item"><div class="recent-post-info no-cover"><a class="article-title" href="/2025/02/13/%E8%B4%9F%E8%BD%BD%E5%9D%87%E8%A1%A1%E5%AD%A6%E4%B9%A0/" title="负载均衡学习">负载均衡学习</a><div class="article-meta-wrap"><span class="post-meta-date"><i class="far fa-calendar-alt"></i><span class="article-meta-label">发表于</span><time datetime="2025-02-13T11:08:39.000Z" title="发表于 2025-02-13 19:08:39">2025-02-13</time></span></div><div class="content">1. 什么是负载均衡 负载均衡（Load Balancing）是一种将网络流量、请求或工作负载分配到多个服务器或计算资源上的技术。其目的是提高系统的性能、可靠性和可扩展性 在一个高流量或高负载的网络环境中，单个服务器可能无法处理所有的请求或工作负载。负载均衡通过将流量分发到多个服务器上，使得每个服务器都能够平均分担负载，从而提高整个系统的处理能力 2. 负载均衡的实现方式 基于网络层的负载均衡：通过在网络层（如路由器、交换机）上进行流量分发，将请求分发到不同的服务器上。常见的协议有基于IP的负载均衡（如Round Robin、Least Connections）和基于DNS的负载均衡（如DNS轮询、DNS解析返回多个IP地址） 基于应用层的负载均衡：通过在应用层（如负载均衡设备、反向代理服务器）上进行流量分发，根据请求的内容、协议或其他特征将请求分发到不同的服务器上。常见的协议有HTTP、HTTPS、SMTP等 3....</div></div></div><div class="recent-post-item"><div class="recent-post-info no-cover"><a class="article-title" href="/2025/02/13/git%E5%AD%A6%E4%B9%A0%E8%AE%B0%E5%BD%95/" title="git学习记录">git学习记录</a><div class="article-meta-wrap"><span class="post-meta-date"><i class="far fa-calendar-alt"></i><span class="article-meta-label">发表于</span><time datetime="2025-02-13T10:59:11.000Z" title="发表于 2025-02-13 18:59:11">2025-02-13</time></span></div><div class="content">git学习记录最近写项目的时候，总是会遇到一些git问题，大部分时候都是用gpt糊弄过去。 在这里决定系统的学习一下git。 git练习网站：Learn Git Branching git commitGit 仓库中的提交记录保存的是你的目录下所有文件的快照，就像是把整个目录复制，然后再粘贴一样。 题目： 提交一条记录 // 提交git commit git branchGit 的分支也非常轻量。它们只是简单地指向某个提交纪录 题目： 创建一个名为 bugFix 的新分支，然后切换过去。 git branch bugfixgit checkout bugfix // 也可以直接 git checkout -b bugfix 注意：在 Git 2.23 版本中，引入了一个名为 git switch 的新命令，最终会取代 git checkout，因为 checkout 作为单个命令有点超载（它承载了很多独立的功能）。 git mergeGit merge 用于合并两个分支，会产生一个特殊节点，包含两个父节点。 题目： 创建新分支 bugFix 用 git...</div></div></div></div><nav id="pagination"><div class="pagination"><span 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