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<!DOCTYPE html>
<html lang="zh-CN" data-default-color-scheme=auto>
<head>
<meta charset="UTF-8">
<link rel="apple-touch-icon" sizes="76x76" href="/img/fluid.png">
<link rel="icon" href="/img/fluid.png">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0, shrink-to-fit=no">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="theme-color" content="#2f4154">
<meta name="author" content="ZhuoRan-Takuzen">
<meta name="keywords" content="">
<meta name="description" content="A personal Blog about Web, KG, ML, and Life.">
<meta property="og:type" content="website">
<meta property="og:title" content="Takuzen's Blog">
<meta property="og:url" content="https://username.github.io/index.html">
<meta property="og:site_name" content="Takuzen's Blog">
<meta property="og:description" content="A personal Blog about Web, KG, ML, and Life.">
<meta property="og:locale" content="zh_CN">
<meta property="article:author" content="ZhuoRan-Takuzen">
<meta name="twitter:card" content="summary_large_image">
<title>Takuzen's Blog</title>
<link rel="stylesheet" href="https://lib.baomitu.com/twitter-bootstrap/4.6.1/css/bootstrap.min.css" />
<!-- 主题依赖的图标库，不要自行修改 -->
<!-- Do not modify the link that theme dependent icons -->
<link rel="stylesheet" href="//at.alicdn.com/t/c/font_1749284_5i9bdhy70f8.css">
<link rel="stylesheet" href="//at.alicdn.com/t/font_1736178_lbnruvf0jn.css">
<link rel="stylesheet" href="/css/main.css" />
<link id="highlight-css" rel="stylesheet" href="/css/highlight.css" />
<link id="highlight-css-dark" rel="stylesheet" href="/css/highlight-dark.css" />
<script id="fluid-configs">
var Fluid = window.Fluid || {};
Fluid.ctx = Object.assign({}, Fluid.ctx)
var CONFIG = {"hostname":"username.github.io","root":"/","version":"1.9.8","typing":{"enable":true,"typeSpeed":70,"cursorChar":"_","loop":false,"scope":[]},"anchorjs":{"enable":true,"element":"h1,h2,h3,h4,h5,h6","placement":"left","visible":"hover","icon":""},"progressbar":{"enable":true,"height_px":3,"color":"#29d","options":{"showSpinner":false,"trickleSpeed":100}},"code_language":{"enable":true,"default":"TEXT"},"copy_btn":true,"image_caption":{"enable":true},"image_zoom":{"enable":true,"img_url_replace":["",""]},"toc":{"enable":true,"placement":"right","headingSelector":"h1,h2,h3,h4,h5,h6","collapseDepth":0},"lazyload":{"enable":true,"loading_img":"/img/loading.gif","onlypost":false,"offset_factor":2},"web_analytics":{"enable":false,"follow_dnt":true,"baidu":null,"google":null,"tencent":{"sid":null,"cid":null},"leancloud":{"app_id":null,"app_key":null,"server_url":null,"path":"window.location.pathname","ignore_local":false},"umami":{"src":null,"website_id":null,"domains":null,"start_time":"2024-01-01T00:00:00.000Z","token":null,"api_server":null},"gtag":null,"woyaola":null,"cnzz":null},"search_path":"/local-search.xml","include_content_in_search":true};
if (CONFIG.web_analytics.follow_dnt) {
var dntVal = navigator.doNotTrack || window.doNotTrack || navigator.msDoNotTrack;
Fluid.ctx.dnt = dntVal && (dntVal.startsWith('1') || dntVal.startsWith('yes') || dntVal.startsWith('on'));
}
</script>
<script src="/js/utils.js" ></script>
<script src="/js/color-schema.js" ></script>
<meta name="generator" content="Hexo 5.4.2"></head>
<body>
<header>
<div class="header-inner" style="height: 100vh;">
<nav id="navbar" class="navbar fixed-top navbar-expand-lg navbar-dark scrolling-navbar">
<div class="container">
<a class="navbar-brand" href="/">
<strong>Takuzen's Blog</strong>
</a>
<button id="navbar-toggler-btn" class="navbar-toggler" type="button" data-toggle="collapse"
data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<div class="animated-icon"><span></span><span></span><span></span></div>
</button>
<!-- Collapsible content -->
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav ml-auto text-center">
<li class="nav-item">
<a class="nav-link" href="/" target="_self">
<i class="iconfont icon-home-fill"></i>
<span>首页</span>
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="/archives/" target="_self">
<i class="iconfont icon-archive-fill"></i>
<span>归档</span>
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="/categories/" target="_self">
<i class="iconfont icon-category-fill"></i>
<span>分类</span>
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="/tags/" target="_self">
<i class="iconfont icon-tags-fill"></i>
<span>标签</span>
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="/about/" target="_self">
<i class="iconfont icon-user-fill"></i>
<span>关于</span>
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="/links/" target="_self">
<i class="iconfont icon-link-fill"></i>
<span>友链</span>
</a>
</li>
<li class="nav-item" id="search-btn">
<a class="nav-link" target="_self" href="javascript:;" data-toggle="modal" data-target="#modalSearch" aria-label="Search">
<i class="iconfont icon-search"></i>
</a>
</li>
<li class="nav-item" id="color-toggle-btn">
<a class="nav-link" target="_self" href="javascript:;" aria-label="Color Toggle">
<i class="iconfont icon-dark" id="color-toggle-icon"></i>
</a>
</li>
</ul>
</div>
</div>
</nav>
<div id="banner" class="banner" parallax=true
style="background: url('/img/default.png') no-repeat center center; background-size: cover;">
<div class="full-bg-img">
<div class="mask flex-center" style="background-color: rgba(0, 0, 0, 0.3)">
<div class="banner-text text-center fade-in-up">
<div class="h2">
<span id="subtitle" data-typed-text="Time tries all things."></span>
</div>
</div>
<div class="scroll-down-bar">
<i class="iconfont icon-arrowdown"></i>
</div>
</div>
</div>
</div>
</div>
</header>
<main>
<div class="container nopadding-x-md">
<div id="board"
style="margin-top: 0">
<div class="container">
<div class="row">
<div class="col-12 col-md-10 m-auto">
<div class="row mx-auto index-card">
<div class="col-12 col-md-4 m-auto index-img">
<a href="/2024/09/06/%E6%9F%A5%E6%BC%8F%E8%A1%A5%E7%BC%BA-Http%E7%BC%93%E5%AD%98/" target="_self">
<img src="https://raw.githubusercontent.com/Lzz1027/markdownImage/main/img/202409061429261.jpeg" srcset="/img/loading.gif" lazyload alt="查漏补缺-本地缓存与HTTP缓存">
</a>
</div>
<article class="col-12 col-md-8 mx-auto index-info">
<h2 class="index-header">
<a href="/2024/09/06/%E6%9F%A5%E6%BC%8F%E8%A1%A5%E7%BC%BA-Http%E7%BC%93%E5%AD%98/" target="_self">
查漏补缺-本地缓存与HTTP缓存
</a>
</h2>
<a class="index-excerpt " href="/2024/09/06/%E6%9F%A5%E6%BC%8F%E8%A1%A5%E7%BC%BA-Http%E7%BC%93%E5%AD%98/" target="_self">
<div>
什么是缓存？为什么要缓存？缓存是指将之前获取的资源或者文件暂存，以便下次访问时重复使用，由于不需要重新获取完整文件，可以节省带宽资源并提升访问速度 根据什么判断是否需要缓存一、系统访问频率1.当系统的访问频率较高时,使用缓存可以提高数据的读取速度。 例如,在一个电商网站中,商品列表是用户经常访问的内容之一。如果每次访问商品列表都要从数据库中读取数据,将会消耗大量的时间和系统资源。因此,可以将商品列
</div>
</a>
<div class="index-btm post-metas">
<div class="post-meta mr-3">
<i class="iconfont icon-date"></i>
<time datetime="2024-09-06 20:30" pubdate>
2024-09-06
</time>
</div>
<div class="post-meta mr-3 d-flex align-items-center">
<i class="iconfont icon-category"></i>
<span class="category-chains">
<span class="category-chain">
<a href="/categories/Leak-Filling/" class="category-chain-item">Leak Filling</a>
</span>
</span>
</div>
<div class="post-meta">
<i class="iconfont icon-tags"></i>
<a href="/tags/front-end/">#front end</a>
<a href="/tags/http/">#http</a>
<a href="/tags/cache/">#cache</a>
</div>
</div>
</article>
</div>
<div class="row mx-auto index-card">
<div class="col-12 col-md-4 m-auto index-img">
<a href="/2024/09/06/%E6%9F%A5%E6%BC%8F%E8%A1%A5%E7%BC%BA-%E5%89%8D%E7%AB%AF%E5%AE%89%E5%85%A8%E4%B9%8BXSS%E4%B8%8ECSRF/" target="_self">
<img src="https://raw.githubusercontent.com/Lzz1027/markdownImage/main/img/202409102147975.webp" srcset="/img/loading.gif" lazyload alt="查漏补缺-前端安全之XSS与CSRF">
</a>
</div>
<article class="col-12 col-md-8 mx-auto index-info">
<h2 class="index-header">
<a href="/2024/09/06/%E6%9F%A5%E6%BC%8F%E8%A1%A5%E7%BC%BA-%E5%89%8D%E7%AB%AF%E5%AE%89%E5%85%A8%E4%B9%8BXSS%E4%B8%8ECSRF/" target="_self">
查漏补缺-前端安全之XSS与CSRF
</a>
</h2>
<a class="index-excerpt " href="/2024/09/06/%E6%9F%A5%E6%BC%8F%E8%A1%A5%E7%BC%BA-%E5%89%8D%E7%AB%AF%E5%AE%89%E5%85%A8%E4%B9%8BXSS%E4%B8%8ECSRF/" target="_self">
<div>
XSSXSS(Cross Site Scripting)跨站脚本攻击 简称本应为css，但是为了防止与CSS(Cascading Style Sheets，层叠样式表)搞混，就取为xss 跨站脚本攻击就是用 JS 脚本攻击，案例如下： 情景模拟假设有一个前后端不分离的网站，后端用express搭建，文件 app.js 内容如下 12345678910111213141516const expr
</div>
</a>
<div class="index-btm post-metas">
<div class="post-meta mr-3">
<i class="iconfont icon-date"></i>
<time datetime="2024-09-06 20:30" pubdate>
2024-09-06
</time>
</div>
<div class="post-meta mr-3 d-flex align-items-center">
<i class="iconfont icon-category"></i>
<span class="category-chains">
<span class="category-chain">
<a href="/categories/Leak-Filling/" class="category-chain-item">Leak Filling</a>
</span>
</span>
</div>
<div class="post-meta">
<i class="iconfont icon-tags"></i>
<a href="/tags/front-end/">#front end</a>
<a href="/tags/http/">#http</a>
<a href="/tags/safe/">#safe</a>
<a href="/tags/xss/">#xss</a>
<a href="/tags/csrf/">#csrf</a>
</div>
</div>
</article>
</div>
<div class="row mx-auto index-card">
<div class="col-12 col-md-4 m-auto index-img">
<a href="/2024/07/13/%E4%BB%A3%E7%A0%81%E9%9A%8F%E6%83%B3%E5%BD%9510-%E5%8A%A8%E6%80%81%E8%A7%84%E5%88%92/" target="_self">
<img src="https://raw.githubusercontent.com/Lzz1027/markdownImage/main/img/20210614201246512.png" srcset="/img/loading.gif" lazyload alt="代码随想录10 动态规划">
</a>
</div>
<article class="col-12 col-md-8 mx-auto index-info">
<h2 class="index-header">
<a href="/2024/07/13/%E4%BB%A3%E7%A0%81%E9%9A%8F%E6%83%B3%E5%BD%9510-%E5%8A%A8%E6%80%81%E8%A7%84%E5%88%92/" target="_self">
代码随想录10 动态规划
</a>
</h2>
<a class="index-excerpt " href="/2024/07/13/%E4%BB%A3%E7%A0%81%E9%9A%8F%E6%83%B3%E5%BD%9510-%E5%8A%A8%E6%80%81%E8%A7%84%E5%88%92/" target="_self">
<div>
动态规划基础什么是动规？动态规划，英文：Dynamic Programming，简称DP，如果某一问题有很多重叠子问题，使用动态规划是最有效的。 动规问题的特点是每一个状态一定是由上一个状态推导出来的，这是与贪心的重要区别（贪心不推导状态，直接选取局部最优解） 解题步骤 确定dp数组（dp table）以及下标的含义 确定递推公式 dp数组如何初始化 确定遍历顺序 举例推导dp数组 LeetCo
</div>
</a>
<div class="index-btm post-metas">
<div class="post-meta mr-3">
<i class="iconfont icon-date"></i>
<time datetime="2024-07-13 20:30" pubdate>
2024-07-13
</time>
</div>
<div class="post-meta mr-3 d-flex align-items-center">
<i class="iconfont icon-category"></i>
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哈希表哈希表是根据值而直接进行访问的数据结构，数组就是一张哈希表，哈希表中的值就是数组的索引下标，然后通过下标直接访问数组中的元素，如下图所示： 一般哈希表都是用来快速判断一个元素是否出现集合里 Leetcode 242.有效的字母异位词力扣题目链接(opens new window) 给定两个字符串 s 和 t ，编写一个函数来判断 t 是否是 s 的字母异位词。 示例 1: 输入: s &#
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