-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy path53879.html
91 lines (80 loc) · 37.2 KB
/
53879.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
<!DOCTYPE HTML><html lang="zh-CN"><head><meta charset="utf-8"><meta name="keywords" content="笔试题, huang"><meta name="description" content=""><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no"><meta name="renderer" content="webkit|ie-stand|ie-comp"><meta name="mobile-web-app-capable" content="yes"><meta name="format-detection" content="telephone=no"><meta name="apple-mobile-web-app-capable" content="yes"><meta name="apple-mobile-web-app-status-bar-style" content="black-translucent"><script async src="https://www.googletagmanager.com/gtag/js?id="></script><script>function gtag(){dataLayer.push(arguments)}window.dataLayer=window.dataLayer||[],gtag("js",new Date),gtag("config","")</script><title>笔试题 | huang</title><link rel="icon" type="image/png" href="/favicon.png"><link rel="stylesheet" href="/libs/awesome/css/all.css"><link rel="stylesheet" href="/libs/materialize/materialize.min.css"><link rel="stylesheet" href="/libs/aos/aos.css"><link rel="stylesheet" href="/libs/animate/animate.min.css"><link rel="stylesheet" href="/libs/lightGallery/css/lightgallery.min.css"><link rel="stylesheet" href="/css/matery.css"><link rel="stylesheet" href="/css/my.css"><script src="/libs/jquery/jquery.min.js"></script><meta name="generator" content="Hexo 4.2.0"><link rel="alternate" href="/atom.xml" title="huang" type="application/atom+xml"></head><body><header class="navbar-fixed"><nav id="headNav" class="bg-color nav-transparent"><div id="navContainer" class="nav-wrapper container"><div class="brand-logo"><a href="/" class="waves-effect waves-light"><img src="/medias/logo.png" class="logo-img" alt="LOGO"> <span class="logo-span">huang</span></a></div><a href="#" data-target="mobile-nav" class="sidenav-trigger button-collapse"><i class="fas fa-bars"></i></a><ul class="right nav-menu"><li class="hide-on-med-and-down nav-item"><a href="/" class="waves-effect waves-light"><i class="fas fa-home" style="zoom:.6"></i> <span>首页</span></a></li><li class="hide-on-med-and-down nav-item"><a href="/tags" class="waves-effect waves-light"><i class="fas fa-tags" style="zoom:.6"></i> <span>标签</span></a></li><li class="hide-on-med-and-down nav-item"><a href="/categories" class="waves-effect waves-light"><i class="fas fa-bookmark" style="zoom:.6"></i> <span>分类</span></a></li><li class="hide-on-med-and-down nav-item"><a href="/archives" class="waves-effect waves-light"><i class="fas fa-archive" style="zoom:.6"></i> <span>归档</span></a></li><li class="hide-on-med-and-down nav-item"><a href="/about" class="waves-effect waves-light"><i class="fas fa-user-circle" style="zoom:.6"></i> <span>关于</span></a></li><li class="hide-on-med-and-down nav-item"><a href="/contact" class="waves-effect waves-light"><i class="fas fa-comments" style="zoom:.6"></i> <span>留言板</span></a></li><li class="hide-on-med-and-down nav-item"><a href="/friends" class="waves-effect waves-light"><i class="fas fa-address-book" style="zoom:.6"></i> <span>友情链接</span></a></li><li><a href="#searchModal" class="modal-trigger waves-effect waves-light"><i id="searchIcon" class="fas fa-search" title="搜索" style="zoom:.85"></i></a></li></ul><div id="mobile-nav" class="side-nav sidenav"><div class="mobile-head bg-color"><img src="/medias/logo.png" class="logo-img circle responsive-img"><div class="logo-name">huang</div><div class="logo-desc">Never really desperate, only the lost of the soul.</div></div><ul class="menu-list mobile-menu-list"><li class="m-nav-item"><a href="/" class="waves-effect waves-light"><i class="fa-fw fas fa-home"></i> 首页</a></li><li class="m-nav-item"><a href="/tags" class="waves-effect waves-light"><i class="fa-fw fas fa-tags"></i> 标签</a></li><li class="m-nav-item"><a href="/categories" class="waves-effect waves-light"><i class="fa-fw fas fa-bookmark"></i> 分类</a></li><li class="m-nav-item"><a href="/archives" class="waves-effect waves-light"><i class="fa-fw fas fa-archive"></i> 归档</a></li><li class="m-nav-item"><a href="/about" class="waves-effect waves-light"><i class="fa-fw fas fa-user-circle"></i> 关于</a></li><li class="m-nav-item"><a href="/contact" class="waves-effect waves-light"><i class="fa-fw fas fa-comments"></i> 留言板</a></li><li class="m-nav-item"><a href="/friends" class="waves-effect waves-light"><i class="fa-fw fas fa-address-book"></i> 友情链接</a></li><li><div class="divider"></div></li><li><a href="https://github.com/hyl2048" class="waves-effect waves-light" target="_blank"><i class="fab fa-github-square fa-fw"></i> Fork Me</a></li></ul></div></div><style>.nav-transparent .github-corner{display:none!important}.github-corner{position:absolute;z-index:10;top:0;right:0;border:0;transform:scale(1.1)}.github-corner svg{color:#0f9d58;fill:#fff;height:64px;width:64px}.github-corner:hover .octo-arm{animation:a .56s ease-in-out}.github-corner .octo-arm{animation:none}@keyframes a{0%,to{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}</style><a href="https://github.com/hyl2048" class="github-corner tooltipped hide-on-med-and-down" target="_blank" data-tooltip="Fork Me" data-position="left" data-delay="50"><svg viewBox="0 0 250 250" aria-hidden="true"><path d="M0 0 115 115 130 115 142 142 250 250 250 0Z"></path><path d="M128.3 109C113.8 99.7 119 89.6 119 89.6 122 82.7 120.5 78.6 120.5 78.6 119.2 72 123.4 76.3 123.4 76.3 127.3 80.9 125.5 87.3 125.5 87.3 122.9 97.6 130.6 101.9 134.4 103.2" fill="currentColor" style="transform-origin:130px 106px" class="octo-arm"></path><path d="M115 115C114.9 115.1 118.7 116.5 119.8 115.4L133.7 101.6C136.9 99.2 139.9 98.4 142.2 98.6 133.8 88 127.5 74.4 143.8 58 148.5 53.4 154 51.2 159.7 51 160.3 49.4 163.2 43.6 171.4 40.1 171.4 40.1 176.1 42.5 178.8 56.2 183.1 58.6 187.2 61.8 190.9 65.4 194.5 69 197.7 73.2 200.1 77.6 213.8 80.2 216.3 84.9 216.3 84.9 212.7 93.1 206.9 96 205.4 96.6 205.1 102.4 203 107.8 198.3 112.5 181.9 128.9 168.3 122.5 157.7 114.1 157.9 116.9 156.7 120.9 152.7 124.9L141 136.5C139.8 137.7 141.6 141.9 141.8 141.8Z" fill="currentColor" class="octo-body"></path></svg></a></nav></header><div class="bg-cover pd-header post-cover" style="background-image:url(/medias/featureimages/7.jpg)"><div class="container" style="right:0;left:0"><div class="row"><div class="col s12 m12 l12"><div class="brand"><h1 class="description center-align post-title">笔试题</h1></div></div></div></div></div><main class="post-container content"><link rel="stylesheet" href="/libs/tocbot/tocbot.css"><style>#articleContent h1::before,#articleContent h2::before,#articleContent h3::before,#articleContent h4::before,#articleContent h5::before,#articleContent h6::before{display:block;content:" ";height:100px;margin-top:-100px;visibility:hidden}#articleContent :focus{outline:0}.toc-fixed{position:fixed;top:64px}.toc-widget{width:345px;padding-left:20px}.toc-widget .toc-title{margin:35px 0 15px 0;padding-left:17px;font-size:1.5rem;font-weight:700;line-height:1.5rem}.toc-widget ol{padding:0;list-style:none}#toc-content{height:calc(100vh - 250px);overflow:auto}#toc-content ol{padding-left:10px}#toc-content ol li{padding-left:10px}#toc-content .toc-link:hover{color:#42b983;font-weight:700;text-decoration:underline}#toc-content .toc-link::before{background-color:transparent;max-height:25px}#toc-content .is-active-link{color:#42b983}#toc-content .is-active-link::before{background-color:#42b983}#floating-toc-btn{position:fixed;right:15px;bottom:76px;padding-top:15px;margin-bottom:0;z-index:998}#floating-toc-btn .btn-floating{width:48px;height:48px}#floating-toc-btn .btn-floating i{line-height:48px;font-size:1.4rem}</style><div class="row"><div id="main-content" class="col s12 m12 l9"><div id="artDetail"><div class="card"><div class="card-content article-info"><div class="row tag-cate"><div class="col s7"><div class="article-tag"><span class="chip bg-color">无标签</span></div></div><div class="col s5 right-align"></div></div><div class="post-info"><div class="post-date info-break-policy"><i class="far fa-calendar-minus fa-fw"></i> 发布日期: 2020-09-09</div></div></div><hr class="clearfix"><div class="card-content article-card-content"><div id="articleContent"><h1 id="算法与数据结构"><a href="#算法与数据结构" class="headerlink" title="算法与数据结构"></a>算法与数据结构</h1><h2 id="笔试题"><a href="#笔试题" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题"><a href="#面试题" class="headerlink" title="面试题"></a>面试题</h2><h1 id="计算机网络"><a href="#计算机网络" class="headerlink" title="计算机网络"></a>计算机网络</h1><h2 id="笔试题-1"><a href="#笔试题-1" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-1"><a href="#面试题-1" class="headerlink" title="面试题"></a>面试题</h2><p>TCP/IP协议族</p><p>http协议（应用层协议）</p><p><a href="https://zhuanlan.zhihu.com/p/60305452" target="_blank" rel="noopener">常见面试题1</a></p><p><a href="https://bbs.huaweicloud.com/blogs/224939" target="_blank" rel="noopener">TCP 为什么三次握手而不是两次握手</a></p><p><a href="https://segmentfault.com/a/1190000020610336" target="_blank" rel="noopener">为何是四次挥手</a></p><h1 id="操作系统"><a href="#操作系统" class="headerlink" title="操作系统"></a>操作系统</h1><h2 id="笔试题-2"><a href="#笔试题-2" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-2"><a href="#面试题-2" class="headerlink" title="面试题"></a>面试题</h2><h1 id="Linux系统"><a href="#Linux系统" class="headerlink" title="Linux系统"></a>Linux系统</h1><h2 id="笔试题-3"><a href="#笔试题-3" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-3"><a href="#面试题-3" class="headerlink" title="面试题"></a>面试题</h2><h1 id="数据库"><a href="#数据库" class="headerlink" title="数据库"></a>数据库</h1><h2 id="笔试题-4"><a href="#笔试题-4" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-4"><a href="#面试题-4" class="headerlink" title="面试题"></a>面试题</h2><h3 id="写sql语句"><a href="#写sql语句" class="headerlink" title="写sql语句"></a>写sql语句</h3><p> <a href="https://www.cnblogs.com/rainman/archive/2013/05/01/3053703.html" target="_blank" rel="noopener">order by的用法</a></p><p> <a href="https://mp.weixin.qq.com/s?__biz=MzI4Njc5NjM1NQ==&mid=2247483693&idx=1&sn=9fa301b0076778cd854a924e96cc356e&chksm=ebd63e01dca1b71745dca1f7e1c2aa2b7c80a393185db690b4fdfba22bb10ca87ea2cd6fa774&scene=21#wechat_redirect" target="_blank" rel="noopener">sql练习题1</a></p><p> <a href="https://mp.weixin.qq.com/s?__biz=MzI4Njc5NjM1NQ==&mid=2247483696&idx=1&sn=5f472ce7720aede89e2e15ea64bed1bc&chksm=ebd63e1cdca1b70ad18dec268c9903b2cbe11f9ce7b0633980c78a28bd5b1b57c4efbe7a3411&scene=21#wechat_redirect" target="_blank" rel="noopener">sql练习题2</a></p><h3 id="事物传播机制"><a href="#事物传播机制" class="headerlink" title="事物传播机制"></a>事物传播机制</h3><p> <a href="https://zhuanlan.zhihu.com/p/148504094" target="_blank" rel="noopener">七种传播类型</a></p><h3 id="ORM框架"><a href="#ORM框架" class="headerlink" title="ORM框架"></a>ORM框架</h3><p> <a href="https://cloud.tencent.com/developer/article/1478393" target="_blank" rel="noopener">MyBatis和Hibernate的区别</a></p><p> MyBatis</p><p> Hibernate</p><p> JPA</p><p></p><h1 id="Java语言"><a href="#Java语言" class="headerlink" title="Java语言"></a>Java语言</h1><h2 id="基础特性"><a href="#基础特性" class="headerlink" title="基础特性"></a>基础特性</h2><h3 id="笔试题-5"><a href="#笔试题-5" class="headerlink" title="笔试题"></a>笔试题</h3><p>构造函数：构造函数和继承联系在一起；</p><p>封装</p><p> 修改属性的可见性</p><p>继承</p><p>多态</p><p> 多态的实现方式：重写；接口；抽象类和抽象方法；</p><p>内部类</p><p>函数修饰符：访问权限；static；</p><p>基本数据类型：范围；<a href="https://blog.csdn.net/ToughCY/article/details/108585013" target="_blank" rel="noopener">自动类型转换与ASSIC码表</a>；</p><p><a href="https://blog.csdn.net/Coding_Zhu/article/details/53096178" target="_blank" rel="noopener">基本数据类型与引用数据类型</a></p><p>操作符：<a href="https://www.cnblogs.com/yif0118/p/10425013.html" target="_blank" rel="noopener">自增自减</a>；运算符优先级；左移位、右移位；</p><p><a href="https://www.cnblogs.com/dolphin0520/p/3780005.html" target="_blank" rel="noopener">装箱和拆箱</a>；<a href="https://zhuanlan.zhihu.com/p/64004059" target="_blank" rel="noopener">装箱和拆箱参考2-要注意的问题</a></p><p><a href="https://leer.moe/2018/12/14/java-fun-object-method/" target="_blank" rel="noopener">Object的11个方法（3+2+5+1）</a></p><p><a href="https://zhuanlan.zhihu.com/p/58337357" target="_blank" rel="noopener">hashCode和equals</a></p><p><a href="https://www.cnblogs.com/qianguyihao/p/3929585.html" target="_blank" rel="noopener">equal和==的区别</a></p><p><a href="https://juejin.cn/post/6844903913116680199" target="_blank" rel="noopener">String.intern方法</a></p><p><a href="https://www.jianshu.com/p/8c724dd28fa4" target="_blank" rel="noopener">StringBuffer和StringBuilder的区别</a></p><p><a href="https://somelou.xyz/p/3958123573/" target="_blank" rel="noopener">ArrayList和linkedList的区别</a></p><p><a href="https://juejin.cn/post/6844903925460500487#heading-6" target="_blank" rel="noopener">HashMap和HashTable的区别</a></p><p><a href="https://juejin.cn/post/6844903555149594638" target="_blank" rel="noopener">Hashmap不同版本详解（主要为1.7与1.8之间）</a></p><p><a href="https://www.jianshu.com/p/1197e4717194" target="_blank" rel="noopener">ConcurrentHashMap 和 HashMap 对比介绍,1.7 和 1.8 版本区别</a></p><p><a href="https://juejin.cn/post/6844903924911046663" target="_blank" rel="noopener">Java并发容器</a></p><p><a href="https://juejin.cn/post/6844903665241686029" target="_blank" rel="noopener">Java的四种引用，强弱软虚</a></p><p><a href="https://www.jianshu.com/p/68ddb5484ca2" target="_blank" rel="noopener">什么是多态，实现多态的机制是什么？</a></p><p>Java创建对象有几种方式？</p><p>有没有可能两个不相等的对象有相同的hashcode</p><p>final 修饰符</p><p>static 修饰符</p><p>异常：异常分类；常见异常类型；</p><p><a href="https://blog.csdn.net/ThinkWon/article/details/104588551" target="_blank" rel="noopener">集合框架</a></p><p> 线程安全性</p><p>Object类</p><p> 深拷贝与浅拷贝</p><p><a href="https://www.cnblogs.com/Qian123/p/5715402.html#_label1" target="_blank" rel="noopener">异常</a></p><p>泛型</p><p><a href="https://www.cnblogs.com/happyone/p/12663145.html" target="_blank" rel="noopener">IO流</a></p><p>序列化</p><p>网络编程</p><p> socket</p><p> BIO、NIO、AIO</p><p> 状态码</p><p>多线程编程</p><p> <a href="https://blog.csdn.net/ThinkWon/article/details/102021274" target="_blank" rel="noopener">线程和进程的区别</a></p><p> <a href="https://segmentfault.com/a/1190000037589073" target="_blank" rel="noopener">线程创建</a>和<a href="https://juejin.cn/post/6844903699546898445" target="_blank" rel="noopener">结束</a></p><p> <a href="https://segmentfault.com/a/1190000030688673?utm_source=sf-similar-article" target="_blank" rel="noopener">线程的状态</a></p><p> 线程池</p><p> 锁（JVM）</p><p> <a href="https://blog.csdn.net/zqz_zqz/article/details/70233767" target="_blank" rel="noopener">关于锁0</a></p><p> <a href="https://blog.csdn.net/renwei289443/article/details/79540809" target="_blank" rel="noopener">关于锁1</a></p><p> <a href="https://www.cnblogs.com/jyroy/p/11365935.html" target="_blank" rel="noopener">关于锁2</a></p><p> <a href="https://mp.weixin.qq.com/s?__biz=MjM5NjQ5MTI5OA==&mid=2651749434&idx=3&sn=5ffa63ad47fe166f2f1a9f604ed10091&chksm=bd12a5778a652c61509d9e718ab086ff27ad8768586ea9b38c3dcf9e017a8e49bcae3df9bcc8&scene=38#wechat_redirect" target="_blank" rel="noopener">关于锁3</a></p><p> <a href="https://juejin.cn/post/6844903726268809224" target="_blank" rel="noopener">分布式锁实现方式</a></p><p> 数据库乐观锁</p><p> <a href="https://mp.weixin.qq.com/s/qJK61ew0kCExvXrqb7-RSg" target="_blank" rel="noopener">redis 分布式锁 setnx</a></p><p> 基于Zookeeper的分布式锁</p><p> <a href="https://juejin.cn/post/6844903688088059912" target="_blank" rel="noopener">分布式锁总结</a></p><p> <a href="https://segmentfault.com/a/1190000015558984" target="_blank" rel="noopener">JUC包</a></p><h3 id="面试题-5"><a href="#面试题-5" class="headerlink" title="面试题"></a>面试题</h3><h1 id="JSP"><a href="#JSP" class="headerlink" title="JSP"></a><a href="https://www.runoob.com/jsp/jsp-tutorial.html" target="_blank" rel="noopener">JSP</a></h1><pre><code class="jsp"><%@ page%>的作用</code></pre><h1 id="JavaScript"><a href="#JavaScript" class="headerlink" title="JavaScript"></a><a href="https://www.runoob.com/js/js-tutorial.html" target="_blank" rel="noopener">JavaScript</a></h1><h1 id="并发编程"><a href="#并发编程" class="headerlink" title="并发编程"></a>并发编程</h1><p><a href="https://crossoverjie.top/2018/01/25/ReentrantLock/" target="_blank" rel="noopener">ReentrantLock 实现原理</a></p><p><a href="https://www.javazhiyin.com/42563.html" target="_blank" rel="noopener">如何保证线程的执行顺序</a></p><h2 id="高级特性"><a href="#高级特性" class="headerlink" title="高级特性"></a>高级特性</h2><h3 id="笔试题-6"><a href="#笔试题-6" class="headerlink" title="笔试题"></a>笔试题</h3><h3 id="面试题-6"><a href="#面试题-6" class="headerlink" title="面试题"></a>面试题</h3><h1 id="计算机组成原理"><a href="#计算机组成原理" class="headerlink" title="计算机组成原理"></a>计算机组成原理</h1><h2 id="笔试题-7"><a href="#笔试题-7" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-7"><a href="#面试题-7" class="headerlink" title="面试题"></a>面试题</h2><h1 id="编译原理"><a href="#编译原理" class="headerlink" title="编译原理"></a>编译原理</h1><h2 id="笔试题-8"><a href="#笔试题-8" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-8"><a href="#面试题-8" class="headerlink" title="面试题"></a>面试题</h2><h1 id="网络安全"><a href="#网络安全" class="headerlink" title="网络安全"></a>网络安全</h1><h2 id="笔试题-9"><a href="#笔试题-9" class="headerlink" title="笔试题"></a>笔试题</h2><p><a href="https://juejin.cn/post/6844903638117122056#heading-13" target="_blank" rel="noopener">常见的对称加密算法</a></p><p> <a href="https://www.cnblogs.com/zhuyeshen/p/11424734.html" target="_blank" rel="noopener">MD5非对称加密算法</a></p><h2 id="面试题-9"><a href="#面试题-9" class="headerlink" title="面试题"></a>面试题</h2><h1 id="Html、css、JS"><a href="#Html、css、JS" class="headerlink" title="Html、css、JS"></a>Html、css、JS</h1><h2 id="笔试题-10"><a href="#笔试题-10" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-10"><a href="#面试题-10" class="headerlink" title="面试题"></a>面试题</h2><h2 id="Tomcat"><a href="#Tomcat" class="headerlink" title="Tomcat"></a>Tomcat</h2><p><a href="https://blog.csdn.net/lifetragedy/article/details/7708724" target="_blank" rel="noopener">tomcat调优参数</a></p><h1 id="Spring"><a href="#Spring" class="headerlink" title="Spring"></a>Spring</h1><h2 id="笔试题-11"><a href="#笔试题-11" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-11"><a href="#面试题-11" class="headerlink" title="面试题"></a>面试题</h2><h1 id="Spring-Boot"><a href="#Spring-Boot" class="headerlink" title="Spring Boot"></a>Spring Boot</h1><h2 id="笔试题-12"><a href="#笔试题-12" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-12"><a href="#面试题-12" class="headerlink" title="面试题"></a>面试题</h2><h1 id="Spring-Cloud"><a href="#Spring-Cloud" class="headerlink" title="Spring Cloud"></a>Spring Cloud</h1><h2 id="笔试题-13"><a href="#笔试题-13" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-13"><a href="#面试题-13" class="headerlink" title="面试题"></a>面试题</h2><p><a href="https://www.redhat.com/zh/topics/microservices/what-are-microservices" target="_blank" rel="noopener">微服务</a>的理解，微服务的<a href="https://www.infoq.cn/article/evt4qkropmzqphx1xzfa" target="_blank" rel="noopener">特点，优缺点</a></p><h1 id="中间件"><a href="#中间件" class="headerlink" title="中间件"></a>中间件</h1><h2 id="Zookeeper"><a href="#Zookeeper" class="headerlink" title="Zookeeper"></a>Zookeeper</h2><h3 id="笔试题-14"><a href="#笔试题-14" class="headerlink" title="笔试题"></a>笔试题</h3><h3 id="面试题-14"><a href="#面试题-14" class="headerlink" title="面试题"></a>面试题</h3><h2 id="Dubble"><a href="#Dubble" class="headerlink" title="Dubble"></a>Dubble</h2><h3 id="笔试题-15"><a href="#笔试题-15" class="headerlink" title="笔试题"></a>笔试题</h3><h3 id="面试题-15"><a href="#面试题-15" class="headerlink" title="面试题"></a>面试题</h3><h1 id="系统设计"><a href="#系统设计" class="headerlink" title="系统设计"></a>系统设计</h1><h2 id="笔试题-16"><a href="#笔试题-16" class="headerlink" title="笔试题"></a>笔试题</h2><h2 id="面试题-16"><a href="#面试题-16" class="headerlink" title="面试题"></a>面试题</h2><h1 id="分布式"><a href="#分布式" class="headerlink" title="分布式"></a>分布式</h1><h2 id="笔试题-17"><a href="#笔试题-17" class="headerlink" title="笔试题"></a>笔试题</h2><p>库存超卖</p><p> redis原子操作+sql乐观锁</p><p><a href="https://tech.meituan.com/2016/09/29/distributed-system-mutually-exclusive-idempotence-cerberus-gtis.html" target="_blank" rel="noopener">接口幂等性</a></p><p> redis 分布式锁</p><p>促销活动高并发问题</p><h2 id="面试题-17"><a href="#面试题-17" class="headerlink" title="面试题"></a>面试题</h2></div><hr><div class="reprint" id="reprint-statement"><div class="reprint__author"><span class="reprint-meta" style="font-weight:700"><i class="fas fa-user">文章作者:</i></span> <span class="reprint-info"><a href="https://hyl2048.github.io" rel="external nofollow noreferrer">yulin</a></span></div><div class="reprint__type"><span class="reprint-meta" style="font-weight:700"><i class="fas fa-link">文章链接:</i></span> <span class="reprint-info"><a href="https://hyl2048.github.io/53879.html">https://hyl2048.github.io/53879.html</a></span></div><div class="reprint__notice"><span class="reprint-meta" style="font-weight:700"><i class="fas fa-copyright">版权声明:</i></span> <span class="reprint-info">本博客所有文章除特別声明外，均采用 <a href="https://creativecommons.org/licenses/by/4.0/deed.zh" rel="external nofollow noreferrer" target="_blank">CC BY 4.0</a> 许可协议。转载请注明来源 <a href="https://hyl2048.github.io" target="_blank">yulin</a> !</span></div></div><script async defer>document.addEventListener("copy", function (e) {
let toastHTML = '<span>复制成功，请遵循本文的转载规则</span><button class="btn-flat toast-action" onclick="navToReprintStatement()" style="font-size: smaller">查看</a>';
M.toast({html: toastHTML})
});
function navToReprintStatement() {
$("html, body").animate({scrollTop: $("#reprint-statement").offset().top - 80}, 800);
}</script><div class="tag_share" style="display:block"><div class="post-meta__tag-list" style="display:inline-block"><div class="article-tag"><span class="chip bg-color">无标签</span></div></div><div class="post_share" style="zoom:80%;width:fit-content;display:inline-block;float:right;margin:-.15rem 0"><link rel="stylesheet" href="/libs/share/css/share.min.css"><div id="article-share"><div class="social-share" data-sites="twitter,facebook,google,qq,qzone,wechat,weibo,douban,linkedin" data-wechat-qrcode-helper="<p>微信扫一扫即可分享！</p>"></div><script src="/libs/share/js/social-share.min.js"></script></div></div></div><style>#reward{margin:40px 0;text-align:center}#reward .reward-link{font-size:1.4rem;line-height:38px}#reward .btn-floating:hover{box-shadow:0 6px 12px rgba(0,0,0,.2),0 5px 15px rgba(0,0,0,.2)}#rewardModal{width:320px;height:350px}#rewardModal .reward-title{margin:15px auto;padding-bottom:5px}#rewardModal .modal-content{padding:10px}#rewardModal .close{position:absolute;right:15px;top:15px;color:rgba(0,0,0,.5);font-size:1.3rem;line-height:20px;cursor:pointer}#rewardModal .close:hover{color:#ef5350;transform:scale(1.3);-moz-transform:scale(1.3);-webkit-transform:scale(1.3);-o-transform:scale(1.3)}#rewardModal .reward-tabs{margin:0 auto;width:210px}.reward-tabs .tabs{height:38px;margin:10px auto;padding-left:0}.reward-content ul{padding-left:0!important}.reward-tabs .tabs .tab{height:38px;line-height:38px}.reward-tabs .tab a{color:#fff;background-color:#ccc}.reward-tabs .tab a:hover{background-color:#ccc;color:#fff}.reward-tabs .wechat-tab .active{color:#fff!important;background-color:#22ab38!important}.reward-tabs .alipay-tab .active{color:#fff!important;background-color:#019fe8!important}.reward-tabs .reward-img{width:210px;height:210px}</style><div id="reward"><a href="#rewardModal" class="reward-link modal-trigger btn-floating btn-medium waves-effect waves-light red">赏</a><div id="rewardModal" class="modal"><div class="modal-content"><a class="close modal-close"><i class="fas fa-times"></i></a><h4 class="reward-title">你的赏识是我前进的动力</h4><div class="reward-content"><div class="reward-tabs"><ul class="tabs row"><li class="tab col s6 alipay-tab waves-effect waves-light"><a href="#alipay">支付宝</a></li><li class="tab col s6 wechat-tab waves-effect waves-light"><a href="#wechat">微 信</a></li></ul><div id="alipay"><img src="/medias/reward/alipay.jpg" class="reward-img" alt="支付宝打赏二维码"></div><div id="wechat"><img src="/medias/reward/wechat.jpg" class="reward-img" alt="微信打赏二维码"></div></div></div></div></div></div><script>$(function(){$(".tabs").tabs()})</script></div></div><link rel="stylesheet" href="/libs/gitalk/gitalk.css"><link rel="stylesheet" href="/css/my-gitalk.css"><div class="card gitalk-card" data-aos="fade-up"><div class="comment_headling" style="font-size:20px;font-weight:700;position:relative;padding-left:20px;top:15px;padding-bottom:5px"><i class="fas fa-comments fa-fw" aria-hidden="true"></i> <span>评论</span></div><div id="gitalk-container" class="card-content"></div></div><script src="/libs/gitalk/gitalk.min.js"></script><script>let gitalk = new Gitalk({
clientID: '9e23a93e6d565c5b255e',
clientSecret: '3b42941e0d79049bad19fac40d7d0c1cae96edbe',
repo: 'hyl2048.github.io',
owner: 'hyl2048',
admin: "hyl2048",
id: '2020-09-09T14-12-05',
distractionFreeMode: false, // Facebook-like distraction free mode
proxy: "https://antiproxy.hyl2048.workers.dev/?https://github.com/login/oauth/access_token"
});
gitalk.render('gitalk-container');</script><article id="prenext-posts" class="prev-next articles"><div class="row article-row"><div class="article col s12 m6" data-aos="fade-up"><div class="article-badge left-badge text-color"><i class="fas fa-chevron-left"></i> 上一篇</div><div class="card"><a href="/55715.html"><div class="card-image"><img src="/medias/featureimages/3.jpg" class="responsive-img" alt="Servlet"> <span class="card-title">Servlet</span></div></a><div class="card-content article-content"><div class="summary block-with-text"></div><div class="publish-info"><span class="publish-date"><i class="far fa-clock fa-fw icon-date"></i> 2020-09-10</span><span class="publish-author"><i class="fas fa-user fa-fw"></i> yulin</span></div></div></div></div><div class="article col s12 m6" data-aos="fade-up"><div class="article-badge right-badge text-color">下一篇 <i class="fas fa-chevron-right"></i></div><div class="card"><a href="/30259.html"><div class="card-image"><img src="/medias/featureimages/22.jpg" class="responsive-img" alt="win-10-移动热点"> <span class="card-title">win-10-移动热点</span></div></a><div class="card-content article-content"><div class="summary block-with-text"></div><div class="publish-info"><span class="publish-date"><i class="far fa-clock fa-fw icon-date"></i> 2020-09-08</span><span class="publish-author"><i class="fas fa-user fa-fw"></i> yulin</span></div></div></div></div></div></article></div><script>$("#articleContent").on("copy",function(e){if(void 0!==window.getSelection){var n=window.getSelection();if(!((""+n).length<Number.parseInt("120"))){var t=document.getElementsByTagName("body")[0],o=document.createElement("div");o.style.position="absolute",o.style.left="-99999px",t.appendChild(o),o.appendChild(n.getRangeAt(0).cloneContents()),"PRE"===n.getRangeAt(0).commonAncestorContainer.nodeName&&(o.innerHTML="<pre>"+o.innerHTML+"</pre>");var i=document.location.href;o.innerHTML+='<br />来源: huang<br />文章作者: yulin<br />文章链接: <a href="'+i+'">'+i+"</a><br />本文章著作权归作者所有，任何形式的转载都请注明出处。",n.selectAllChildren(o),window.setTimeout(function(){t.removeChild(o)},200)}}})</script><script src="/libs/codeBlock/codeBlockFuction.js"></script><script src="/libs/codeBlock/codeLang.js"></script><script src="/libs/codeBlock/codeCopy.js"></script><script src="/libs/codeBlock/codeShrink.js"></script><style>code[class*=language-],pre[class*=language-]{white-space:pre!important}</style></div><div id="toc-aside" class="expanded col l3 hide-on-med-and-down"><div class="toc-widget"><div class="toc-title"><i class="far fa-list-alt"></i> 目录</div><div id="toc-content"></div></div></div></div><div id="floating-toc-btn" class="hide-on-med-and-down"><a class="btn-floating btn-large bg-color"><i class="fas fa-list-ul"></i></a></div><script src="/libs/tocbot/tocbot.min.js"></script><script>$(function () {
tocbot.init({
tocSelector: '#toc-content',
contentSelector: '#articleContent',
headingsOffset: -($(window).height() * 0.4 - 45),
collapseDepth: Number('0'),
headingSelector: 'h2, h3, h4'
});
// modify the toc link href to support Chinese.
let i = 0;
let tocHeading = 'toc-heading-';
$('#toc-content a').each(function () {
$(this).attr('href', '#' + tocHeading + (++i));
});
// modify the heading title id to support Chinese.
i = 0;
$('#articleContent').children('h2, h3, h4').each(function () {
$(this).attr('id', tocHeading + (++i));
});
// Set scroll toc fixed.
let tocHeight = parseInt($(window).height() * 0.4 - 64);
let $tocWidget = $('.toc-widget');
$(window).scroll(function () {
let scroll = $(window).scrollTop();
/* add post toc fixed. */
if (scroll > tocHeight) {
$tocWidget.addClass('toc-fixed');
} else {
$tocWidget.removeClass('toc-fixed');
}
});
/* 修复文章卡片 div 的宽度. */
let fixPostCardWidth = function (srcId, targetId) {
let srcDiv = $('#' + srcId);
if (srcDiv.length === 0) {
return;
}
let w = srcDiv.width();
if (w >= 450) {
w = w + 21;
} else if (w >= 350 && w < 450) {
w = w + 18;
} else if (w >= 300 && w < 350) {
w = w + 16;
} else {
w = w + 14;
}
$('#' + targetId).width(w);
};
// 切换TOC目录展开收缩的相关操作.
const expandedClass = 'expanded';
let $tocAside = $('#toc-aside');
let $mainContent = $('#main-content');
$('#floating-toc-btn .btn-floating').click(function () {
if ($tocAside.hasClass(expandedClass)) {
$tocAside.removeClass(expandedClass).hide();
$mainContent.removeClass('l9');
} else {
$tocAside.addClass(expandedClass).show();
$mainContent.addClass('l9');
}
fixPostCardWidth('artDetail', 'prenext-posts');
});
});</script></main><script src="https://cdn.bootcss.com/mathjax/2.7.5/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script><script>MathJax.Hub.Config({tex2jax:{inlineMath:[["$","$"],["(",")"]]}})</script><footer class="page-footer bg-color"><link rel="stylesheet" href="/libs/aplayer/APlayer.min.css"><style>.aplayer .aplayer-lrc p{font-size:12px;font-weight:700;line-height:16px!important}.aplayer .aplayer-lrc p.aplayer-lrc-current{font-size:15px;color:#42b983}.aplayer.aplayer-fixed.aplayer-narrow .aplayer-body{left:-66px!important}.aplayer.aplayer-fixed.aplayer-narrow .aplayer-body:hover{left:0!important}</style><div><div><meting-js class="col l8 offset-l2 m10 offset-m1 s12" server="netease" type="playlist" id="503838841" fixed="true" autoplay theme="#42b983" loop order="random" preload="auto" volume="0.7" list-folded="true"></meting-js></div></div><script src="/libs/aplayer/APlayer.min.js"></script><script src="https://cdn.jsdelivr.net/npm/meting@2/dist/Meting.min.js"></script><div class="container row center-align"><div class="col s12 m8 l8 copy-right">©huang. 版权所有 <i class="fa fa-area-chart"></i> 站点总字数: <span class="white-color">105.1k</span><br><span id="sitetime"></span><br><span id="busuanzi_container_site_pv" style="display:none"><i class="fa fa-heart-o"></i> 本站总访问量<span id="busuanzi_value_site_pv" class="white-color"></span></span> <span id="busuanzi_container_site_uv" style="display:none">人次, 访客数<span id="busuanzi_value_site_uv" class="white-color"></span> 人.</span></div><div class="col s12 m4 l4 social-link social-statis"><a href="https://github.com/hyl2048" class="tooltipped" target="_blank" data-tooltip="访问我的GitHub" data-position="top" data-delay="50"><i class="fab fa-github"></i></a><a href="mailto:[email protected]" class="tooltipped" target="_blank" data-tooltip="邮件联系我" data-position="top" data-delay="50"><i class="fas fa-envelope-open"></i></a><a href="tencent://AddContact/?fromId=50&fromSubId=1&subcmd=all&uin=2745506937" class="tooltipped" target="_blank" data-tooltip="QQ联系我: 2745506937" data-position="top" data-delay="50"><i class="fab fa-qq"></i></a><a href="/atom.xml" class="tooltipped" target="_blank" data-tooltip="RSS 订阅" data-position="top" data-delay="50"><i class="fas fa-rss"></i></a></div></div></footer><div class="progress-bar"></div><script>$(document).ready(function(){var e=setInterval(function(){"none"!=document.getElementById("busuanzi_container_site_pv").style.display&&($("#busuanzi_value_site_pv").html(parseInt($("#busuanzi_value_site_pv").html())+n),clearInterval(e));"none"!=$("#busuanzi_container_site_pv").css("display")&&($("#busuanzi_value_site_uv").html(parseInt($("#busuanzi_value_site_uv").html())+t),clearInterval(e))},50),n=0,t=0})</script><script language="javascript">function siteTime(){window.setTimeout("siteTime()",1e3);var e=36e5,t=24*e,o=new Date,i=o.getFullYear(),a=o.getMonth()+1,n=o.getDate(),r=o.getHours(),l=o.getMinutes(),s=o.getSeconds(),M=Date.UTC(2020,3,28,0,0,0),g=Date.UTC(i,a,n,r,l,s)-M,m=Math.floor(g/31536e6),T=Math.floor(g/t-365*m),f=Math.floor((g-(365*m+T)*t)/e),h=Math.floor((g-(365*m+T)*t-f*e)/6e4),u=Math.floor((g-(365*m+T)*t-f*e-6e4*h)/1e3);document.getElementById("sitetime").innerHTML="本站已运行 "+m+" 年 "+T+" 天 "+f+" 小时 "+h+" 分钟 "+u+" 秒"}siteTime()</script><div id="searchModal" class="modal"><div class="modal-content"><div class="search-header"><span class="title"><i class="fas fa-search"></i> 搜索</span> <input type="search" id="searchInput" name="s" placeholder="请输入搜索的关键字" class="search-input"></div><div id="searchResult"></div></div></div><script src="/js/search.js"></script><script>$(function(){searchFunc("/search.xml","searchInput","searchResult")})</script><div id="backTop" class="top-scroll"><a class="btn-floating btn-large waves-effect waves-light" href="#!"><i class="fas fa-arrow-up"></i></a></div><script src="/libs/materialize/materialize.min.js"></script><script src="/libs/masonry/masonry.pkgd.min.js"></script><script src="/libs/aos/aos.js"></script><script src="/libs/scrollprogress/scrollProgress.min.js"></script><script src="/libs/lightGallery/js/lightgallery-all.min.js"></script><script src="/js/matery.js"></script><script>var _hmt=_hmt||[];!function(){var e=document.createElement("script");e.src="https://hm.baidu.com/hm.js?";var t=document.getElementsByTagName("script")[0];t.parentNode.insertBefore(e,t)}()</script><script>!function(){var t=document.createElement("script"),e=window.location.protocol.split(":")[0];t.src="https"===e?"https://zz.bdstatic.com/linksubmit/push.js":"http://push.zhanzhang.baidu.com/push.js";var s=document.getElementsByTagName("script")[0];s.parentNode.insertBefore(t,s)}()</script><script src="/libs/others/clicklove.js" async></script><script async src="/libs/others/busuanzi.pure.mini.js"></script><script src="/libs/instantpage/instantpage.js" type="module"></script></body></html>