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首页</span></a></div><div class="menus_item"><a class="site-page" href="/archives/"><i class="fa-fw fas fa-archive"></i><span> 时间轴</span></a></div><div class="menus_item"><a class="site-page" href="/tags/"><i class="fa-fw fas fa-tags"></i><span> 标签</span></a></div><div class="menus_item"><a class="site-page" href="/categories/"><i class="fa-fw fas fa-folder-open"></i><span> 分类</span></a></div><div class="menus_item"><a class="site-page" href="/link/"><i class="fa-fw fas fa-link"></i><span> 友链</span></a></div><div class="menus_item"><a class="site-page" href="/about/"><i class="fa-fw fas fa-heart"></i><span> 关于</span></a></div><div class="menus_item"><a class="site-page" target="_blank" rel="noopener" href="https://travellings.cn/go.html"><i class="fa-fw fas fa-train"></i><span> 开往</span></a></div></div><div id="toggle-menu"><a class="site-page" href="javascript:void(0);"><i class="fas fa-bars fa-fw"></i></a></div></div></nav><div id="site-info"><h1 id="site-title">小沃的博客</h1><div id="site-subtitle"><span id="subtitle"></span></div><div id="site_social_icons"><a class="social-icon" href="https://github.com/xiaowoonly" target="_blank" title="Github"><i class="fab fa-github"></i></a><a class="social-icon" href="mailto:[email protected]" target="_blank" title="Email"><i class="fas fa-envelope"></i></a></div></div><div id="scroll-down"><i class="fas fa-angle-down scroll-down-effects"></i></div></header><main class="layout" id="content-inner"><div class="recent-posts" id="recent-posts"><div class="recent-post-item"><div class="post_cover left"><a href="/2023/04/11/ThreadPoolExecutor%E5%92%8CThreadPoolTaskExecutor/" title="ThreadPoolExecutor和ThreadPoolTaskExecutor"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover6.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="ThreadPoolExecutor和ThreadPoolTaskExecutor"></a></div><div class="recent-post-info"><a class="article-title" href="/2023/04/11/ThreadPoolExecutor%E5%92%8CThreadPoolTaskExecutor/" title="ThreadPoolExecutor和ThreadPoolTaskExecutor">ThreadPoolExecutor和ThreadPoolTaskExecutor</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 class="post-meta-date-created" datetime="2023-04-11T09:55:00.000Z" title="发表于 2023-04-11 17:55:00">2023-04-11</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2023-04-11T09:55:00.000Z" title="更新于 2023-04-11 17:55:00">2023-04-11</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/ThreadPoolExecutor/">ThreadPoolExecutor</a><i class="fas fa-angle-right article-meta-link"></i><a class="article-meta__categories" href="/categories/ThreadPoolExecutor/ThreadPoolTaskExecutor/">ThreadPoolTaskExecutor</a><i class="fas fa-angle-right article-meta-link"></i><a class="article-meta__categories" href="/categories/ThreadPoolExecutor/ThreadPoolTaskExecutor/%E7%BA%BF%E7%A8%8B%E6%B1%A0/">线程池</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/ThreadPoolExecutor/">ThreadPoolExecutor</a><span class="article-meta-link">•</span><a class="article-meta__tags" href="/tags/ThreadPoolTaskExecutor/">ThreadPoolTaskExecutor</a><span class="article-meta-link">•</span><a class="article-meta__tags" href="/tags/%E7%BA%BF%E7%A8%8B%E6%B1%A0/">线程池</a></span></div><div class="content">ThreadPoolExecutor和ThreadPoolTaskExecutor
ThreadPoolExecutor简介![[Executor.png|800x500]]
这个类是JDK中的线程池类，继承自Executor， Executor 顾名思义是专门用来处理多线程相关的一个接口，所有线程相关的类都实现了这个接口，里面有一个execute()方法，用来执行线程，线程池主要提供一个线程队列，队列中保存着所有等待状态的线程。避免了创建与销毁的额外开销，提高了响应的速度。相关的继承实现类图例如ScheduledThreadPoolExecutor。
线程池接口
ExecutorService为线程池接口，提供了线程池生命周期方法，继承自Executor接口，ThreadPoolExecutor为线程池实现类，提供了线程池的维护操作等相关方法，继承自AbstractExecutorService，AbstractExecutorService实现了ExecutorService接口。
java.util.concurrent.Executor 负责线程的使用和调度的根接口123 ...</div></div></div><div class="recent-post-item"><div class="post_cover right"><a href="/2023/04/06/%E7%BA%BF%E7%A8%8B%E6%B1%A0/" title="线程池"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover8.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="线程池"></a></div><div class="recent-post-info"><a class="article-title" href="/2023/04/06/%E7%BA%BF%E7%A8%8B%E6%B1%A0/" title="线程池">线程池</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 class="post-meta-date-created" datetime="2023-04-06T03:10:00.000Z" title="发表于 2023-04-06 11:10:00">2023-04-06</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2023-04-06T03:10:00.000Z" title="更新于 2023-04-06 11:10:00">2023-04-06</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/%E7%BA%BF%E7%A8%8B%E6%B1%A0/">线程池</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/%E7%BA%BF%E7%A8%8B%E6%B1%A0/">线程池</a></span></div><div class="content">线程池
创建线程池调度线程池(ScheduledExecutorService)引入依赖
12345<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.12.0</version></dependency>
创建
123456// 需要引入commons-lang3依赖ScheduledExecutorService executorService = new ScheduledThreadPoolExecutor(1, new BasicThreadFactory .Builder() ...</div></div></div><div class="recent-post-item"><div class="post_cover left"><a href="/2022/04/01/Docker%E5%91%BD%E4%BB%A4/" title="Docker命令"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover3.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="Docker命令"></a></div><div class="recent-post-info"><a class="article-title" href="/2022/04/01/Docker%E5%91%BD%E4%BB%A4/" title="Docker命令">Docker命令</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 class="post-meta-date-created" datetime="2022-04-01T02:15:00.000Z" title="发表于 2022-04-01 10:15:00">2022-04-01</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2022-04-01T02:15:00.000Z" title="更新于 2022-04-01 10:15:00">2022-04-01</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/Docker/">Docker</a><i class="fas fa-angle-right article-meta-link"></i><a class="article-meta__categories" href="/categories/Docker/Docker%E5%91%BD%E4%BB%A4/">Docker命令</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/Docker/">Docker</a><span class="article-meta-link">•</span><a class="article-meta__tags" href="/tags/Docker%E5%91%BD%E4%BB%A4/">Docker命令</a></span></div><div class="content">Docker命令
docker top查看一个容器里面的进程信息的
docker load && docker save123456docker save可以把一个镜像保存到tar文件中，你可以这么做docker save registry:2.7.1 >registry-2.7.1.tar同时docker load可以把镜像从tar文件导入到docker中docker load < registry-2.7.1.tar
docker search这个命令可以帮助你在命令行中方便的搜索dockerhub中的镜像
docker events这个命令可以帮助你实时获取docker的各种事件信息，比如创建了一个容器什么的
docker update当你docker run 了之后却发现里面有一些参数并不是你想要的状态比如你设置的nginx容器cpu或者内存太小，这个时候你就可以使用docker update去修改这些参数
docker history当你修改了一个镜像，但是忘记了每一层的修改命令，或者你想查看一个镜像是怎么构建的时候就可以使用这个命令
doc ...</div></div></div><div class="recent-post-item"><div class="post_cover right"><a href="/2022/03/18/Git%E5%91%BD%E4%BB%A4/" title="SpringBoot - 拦截器（Interceptor）、过滤器（Filter）、监听器（Listener）及AOP"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover1.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="SpringBoot - 拦截器（Interceptor）、过滤器（Filter）、监听器（Listener）及AOP"></a></div><div class="recent-post-info"><a class="article-title" href="/2022/03/18/Git%E5%91%BD%E4%BB%A4/" title="SpringBoot - 拦截器（Interceptor）、过滤器（Filter）、监听器（Listener）及AOP">SpringBoot - 拦截器（Interceptor）、过滤器（Filter）、监听器（Listener）及AOP</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 class="post-meta-date-created" datetime="2022-03-18T13:25:00.000Z" title="发表于 2022-03-18 21:25:00">2022-03-18</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2022-03-18T13:25:00.000Z" title="更新于 2022-03-18 21:25:00">2022-03-18</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/Git/">Git</a><i class="fas fa-angle-right article-meta-link"></i><a class="article-meta__categories" href="/categories/Git/Git%E5%91%BD%E4%BB%A4/">Git命令</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/Git/">Git</a><span class="article-meta-link">•</span><a class="article-meta__tags" href="/tags/Git%E5%91%BD%E4%BB%A4/">Git命令</a></span></div><div class="content">Git常用命令
Git
Workspace：工作区
Index / Stage：暂存区
Repository：仓库区（或本地仓库）
Remote：远程仓库
新建代码库123456# 在当前目录新建一个Git代码库$ git init# 新建一个目录，将其初始化为Git代码库$ git init [project-name]# 下载一个项目和它的整个代码历史$ git clone [url]
配置Git的设置文件为.gitconfig，它可以在用户主目录下(全局配置)，也可以在项目目录下(项目配置)
1234567891011121314# 显示当前的Git配置$ git config --list# 编辑Git配置文件$ git config -e [--global]# 设置提交代码时的用户信息$ git config [--global] user.name "[name]"$ git config [--global] user.email "[email address]"# 颜色设置git config --gl ...</div></div></div><div class="recent-post-item"><div class="post_cover left"><a href="/2021/01/28/CentOS%E5%AE%89%E8%A3%85Kafka/" title="CentOS安装Kafka"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover2.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="CentOS安装Kafka"></a></div><div class="recent-post-info"><a class="article-title" href="/2021/01/28/CentOS%E5%AE%89%E8%A3%85Kafka/" title="CentOS安装Kafka">CentOS安装Kafka</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 class="post-meta-date-created" datetime="2021-01-28T08:07:24.000Z" title="发表于 2021-01-28 16:07:24">2021-01-28</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2021-01-29T08:07:24.000Z" title="更新于 2021-01-29 16:07:24">2021-01-29</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/CentOS/">CentOS</a><i class="fas fa-angle-right article-meta-link"></i><a class="article-meta__categories" href="/categories/CentOS/Kafka/">Kafka</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/CentOS/">CentOS</a><span class="article-meta-link">•</span><a class="article-meta__tags" href="/tags/Kafka/">Kafka</a></span></div><div class="content">本文主要讲CentOS7下安装Kafka集群
安装vim输入命令
1rpm -qa |grep vim
如果未出现以下安装包
vim-common-7.4.629-8.el7_9.x86_64vim-filesystem-7.4.629-8.el7_9.x86_64vim-enhanced-7.4.629-8.el7_9.x86_64vim-minimal-7.4.629-7.el7.x86_64
则使用命令，安装缺少的
123yum -y install vim-minimalyum -y vim-commonyum -y install vim-enhanced
如果都没有则使用命令
123yum -y install vim-enhanced或者yum -y install vim*
JDK安装安装openjdk
查看服务器上是否已经安装过jdk
12[root@Centos7 ~]# java -version-bash: java: 未找到命令
如果没有则搜索jdk 的yum源，执行yum安装jdk
12yum search java | grep jdkyu ...</div></div></div><div class="recent-post-item"><div class="post_cover right"><a href="/2021/01/28/IntelliJ-IDEA-%E5%B8%B8%E7%94%A8%E6%8F%92%E4%BB%B6/" title="IntelliJ IDEA 常用插件"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover9.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="IntelliJ IDEA 常用插件"></a></div><div class="recent-post-info"><a class="article-title" href="/2021/01/28/IntelliJ-IDEA-%E5%B8%B8%E7%94%A8%E6%8F%92%E4%BB%B6/" title="IntelliJ IDEA 常用插件">IntelliJ IDEA 常用插件</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 class="post-meta-date-created" datetime="2021-01-28T08:07:24.000Z" title="发表于 2021-01-28 16:07:24">2021-01-28</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2021-01-29T08:07:24.000Z" title="更新于 2021-01-29 16:07:24">2021-01-29</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/idea%E6%8F%92%E4%BB%B6/">idea插件</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/idea%E6%8F%92%E4%BB%B6/">idea插件</a></span></div><div class="content">为了使我们的开发工具IntelliJ IDEA使用的更加方便顺手，所以我推荐一些好用的插件
.ignoregit提交时过滤掉不需要提交的文件，很方便，有些本地文件是不需要提交到Git上的
activate-power-mode这是一款让你在编码的时候，整个屏幕都为之颤抖的插件
AiXcoder Code CompleterAiXcoder是一个强大的代码完成器和代码搜索引擎，基于最新的深度学习技术。 它有可能向您推荐一整套代码，这将帮助您更快地编写代码。 AiXcoder还提供了一个代码搜索引擎，以帮助您在GitHub上搜索API用例。http://localhost:8788/ 本地启动服务器。
Alibaba Java Code Guidelines阿里代码规约检测插件实现了开发手册中的的 53 条规则，大部分基于 PMD 实现，其中有 4 条规则基于 IDEA 实现，并且基于 IDEA Inspection 实现了实时检测功能。部分规则实现了 Quick Fix 功能。目前，插件检测有两种模式：实时检测、手动触发。参考详细使用文档 还有 阿里巴巴 Java 开发手册（详尽版 ...</div></div></div><div class="recent-post-item"><div class="post_cover left"><a href="/2021/01/28/MySQL%E6%95%B0%E6%8D%AE%E5%90%8C%E6%AD%A5%E5%88%B0ES7/" title="MySQL数据同步到ES7"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover10.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="MySQL数据同步到ES7"></a></div><div class="recent-post-info"><a class="article-title" href="/2021/01/28/MySQL%E6%95%B0%E6%8D%AE%E5%90%8C%E6%AD%A5%E5%88%B0ES7/" title="MySQL数据同步到ES7">MySQL数据同步到ES7</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 class="post-meta-date-created" datetime="2021-01-28T08:07:24.000Z" title="发表于 2021-01-28 16:07:24">2021-01-28</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2021-01-29T08:07:24.000Z" title="更新于 2021-01-29 16:07:24">2021-01-29</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/MySQL%E6%95%B0%E6%8D%AE%E5%90%8C%E6%AD%A5%E5%88%B0ES/">MySQL数据同步到ES</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/MySQL%E6%95%B0%E6%8D%AE%E5%90%8C%E6%AD%A5%E5%88%B0ES/">MySQL数据同步到ES</a></span></div><div class="content">本文主要讲述MySQL数据如何同步到ES7
使用go-mysql-elasticsearch开源同步工具简介参考地址
开源工具github地址
go-mysql-elasticsearch的基本原理是：如果是第一次启动该程序，首先使用mysqldump工具对源mysql数据库进行一次全量同步，通过elasticsearch client执行操作写入数据到ES；然后实现了一个mysql client,作为slave连接到源mysql，源mysql作为master会将所有数据的更新操作通过binlog event同步给slave， 通过解析binlog event就可以获取到数据的更新内容，之后写入到ES。
另外，该工具还提供了操作统计的功能，每当有数据增删改操作时，会将对应操作的计数加1，程序启动时会开启一个http服务，通过调用http接口可以查看增删改操作的次数。
使用事项
MySQL binlog必须是ROW模式；
要同步的mysql数据表必须包含主键，否则直接忽略，这是因为如果数据表没有主键，UPDATE和DELETE操作就会因为在ES中找不到对应的document而无法进 ...</div></div></div><div class="recent-post-item"><div class="post_cover right"><a href="/2021/01/28/Spring-Boot%E9%9B%86%E6%88%90Elasticsearch%EF%BC%887-x-%E7%89%88%E6%9C%AC%EF%BC%89/" title="Spring Boot集成Elasticsearch（7.x 版本）实现各种搜索（后续可以再补充）"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover6.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="Spring Boot集成Elasticsearch（7.x 版本）实现各种搜索（后续可以再补充）"></a></div><div class="recent-post-info"><a class="article-title" href="/2021/01/28/Spring-Boot%E9%9B%86%E6%88%90Elasticsearch%EF%BC%887-x-%E7%89%88%E6%9C%AC%EF%BC%89/" title="Spring Boot集成Elasticsearch（7.x 版本）实现各种搜索（后续可以再补充）">Spring Boot集成Elasticsearch（7.x 版本）实现各种搜索（后续可以再补充）</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 class="post-meta-date-created" datetime="2021-01-28T08:07:24.000Z" title="发表于 2021-01-28 16:07:24">2021-01-28</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2021-01-29T08:07:24.000Z" title="更新于 2021-01-29 16:07:24">2021-01-29</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/Elasticsearch/">Elasticsearch</a><i class="fas fa-angle-right article-meta-link"></i><a class="article-meta__categories" href="/categories/SpringBoot/">SpringBoot</a><i class="fas fa-angle-right article-meta-link"></i><a class="article-meta__categories" href="/categories/SpringBoot/Elasticsearch/">Elasticsearch</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/Elasticsearch/">Elasticsearch</a></span></div><div class="content">本文主要讲述了 Spring Boot 如何集成 ElasticSearch 搜索引擎，并使用 ElasticSearch 官方提供的 Java High Level REST Client官方文档 进行 Java 客户端操作
添加依赖在 pom.xml 文件中，添加 ElasticSearch 提供的 Java High Level REST Client 相关依赖。
1234567891011121314151617181920212223<properties> <java.version>1.8</java.version> <elasticsearch.version>7.9.2</elasticsearch.version></properties><!-- ElasticSearch High Level Client --><dependency> <groupId>org.elasticsearch.client</groupId&g ...</div></div></div><div class="recent-post-item"><div class="post_cover left"><a href="/2021/01/07/%E5%8D%95%E7%82%B9%E7%99%BB%E5%BD%95%E8%90%BD%E5%9C%B0%E5%AE%9E%E7%8E%B0%E6%8A%80%E6%9C%AF/" title="单点登录落地实现技术"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover1.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="单点登录落地实现技术"></a></div><div class="recent-post-info"><a class="article-title" href="/2021/01/07/%E5%8D%95%E7%82%B9%E7%99%BB%E5%BD%95%E8%90%BD%E5%9C%B0%E5%AE%9E%E7%8E%B0%E6%8A%80%E6%9C%AF/" title="单点登录落地实现技术">单点登录落地实现技术</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 class="post-meta-date-created" datetime="2021-01-07T13:02:30.000Z" title="发表于 2021-01-07 21:02:30">2021-01-07</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2021-01-07T13:02:30.000Z" title="更新于 2021-01-07 21:02:30">2021-01-07</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/%E5%8D%95%E7%82%B9%E7%99%BB%E9%99%86/">单点登陆</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/%E5%8D%95%E7%82%B9%E7%99%BB%E9%99%86/">单点登陆</a></span></div><div class="content">单点登录（ Single Sign-On , 简称 SSO ）是目前比较流行的服务于企业业务整合的解决方案之一， SSO 使得在多个应用系统中，用户只需要 登录一次 就可以访问所有相互信任的应用系统(一次访问，到处运行)。
单点登陆通俗的讲就是要解决如何产生和存储那个信任，以及其他系统如何验证这个信任的有效性；
单点登录的要点：1.存储信任；2.服务器生产以及验证信任；3.拿到之后服务器再次验证；
SSO原理SSO体系中的角色
User（多个）
Web应用（多个）
SSO认证中心（1个）
SSO实现模式的原则
所有的认证登录都在SSO认证中心进行；
SSO认证中心通过一些方法来告诉Web应用当前访问用户究竟是不是已通过认证的用户；
SSO 认证中心和所有的 Web 应用建立一种信任关系，也就是说 web 应用必须信任认证中心。（单点信任）
SSO主要实现方式
共享cookies
基于共享同域的cookie是Web刚开始阶段时使用的一种方式，它利用浏览同域名之间自动传递cookies机制，实现两个域名之间系统令牌 传递问题；另外，关于跨域问题，虽然 cookies本身不跨域，但可 ...</div></div></div><div class="recent-post-item"><div class="post_cover right"><a href="/2020/11/28/%E5%90%84%E4%B8%AA%E7%8E%AF%E5%A2%83%E6%90%AD%E5%BB%BAElasticsearch-7-9-2/" title="各个环境搭建Elasticsearch-7.9.2多节点配置"><img class="post-bg" src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover6.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="各个环境搭建Elasticsearch-7.9.2多节点配置"></a></div><div class="recent-post-info"><a class="article-title" href="/2020/11/28/%E5%90%84%E4%B8%AA%E7%8E%AF%E5%A2%83%E6%90%AD%E5%BB%BAElasticsearch-7-9-2/" title="各个环境搭建Elasticsearch-7.9.2多节点配置">各个环境搭建Elasticsearch-7.9.2多节点配置</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 class="post-meta-date-created" datetime="2020-11-28T01:56:40.000Z" title="发表于 2020-11-28 09:56:40">2020-11-28</time><span class="article-meta-separator">|</span><i class="fas fa-history"></i><span class="article-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2021-01-07T13:02:30.000Z" title="更新于 2021-01-07 21:02:30">2021-01-07</time></span><span class="article-meta"><span class="article-meta-separator">|</span><i class="fas fa-inbox"></i><a class="article-meta__categories" href="/categories/Elasticsearch/">Elasticsearch</a></span><span class="article-meta tags"><span class="article-meta-separator">|</span><i class="fas fa-tag"></i><a class="article-meta__tags" href="/tags/Elasticsearch/">Elasticsearch</a></span></div><div class="content">Elasticsearch 是一个分布式、RESTful 风格的搜索和数据分析引擎，能够解决不断涌现出的各种用例。 作为 Elastic Stack 的核心，它集中存储您的数据，帮助您发现意料之中以及意料之外的情况，elasticsearch官方文档。
Elasticsearch核心概念
接近实时（NRT）
Elasticsearch是一个接近实时的搜索平台。这意味着，从索引一个文档直到这个文档能够被搜索到有一个轻微的延迟（通常是1秒）。
集群（cluster）
一个集群就是由一个或多个节点组织在一起，它们共同持有你整个的数据，并一起提供索引和搜索功能。一个集群由一个唯一的名字标识，这个名字默认就是“elasticsearch”。这个名字是重要的，因为一个节点只能通过指定某个集群的名字，来加入这个集群。在产品环境中显式地设定这个名字是一个好习惯，但是使用默认值来进行测试/开发也是不错的。
节点（node）
一个节点是你集群中的一个服务器，作为集群的一部分，它存储你的数据，参与集群的索引和搜索功能。和集群类似，一个节点也是由一个名字来标识的，默认情况下，这个名字是一个随 ...</div></div></div><nav id="pagination"><div class="pagination"><span class="page-number current">1</span><a class="page-number" href="/page/2/#content-inner">2</a><a class="extend next" rel="next" href="/page/2/#content-inner"><i class="fas fa-chevron-right fa-fw"></i></a></div></nav></div><div class="aside-content" id="aside-content"><div class="card-widget card-info"><div class="is-center"><div class="avatar-img"><img src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/blog_avar_img2.jpg" onerror="this.onerror=null;this.src='/img/friend_404.gif'" alt="avatar"/></div><div class="author-info__name">xiaowo</div><div class="author-info__description">分享点滴，记录生活</div></div><div class="card-info-data site-data is-center"><a href="/archives/"><div class="headline">文章</div><div class="length-num">11</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">17</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">20</div></a></div><a id="card-info-btn" target="_blank" rel="noopener" href="https://github.com/xiaowoonly"><i class="fab fa-github"></i><span>Follow Me</span></a><div class="card-info-social-icons is-center"><a class="social-icon" href="https://github.com/xiaowoonly" target="_blank" title="Github"><i class="fab fa-github"></i></a><a class="social-icon" href="mailto:[email protected]" target="_blank" title="Email"><i class="fas fa-envelope"></i></a></div></div><div class="card-widget card-announcement"><div class="item-headline"><i class="fas fa-bullhorn fa-shake"></i><span>公告</span></div><div class="announcement_content">欢迎来到小沃的博客</div></div><div class="sticky_layout"><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas fa-history"></i><span>最新文章</span></div><div class="aside-list"><div class="aside-list-item"><a class="thumbnail" href="/2023/04/11/ThreadPoolExecutor%E5%92%8CThreadPoolTaskExecutor/" title="ThreadPoolExecutor和ThreadPoolTaskExecutor"><img src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover6.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="ThreadPoolExecutor和ThreadPoolTaskExecutor"/></a><div class="content"><a class="title" href="/2023/04/11/ThreadPoolExecutor%E5%92%8CThreadPoolTaskExecutor/" title="ThreadPoolExecutor和ThreadPoolTaskExecutor">ThreadPoolExecutor和ThreadPoolTaskExecutor</a><time datetime="2023-04-11T09:55:00.000Z" title="发表于 2023-04-11 17:55:00">2023-04-11</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/2023/04/06/%E7%BA%BF%E7%A8%8B%E6%B1%A0/" title="线程池"><img src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover8.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="线程池"/></a><div class="content"><a class="title" href="/2023/04/06/%E7%BA%BF%E7%A8%8B%E6%B1%A0/" title="线程池">线程池</a><time datetime="2023-04-06T03:10:00.000Z" title="发表于 2023-04-06 11:10:00">2023-04-06</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/2022/04/01/Docker%E5%91%BD%E4%BB%A4/" title="Docker命令"><img src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover3.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="Docker命令"/></a><div class="content"><a class="title" href="/2022/04/01/Docker%E5%91%BD%E4%BB%A4/" title="Docker命令">Docker命令</a><time datetime="2022-04-01T02:15:00.000Z" title="发表于 2022-04-01 10:15:00">2022-04-01</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/2022/03/18/Git%E5%91%BD%E4%BB%A4/" title="SpringBoot - 拦截器（Interceptor）、过滤器（Filter）、监听器（Listener）及AOP"><img src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover1.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="SpringBoot - 拦截器（Interceptor）、过滤器（Filter）、监听器（Listener）及AOP"/></a><div class="content"><a class="title" href="/2022/03/18/Git%E5%91%BD%E4%BB%A4/" title="SpringBoot - 拦截器（Interceptor）、过滤器（Filter）、监听器（Listener）及AOP">SpringBoot - 拦截器（Interceptor）、过滤器（Filter）、监听器（Listener）及AOP</a><time datetime="2022-03-18T13:25:00.000Z" title="发表于 2022-03-18 21:25:00">2022-03-18</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/2021/01/28/CentOS%E5%AE%89%E8%A3%85Kafka/" title="CentOS安装Kafka"><img src="https://pics-go-bucket.oss-cn-hongkong.aliyuncs.com/images/md/default_blog_cover2.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="CentOS安装Kafka"/></a><div class="content"><a class="title" href="/2021/01/28/CentOS%E5%AE%89%E8%A3%85Kafka/" title="CentOS安装Kafka">CentOS安装Kafka</a><time datetime="2021-01-28T08:07:24.000Z" title="发表于 2021-01-28 16:07:24">2021-01-28</time></div></div></div></div><div class="card-widget card-categories"><div class="item-headline">
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