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\"),a(\"blockquote\",[a(\"p\",[t._v(\"单向绿色箭头：\")]),t._v(\" \"),a(\"ul\",[a(\"li\",[t._v(\"前端模板 -> Controller：表示这个前端模板中有一个超链接是由这个 Controller 处理的\")]),t._v(\" \"),a(\"li\",[t._v(\"Controller -> 前端模板：表示这个 Controller 会像该前端模板传递数据或者跳转\")])]),t._v(\" \"),a(\"p\",[t._v(\"双向绿色箭头：表示 Controller 和前端模板之间进行参数的相互传递或使用\")]),t._v(\" \"),a(\"p\",[t._v(\"单向蓝色箭头： A -> B，表示 A 方法调用了 B 方法\")]),t._v(\" \"),a(\"p\",[t._v(\"单向红色箭头：数据库或缓存操作\")])]),t._v(\" \"),a(\"h3\",{attrs:{id:\"注册\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#注册\"}},[t._v(\"#\")]),t._v(\" 注册\")]),t._v(\" \"),a(\"ul\",[a(\"li\",[t._v(\"用户注册成功，将用户信息存入 MySQL，但此时该用户状态为未激活\")]),t._v(\" \"),a(\"li\",[t._v(\"向用户发送激活邮件，用户点击链接则激活账号（Spring Mail）\")])]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210204222249.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"登录-登出\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#登录-登出\"}},[t._v(\"#\")]),t._v(\" 登录 | 登出\")]),t._v(\" \"),a(\"ul\",[a(\"li\",[a(\"p\",[t._v(\"进入登录界面，动态生成验证码，并将验证码短暂存入 Redis（60 秒）\")])]),t._v(\" \"),a(\"li\",[a(\"p\",[t._v(\"用户登录成功（验证用户名、密码、验证码），生成登录凭证且设置状态为有效，并将登录凭证存入 Redis\")]),t._v(\" \"),a(\"p\",[t._v(\"注意：登录凭证存在有效期，在所有的请求执行之前，都会检查凭证是否有效和是否过期，只要该用户的凭证有效并在有效期时间内，本次请求就会一直持有该用户信息（使用 ThreadLocal 持有用户信息）\")])]),t._v(\" \"),a(\"li\",[a(\"p\",[t._v(\"勾选记住我，则延长登录凭证有效时间\")])]),t._v(\" \"),a(\"li\",[a(\"p\",[t._v(\"用户登录成功，将用户信息短暂存入 Redis（1 小时）\")])]),t._v(\" \"),a(\"li\",[a(\"p\",[t._v(\"用户登出，将凭证状态设为无效，并更新 Redis 中该用户的登录凭证信息\")])])]),t._v(\" \"),a(\"p\",[t._v(\"下图是登录模块的功能逻辑图，并没有使用 Spring Security 提供的认证逻辑（我觉得这个模块是最复杂的，这张图其实很多细节还没有画全）\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210204233233.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"分页显示所有的帖子\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#分页显示所有的帖子\"}},[t._v(\"#\")]),t._v(\" 分页显示所有的帖子\")]),t._v(\" \"),a(\"ul\",[a(\"li\",[t._v(\"支持按照 “发帖时间” 显示\")]),t._v(\" \"),a(\"li\",[t._v(\"支持按照 “热度排行” 显示（Spring Quartz）\")]),t._v(\" \"),a(\"li\",[t._v(\"将热帖列表和所有帖子的总数存入本地缓存 Caffeine（利用分布式定时任务 Spring Quartz 每隔一段时间就刷新计算帖子的热度/分数 — 见下文，而 Caffeine 里的数据更新不用我们操心，它天生就会自动的更新它拥有的数据，给它一个初始化方法就完事儿）\")])]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210204222822.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"账号设置\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#账号设置\"}},[t._v(\"#\")]),t._v(\" 账号设置\")]),t._v(\" \"),a(\"ul\",[a(\"li\",[t._v(\"修改头像（异步请求）\\n\"),a(\"ul\",[a(\"li\",[t._v(\"将用户选择的头像图片文件上传至七牛云服务器\")])])]),t._v(\" \"),a(\"li\",[t._v(\"修改密码\")])]),t._v(\" \"),a(\"p\",[t._v(\"此处只画出修改头像：\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210206121201.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"发布帖子-异步请求\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#发布帖子-异步请求\"}},[t._v(\"#\")]),t._v(\" 发布帖子（异步请求）\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210206122521.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"显示评论及相关信息\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#显示评论及相关信息\"}},[t._v(\"#\")]),t._v(\" 显示评论及相关信息\")]),t._v(\" \"),a(\"blockquote\",[a(\"p\",[t._v(\"评论部分前端的名称显示有些缺陷，有兴趣的小伙伴欢迎提 PR 解决~\")])]),t._v(\" \"),a(\"p\",[t._v(\"关于评论模块需要注意的就是评论表的设计，把握其中字段的含义，才能透彻了解这个功能的逻辑。\")]),t._v(\" \"),a(\"p\",[t._v(\"评论 Comment 的目标类型（帖子，评论） entityType 和 entityId 以及对哪个用户进行评论/回复 targetId 是由前端传递给 DiscussPostController 的\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207150925.png\",alt:\"\"}})]),t._v(\" \"),a(\"p\",[t._v(\"一个帖子的详情页需要封装的信息大概如下：\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207151328.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"添加评论-事务管理\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#添加评论-事务管理\"}},[t._v(\"#\")]),t._v(\" 添加评论（事务管理）\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207122908.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"私信列表和详情页\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#私信列表和详情页\"}},[t._v(\"#\")]),t._v(\" 私信列表和详情页\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207161130.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"发送私信-异步请求\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#发送私信-异步请求\"}},[t._v(\"#\")]),t._v(\" 发送私信（异步请求）\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207161500.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"点赞-异步请求\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#点赞-异步请求\"}},[t._v(\"#\")]),t._v(\" 点赞（异步请求）\")]),t._v(\" \"),a(\"p\",[t._v(\"将点赞相关信息存入 Redis 的数据结构 set 中。其中，key 命名为 \"),a(\"code\",[t._v(\"like:entity:entityType:entityId\")]),t._v(\"，value 即点赞用户的 id。比如 key = \"),a(\"code\",[t._v(\"like:entity:2:246\")]),t._v(\" value = \"),a(\"code\",[t._v(\"11\")]),t._v(\" 表示用户 11 对实体类型 2 即评论进行了点赞，该评论的 id 是 246\")]),t._v(\" \"),a(\"p\",[t._v(\"某个用户的获赞数量对应的存储在 Redis 中的 key 是 \"),a(\"code\",[t._v(\"like:user:userId\")]),t._v(\"，value 就是这个用户的获赞数量\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207165837.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"我的获赞数量\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#我的获赞数量\"}},[t._v(\"#\")]),t._v(\" 我的获赞数量\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207170003.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"关注-异步请求\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#关注-异步请求\"}},[t._v(\"#\")]),t._v(\" 关注（异步请求）\")]),t._v(\" \"),a(\"ul\",[a(\"li\",[t._v(\"若 A 关注了 B，则 A 是 B 的粉丝 Follower，B 是 A 的目标 Followee\")]),t._v(\" \"),a(\"li\",[t._v(\"关注的目标可以是用户、帖子、题目等，在实现时将这些目标抽象为实体（目前只做了关注用户）\")])]),t._v(\" \"),a(\"p\",[t._v(\"将某个用户关注的实体相关信息存储在 Redis 的数据结构 zset 中：key 是 \"),a(\"code\",[t._v(\"followee:userId:entityType\")]),t._v(\" ，对应的 value 是 \"),a(\"code\",[t._v(\"zset(entityId, now)\")]),t._v(\" ，以关注的时间进行排序。比如说 \"),a(\"code\",[t._v(\"followee:111:3\")]),t._v(\" 对应的value \"),a(\"code\",[t._v(\"(20, 2020-02-03-xxxx)\")]),t._v(\"，表明用户 111 关注了实体类型为 3 即人(用户)，该帖子的 id 是 20，关注该帖子的时间是 2020-02-03-xxxx\")]),t._v(\" \"),a(\"p\",[t._v(\"同样的，将某个实体拥有的粉丝相关信息也存储在 Redis 的数据结构 zset 中：key 是 \"),a(\"code\",[t._v(\"follower:entityType:entityId\")]),t._v(\"，对应的 value 是 \"),a(\"code\",[t._v(\"zset(userId, now)\")]),t._v(\"，以关注的时间进行排序\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207174046.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"关注列表\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#关注列表\"}},[t._v(\"#\")]),t._v(\" 关注列表\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207175621.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"发送系统通知\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#发送系统通知\"}},[t._v(\"#\")]),t._v(\" 发送系统通知\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210207182917.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"显示系统通知\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#显示系统通知\"}},[t._v(\"#\")]),t._v(\" 显示系统通知\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210208153059.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"搜索\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#搜索\"}},[t._v(\"#\")]),t._v(\" 搜索\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210208161936.png\",alt:\"\"}})]),t._v(\" \"),a(\"p\",[t._v(\"类似的，置顶、加精也会触发发帖事件，就不再图里面画出来了。\")]),t._v(\" \"),a(\"h3\",{attrs:{id:\"置顶加精删除-异步请求\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#置顶加精删除-异步请求\"}},[t._v(\"#\")]),t._v(\" 置顶加精删除（异步请求）\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210208171729.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"网站数据统计\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#网站数据统计\"}},[t._v(\"#\")]),t._v(\" 网站数据统计\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210208170801.png\",alt:\"\"}})]),t._v(\" \"),a(\"h3\",{attrs:{id:\"帖子热度计算\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#帖子热度计算\"}},[t._v(\"#\")]),t._v(\" 帖子热度计算\")]),t._v(\" \"),a(\"p\",[t._v(\"每次发生点赞（给帖子点赞）、评论（给帖子评论）、加精的时候，就将这些帖子信息存入缓存 Redis 中，然后通过分布式的定时任务 Spring Quartz，每隔一段时间就从缓存中取出这些帖子进行计算分数。\")]),t._v(\" \"),a(\"p\",[t._v(\"帖子分数/热度计算公式：分数（热度） = 权重 + 发帖距离天数\")]),t._v(\" \"),a(\"div\",{staticClass:\"language-java extra-class\"},[a(\"pre\",{pre:!0,attrs:{class:\"language-java\"}},[a(\"code\",[a(\"span\",{pre:!0,attrs:{class:\"token comment\"}},[t._v(\"// 计算权重\")]),t._v(\"\\n\"),a(\"span\",{pre:!0,attrs:{class:\"token keyword\"}},[t._v(\"double\")]),t._v(\" w \"),a(\"span\",{pre:!0,attrs:{class:\"token operator\"}},[t._v(\"=\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token punctuation\"}},[t._v(\"(\")]),t._v(\"wonderful \"),a(\"span\",{pre:!0,attrs:{class:\"token operator\"}},[t._v(\"?\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token number\"}},[t._v(\"75\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token operator\"}},[t._v(\":\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token number\"}},[t._v(\"0\")]),a(\"span\",{pre:!0,attrs:{class:\"token punctuation\"}},[t._v(\")\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token operator\"}},[t._v(\"+\")]),t._v(\" commentCount \"),a(\"span\",{pre:!0,attrs:{class:\"token operator\"}},[t._v(\"*\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token number\"}},[t._v(\"10\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token operator\"}},[t._v(\"+\")]),t._v(\" likeCount \"),a(\"span\",{pre:!0,attrs:{class:\"token operator\"}},[t._v(\"*\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token number\"}},[t._v(\"2\")]),a(\"span\",{pre:!0,attrs:{class:\"token punctuation\"}},[t._v(\";\")]),t._v(\"\\n\"),a(\"span\",{pre:!0,attrs:{class:\"token comment\"}},[t._v(\"// 分数 = 权重 + 发帖距离天数\")]),t._v(\"\\n\"),a(\"span\",{pre:!0,attrs:{class:\"token keyword\"}},[t._v(\"double\")]),t._v(\" score \"),a(\"span\",{pre:!0,attrs:{class:\"token operator\"}},[t._v(\"=\")]),t._v(\" \"),a(\"span\",{pre:!0,attrs:{class:\"token class-name\"}},[t._v(\"Math\")]),a(\"span\",{pre:!0,attrs:{class:\"token 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🌌 理想的部署架构\")]),t._v(\" \"),a(\"p\",[t._v(\"我只部署了一台服务器，以下是理想的部署架构：\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210206215827.png\",alt:\"\"}})]),t._v(\" \"),a(\"h2\",{attrs:{id:\"📖-常见面试题\"}},[a(\"a\",{staticClass:\"header-anchor\",attrs:{href:\"#📖-常见面试题\"}},[t._v(\"#\")]),t._v(\" 📖 常见面试题\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210208221333.png\",alt:\"\"}})]),t._v(\" \"),a(\"p\",[t._v(\"有意愿拿着这个项目去面试（校招/社招）的小伙伴，可以扫描下方二维码关注公众号**『飞天小牛肉』**，获取我整理的关于本项目涉及的常见面试题及解析（尚在更新中）\")]),t._v(\" \"),a(\"p\",[a(\"img\",{attrs:{src:\"https://gitee.com/veal98/images/raw/master/img/20210206220907.png\",alt:\"\"}})])])}),[],!1,null,null,null);s.default=e.exports}}]);","extractedComments":[]} |