sanbuphy
1000 lines
23 KiB
Vue
1000 lines
23 KiB
Vue
<!--
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CacheProblemsDemo.vue
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缓存三大问题演示 - 缓存穿透、缓存击穿、缓存雪崩
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-->
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<template>
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<div class="cache-problems-demo">
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<div class="header">
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<div class="title">缓存的三大问题</div>
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<div class="subtitle">穿透、击穿、雪崩的场景与解决方案</div>
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</div>
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<div class="problem-selector">
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<button
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v-for="problem in problems"
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:key="problem.id"
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class="problem-btn"
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:class="{ active: activeProblem === problem.id }"
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@click="activeProblem = problem.id"
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>
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<span class="problem-icon">{{ problem.icon }}</span>
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<span class="problem-name">{{ problem.name }}</span>
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</button>
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</div>
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<div class="problem-content">
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<!-- 缓存穿透 -->
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<div v-if="activeProblem === 'penetration'" class="problem-detail">
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<div class="problem-intro">
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<div class="intro-title">什么是缓存穿透？</div>
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<div class="intro-text">
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查询一个<strong>不存在的数据</strong>（如恶意请求
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id=-1），缓存没有，数据库也没有。 导致每次请求都直接打到数据库。
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</div>
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</div>
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<div class="problem-scenario">
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<div class="scenario-title">场景模拟</div>
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<div class="scenario-diagram">
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<div class="flow-item request">
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<div class="flow-icon">🔥</div>
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<div class="flow-text">请求 id=-999</div>
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</div>
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<div class="flow-arrow">↓</div>
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<div class="flow-item cache" :class="{ miss: true }">
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<div class="flow-icon">❌</div>
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<div class="flow-text">缓存未命中</div>
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</div>
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<div class="flow-arrow">↓</div>
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<div
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class="flow-item database"
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:class="{ overloaded: dbPressure >= 80 }"
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>
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<div class="flow-icon">🗄️</div>
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<div class="flow-text">数据库查询（不存在）</div>
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</div>
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</div>
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<div class="controls">
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<button
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class="attack-btn"
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@click="simulatePenetration"
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:disabled="simulating"
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>
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{{ simulating ? '攻击中...' : '模拟恶意攻击' }}
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</button>
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</div>
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<div class="pressure-meter">
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<div class="meter-label">数据库压力</div>
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<div class="meter-bar">
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<div
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class="meter-fill"
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:style="{ width: dbPressure + '%' }"
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></div>
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</div>
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<div class="meter-value">{{ dbPressure }}%</div>
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</div>
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</div>
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<div class="solutions">
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<div class="solutions-title">解决方案</div>
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<div class="solution-list">
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<div class="solution-item">
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<div class="solution-header">
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<span class="solution-number">1</span>
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<span class="solution-name">布隆过滤器 (Bloom Filter)</span>
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</div>
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<div class="solution-desc">
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在缓存前加一层过滤器，快速判断"这个 id 肯定不存在"。
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<br />
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<span class="note">100% 判断不存在，但可能有误判</span>
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</div>
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</div>
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<div class="solution-item">
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<div class="solution-header">
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<span class="solution-number">2</span>
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<span class="solution-name">缓存空对象</span>
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</div>
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<div class="solution-desc">
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查询不存在时，缓存一个 NULL 值（TTL 设置短一点，如 5 分钟）。
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</div>
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</div>
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</div>
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</div>
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</div>
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<!-- 缓存击穿 -->
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<div v-if="activeProblem === 'breakdown'" class="problem-detail">
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<div class="problem-intro">
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<div class="intro-title">什么是缓存击穿？</div>
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<div class="intro-text">
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某个<strong>热点数据</strong>过期（如微博热搜），瞬间几百万请求同时打到数据库。
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</div>
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</div>
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<div class="problem-scenario">
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<div class="scenario-title">场景模拟</div>
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<div class="hotkey-scenario">
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<div class="hotkey-badge">
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🔥 热点数据
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<br />
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<span class="key">user:12345</span>
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</div>
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<div class="concurrent-requests">
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<div class="requests-title">并发请求</div>
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<div class="requests-container">
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<div
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v-for="(req, index) in concurrentRequests"
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:key="index"
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class="request-item"
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:class="req.status"
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>
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<div class="request-id">请求 {{ req.id }}</div>
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<div class="request-status">{{ req.statusText }}</div>
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</div>
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</div>
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</div>
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<div class="mutex-visual" v-if="showMutex">
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<div class="mutex-badge">🔒 互斥锁</div>
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<div class="mutex-text">只有一个线程能查数据库</div>
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</div>
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</div>
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<div class="controls">
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<button
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class="attack-btn"
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@click="simulateBreakdown"
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:disabled="simulating"
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>
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{{ simulating ? '模拟中...' : '模拟热点过期' }}
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</button>
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</div>
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</div>
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<div class="solutions">
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<div class="solutions-title">解决方案</div>
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<div class="solution-list">
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<div class="solution-item">
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<div class="solution-header">
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<span class="solution-number">1</span>
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<span class="solution-name">互斥锁 (Mutex Lock)</span>
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</div>
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<div class="solution-desc">
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只允许一个线程查数据库，其他线程等待。
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<br />
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<span class="note">优点：简单；缺点：阻塞其他请求</span>
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</div>
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</div>
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<div class="solution-item">
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<div class="solution-header">
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<span class="solution-number">2</span>
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<span class="solution-name">逻辑过期 (Logical Expiration)</span>
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</div>
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<div class="solution-desc">
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不设置 TTL，而是在 value 里存一个过期时间字段。
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<br />
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<span class="note"
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>查询时发现"逻辑过期"，异步更新缓存，同时返回旧数据</span
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>
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</div>
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</div>
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</div>
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</div>
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</div>
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<!-- 缓存雪崩 -->
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<div v-if="activeProblem === 'avalanche'" class="problem-detail">
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<div class="problem-intro">
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<div class="intro-title">什么是缓存雪崩？</div>
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<div class="intro-text">
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大量缓存<strong>同时过期</strong>（如系统重启后，所有缓存都在
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00:00:00 过期）， 数据库瞬间被打爆。
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</div>
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</div>
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<div class="problem-scenario">
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<div class="scenario-title">场景模拟</div>
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<div class="avalanche-visual">
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<div class="cache-items">
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<div
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v-for="(item, index) in cacheItems"
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:key="index"
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class="cache-item"
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:class="{ expired: item.expired }"
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>
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<div class="item-key">{{ item.key }}</div>
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<div class="item-ttl">TTL: {{ item.ttl }}s</div>
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</div>
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</div>
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<div class="mass-explosion" v-if="massExplosion">
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<div class="explosion-icon">💥</div>
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<div class="explosion-text">同时过期！</div>
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</div>
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<div class="db-overload" :class="{ critical: dbPressure >= 90 }">
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<div class="db-icon">🗄️</div>
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<div class="db-status">数据库负载: {{ dbPressure }}%</div>
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</div>
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</div>
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<div class="controls">
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<button
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class="attack-btn"
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@click="simulateAvalanche"
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:disabled="simulating"
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>
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{{ simulating ? '模拟中...' : '模拟缓存雪崩' }}
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</button>
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<button class="solution-btn" @click="applyRandomTTL">
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应用解决方案（随机 TTL）
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</button>
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</div>
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</div>
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<div class="solutions">
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<div class="solutions-title">解决方案</div>
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<div class="solution-list">
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<div class="solution-item">
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<div class="solution-header">
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<span class="solution-number">1</span>
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<span class="solution-name">随机 TTL</span>
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</div>
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<div class="solution-desc">
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避免同时过期，TTL 加上随机值。
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<br />
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<span class="code"
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>ttl = 600 + random.randint(-60, 60) # 600 ± 60 秒</span
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>
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</div>
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</div>
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<div class="solution-item">
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<div class="solution-header">
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<span class="solution-number">2</span>
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<span class="solution-name">缓存预热</span>
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</div>
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<div class="solution-desc">
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系统启动时，主动加载热点数据到缓存。
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<br />
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<span class="note"
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>使用定时任务，提前刷新即将过期的热点数据</span
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>
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</div>
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</div>
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<div class="solution-item">
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<div class="solution-header">
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<span class="solution-number">3</span>
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<span class="solution-name">熔断降级</span>
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</div>
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<div class="solution-desc">
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当数据库压力过大时，暂时停止更新缓存，直接返回降级数据。
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<br />
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<span class="note">如"系统繁忙，请稍后再试"</span>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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<div class="comparison-table">
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<div class="table-title">三大问题对比</div>
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<table class="problems-table">
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<thead>
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<tr>
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<th>问题</th>
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<th>原因</th>
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<th>影响</th>
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<th>主要解决方案</th>
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</tr>
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</thead>
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<tbody>
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<tr :class="{ active: activeProblem === 'penetration' }">
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<td>缓存穿透</td>
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<td>查询不存在的数据</td>
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<td>数据库压力增加</td>
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<td>布隆过滤器、缓存空对象</td>
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</tr>
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<tr :class="{ active: activeProblem === 'breakdown' }">
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<td>缓存击穿</td>
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<td>热点数据过期</td>
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<td>数据库瞬间压力</td>
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<td>互斥锁、逻辑过期</td>
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</tr>
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<tr :class="{ active: activeProblem === 'avalanche' }">
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<td>缓存雪崩</td>
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<td>大量缓存同时过期</td>
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<td>数据库被打爆</td>
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<td>随机 TTL、缓存预热</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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</template>
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<script setup>
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import { ref } from 'vue'
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const activeProblem = ref('penetration')
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const simulating = ref(false)
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const dbPressure = ref(0)
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const concurrentRequests = ref([])
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const showMutex = ref(false)
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const cacheItems = ref([])
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const massExplosion = ref(false)
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const problems = [
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{ id: 'penetration', name: '缓存穿透', icon: '🕳️' },
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{ id: 'breakdown', name: '缓存击穿', icon: '🔥' },
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{ id: 'avalanche', name: '缓存雪崩', icon: '❄️' }
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]
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const initializeCacheItems = () => {
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cacheItems.value = Array.from({ length: 8 }, (_, i) => ({
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key: `key:${i + 1}`,
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ttl: 10,
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expired: false
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}))
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}
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const simulatePenetration = async () => {
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simulating.value = true
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dbPressure.value = 0
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for (let i = 0; i < 20; i++) {
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await new Promise((resolve) => setTimeout(resolve, 100))
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dbPressure.value = Math.min(100, dbPressure.value + 5)
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}
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setTimeout(() => {
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simulating.value = false
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dbPressure.value = 0
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}, 2000)
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}
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const simulateBreakdown = async () => {
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simulating.value = true
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concurrentRequests.value = Array.from({ length: 10 }, (_, i) => ({
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id: i + 1,
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status: 'waiting',
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statusText: '等待中'
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}))
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showMutex.value = true
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// First request gets the lock
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await new Promise((resolve) => setTimeout(resolve, 300))
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concurrentRequests.value[0].status = 'processing'
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concurrentRequests.value[0].statusText = '查询数据库...'
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await new Promise((resolve) => setTimeout(resolve, 1000))
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concurrentRequests.value[0].status = 'done'
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concurrentRequests.value[0].statusText = '✅ 完成'
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// Other requests wait and get from cache
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for (let i = 1; i < concurrentRequests.value.length; i++) {
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await new Promise((resolve) => setTimeout(resolve, 200))
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concurrentRequests.value[i].status = 'done'
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concurrentRequests.value[i].statusText = '✅ 从缓存获取'
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}
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showMutex.value = false
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setTimeout(() => {
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simulating.value = false
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}, 1500)
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}
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const simulateAvalanche = async () => {
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simulating.value = true
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dbPressure.value = 0
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massExplosion.value = false
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initializeCacheItems()
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// Countdown to expiration
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for (let i = 10; i > 0; i--) {
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await new Promise((resolve) => setTimeout(resolve, 200))
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cacheItems.value.forEach((item) => {
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item.ttl = i
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})
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}
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// Mass expiration
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massExplosion.value = true
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cacheItems.value.forEach((item) => {
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item.expired = true
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})
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// Database pressure spike
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for (let i = 0; i < 20; i++) {
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await new Promise((resolve) => setTimeout(resolve, 100))
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dbPressure.value = Math.min(100, dbPressure.value + 5)
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}
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setTimeout(() => {
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massExplosion.value = false
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simulating.value = false
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}, 2000)
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}
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const applyRandomTTL = async () => {
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simulating.value = true
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dbPressure.value = 0
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massExplosion.value = false
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initializeCacheItems()
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// Apply random TTL
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cacheItems.value.forEach((item) => {
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item.ttl = 10 + Math.floor(Math.random() * 10) - 5
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})
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// Gradual expiration
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const maxTTL = Math.max(...cacheItems.value.map((item) => item.ttl))
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for (let t = maxTTL; t > 0; t--) {
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await new Promise((resolve) => setTimeout(resolve, 300))
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cacheItems.value.forEach((item) => {
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if (item.ttl > 0) {
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item.ttl--
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if (item.ttl === 0) {
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item.expired = true
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}
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}
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})
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const expiredCount = cacheItems.value.filter((item) => item.expired).length
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dbPressure.value = Math.min(50, expiredCount * 8)
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}
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setTimeout(() => {
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simulating.value = false
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}, 1500)
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}
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initializeCacheItems()
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</script>
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<style scoped>
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.cache-problems-demo {
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border: 1px solid var(--vp-c-divider);
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background: var(--vp-c-bg-soft);
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border-radius: 12px;
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padding: 1.5rem;
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margin: 1.5rem 0;
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font-family: var(--vp-font-family-base);
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}
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.header {
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margin-bottom: 1.5rem;
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}
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.title {
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font-weight: 700;
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font-size: 1.1rem;
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}
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.subtitle {
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color: var(--vp-c-text-2);
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font-size: 0.9rem;
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}
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.problem-selector {
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display: flex;
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gap: 0.75rem;
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margin-bottom: 2rem;
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flex-wrap: wrap;
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}
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.problem-btn {
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flex: 1;
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min-width: 150px;
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padding: 1rem;
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background: var(--vp-c-bg);
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border: 2px solid var(--vp-c-divider);
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border-radius: 10px;
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cursor: pointer;
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font-weight: 600;
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transition: all 0.2s;
|
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display: flex;
|
||
flex-direction: column;
|
||
align-items: center;
|
||
gap: 0.5rem;
|
||
}
|
||
|
||
.problem-btn.active {
|
||
background: var(--vp-c-brand);
|
||
color: white;
|
||
border-color: var(--vp-c-brand);
|
||
}
|
||
|
||
.problem-icon {
|
||
font-size: 2rem;
|
||
}
|
||
|
||
.problem-name {
|
||
font-size: 0.95rem;
|
||
}
|
||
|
||
.problem-content {
|
||
min-height: 500px;
|
||
}
|
||
|
||
.problem-detail {
|
||
display: flex;
|
||
flex-direction: column;
|
||
gap: 2rem;
|
||
}
|
||
|
||
.problem-intro {
|
||
background: var(--vp-c-bg);
|
||
padding: 1.5rem;
|
||
border-radius: 10px;
|
||
border: 1px solid var(--vp-c-divider);
|
||
}
|
||
|
||
.intro-title {
|
||
font-size: 1.2rem;
|
||
font-weight: 700;
|
||
margin-bottom: 0.75rem;
|
||
}
|
||
|
||
.intro-text {
|
||
font-size: 0.95rem;
|
||
line-height: 1.6;
|
||
color: var(--vp-c-text-1);
|
||
}
|
||
|
||
.problem-scenario {
|
||
background: var(--vp-c-bg);
|
||
padding: 1.5rem;
|
||
border-radius: 10px;
|
||
border: 1px solid var(--vp-c-divider);
|
||
}
|
||
|
||
.scenario-title {
|
||
font-weight: 600;
|
||
margin-bottom: 1rem;
|
||
font-size: 0.95rem;
|
||
}
|
||
|
||
.scenario-diagram {
|
||
display: flex;
|
||
flex-direction: column;
|
||
align-items: center;
|
||
gap: 0.5rem;
|
||
margin-bottom: 1.5rem;
|
||
}
|
||
|
||
.flow-item {
|
||
display: flex;
|
||
align-items: center;
|
||
gap: 0.75rem;
|
||
padding: 0.75rem 1.5rem;
|
||
background: var(--vp-c-bg-soft);
|
||
border-radius: 8px;
|
||
border: 2px solid var(--vp-c-divider);
|
||
min-width: 250px;
|
||
justify-content: center;
|
||
}
|
||
|
||
.flow-item.cache.miss {
|
||
border-color: #ef4444;
|
||
background: #fef2f2;
|
||
}
|
||
|
||
.flow-item.database.overloaded {
|
||
border-color: #ef4444;
|
||
background: #fef2f2;
|
||
animation: pulse 1s infinite;
|
||
}
|
||
|
||
.flow-icon {
|
||
font-size: 1.5rem;
|
||
}
|
||
|
||
.flow-text {
|
||
font-weight: 600;
|
||
font-size: 0.9rem;
|
||
}
|
||
|
||
.flow-arrow {
|
||
font-size: 1.5rem;
|
||
color: var(--vp-c-text-2);
|
||
}
|
||
|
||
.controls {
|
||
display: flex;
|
||
gap: 1rem;
|
||
justify-content: center;
|
||
margin: 1.5rem 0;
|
||
flex-wrap: wrap;
|
||
}
|
||
|
||
.attack-btn {
|
||
padding: 0.75rem 1.5rem;
|
||
background: #ef4444;
|
||
color: white;
|
||
border: none;
|
||
border-radius: 8px;
|
||
cursor: pointer;
|
||
font-weight: 600;
|
||
transition: all 0.2s;
|
||
}
|
||
|
||
.attack-btn:hover:not(:disabled) {
|
||
transform: translateY(-2px);
|
||
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
|
||
}
|
||
|
||
.solution-btn {
|
||
padding: 0.75rem 1.5rem;
|
||
background: #22c55e;
|
||
color: white;
|
||
border: none;
|
||
border-radius: 8px;
|
||
cursor: pointer;
|
||
font-weight: 600;
|
||
transition: all 0.2s;
|
||
}
|
||
|
||
.pressure-meter {
|
||
margin-top: 1rem;
|
||
}
|
||
|
||
.meter-label {
|
||
font-size: 0.85rem;
|
||
margin-bottom: 0.5rem;
|
||
font-weight: 600;
|
||
}
|
||
|
||
.meter-bar {
|
||
height: 20px;
|
||
background: var(--vp-c-bg);
|
||
border-radius: 999px;
|
||
overflow: hidden;
|
||
border: 1px solid var(--vp-c-divider);
|
||
}
|
||
|
||
.meter-fill {
|
||
height: 100%;
|
||
background: linear-gradient(90deg, #22c55e, #f59e0b, #ef4444);
|
||
transition: width 0.3s;
|
||
}
|
||
|
||
.meter-value {
|
||
text-align: center;
|
||
margin-top: 0.5rem;
|
||
font-size: 1.2rem;
|
||
font-weight: 700;
|
||
}
|
||
|
||
.hotkey-scenario {
|
||
display: flex;
|
||
flex-direction: column;
|
||
gap: 1.5rem;
|
||
margin-bottom: 1.5rem;
|
||
}
|
||
|
||
.hotkey-badge {
|
||
text-align: center;
|
||
padding: 1rem;
|
||
background: #fef3c7;
|
||
border-radius: 8px;
|
||
border: 2px solid #f59e0b;
|
||
font-weight: 600;
|
||
}
|
||
|
||
.key {
|
||
display: block;
|
||
margin-top: 0.5rem;
|
||
font-size: 0.9rem;
|
||
color: #92400e;
|
||
}
|
||
|
||
.concurrent-requests {
|
||
background: var(--vp-c-bg-soft);
|
||
padding: 1rem;
|
||
border-radius: 8px;
|
||
}
|
||
|
||
.requests-title {
|
||
font-weight: 600;
|
||
margin-bottom: 0.75rem;
|
||
font-size: 0.9rem;
|
||
}
|
||
|
||
.requests-container {
|
||
display: grid;
|
||
grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
|
||
gap: 0.5rem;
|
||
}
|
||
|
||
.request-item {
|
||
padding: 0.5rem;
|
||
background: var(--vp-c-bg);
|
||
border-radius: 6px;
|
||
border: 1px solid var(--vp-c-divider);
|
||
text-align: center;
|
||
font-size: 0.75rem;
|
||
}
|
||
|
||
.request-item.waiting {
|
||
border-color: #94a3b8;
|
||
}
|
||
|
||
.request-item.processing {
|
||
border-color: #f59e0b;
|
||
background: #fef3c7;
|
||
animation: pulse 1s infinite;
|
||
}
|
||
|
||
.request-item.done {
|
||
border-color: #22c55e;
|
||
background: #f0fdf4;
|
||
}
|
||
|
||
.request-id {
|
||
font-weight: 600;
|
||
margin-bottom: 0.25rem;
|
||
}
|
||
|
||
.request-status {
|
||
color: var(--vp-c-text-2);
|
||
}
|
||
|
||
.mutex-visual {
|
||
text-align: center;
|
||
padding: 1rem;
|
||
background: #eff6ff;
|
||
border-radius: 8px;
|
||
border: 2px solid #3b82f6;
|
||
}
|
||
|
||
.mutex-badge {
|
||
font-size: 1.5rem;
|
||
font-weight: 700;
|
||
margin-bottom: 0.5rem;
|
||
}
|
||
|
||
.mutex-text {
|
||
font-size: 0.9rem;
|
||
color: #1e40af;
|
||
}
|
||
|
||
.avalanche-visual {
|
||
display: flex;
|
||
flex-direction: column;
|
||
gap: 1rem;
|
||
margin-bottom: 1.5rem;
|
||
}
|
||
|
||
.cache-items {
|
||
display: grid;
|
||
grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
|
||
gap: 0.5rem;
|
||
}
|
||
|
||
.cache-item {
|
||
padding: 0.5rem;
|
||
background: #f0fdf4;
|
||
border-radius: 6px;
|
||
border: 2px solid #22c55e;
|
||
text-align: center;
|
||
transition: all 0.3s;
|
||
}
|
||
|
||
.cache-item.expired {
|
||
background: #fef2f2;
|
||
border-color: #ef4444;
|
||
animation: shake 0.5s;
|
||
}
|
||
|
||
.item-key {
|
||
font-weight: 600;
|
||
font-size: 0.8rem;
|
||
margin-bottom: 0.25rem;
|
||
}
|
||
|
||
.item-ttl {
|
||
font-size: 0.75rem;
|
||
color: var(--vp-c-text-2);
|
||
}
|
||
|
||
.mass-explosion {
|
||
text-align: center;
|
||
padding: 1rem;
|
||
background: #fef2f2;
|
||
border-radius: 8px;
|
||
border: 2px solid #ef4444;
|
||
}
|
||
|
||
.explosion-icon {
|
||
font-size: 3rem;
|
||
margin-bottom: 0.5rem;
|
||
}
|
||
|
||
.explosion-text {
|
||
font-size: 1.2rem;
|
||
font-weight: 700;
|
||
color: #dc2626;
|
||
}
|
||
|
||
.db-overload {
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
gap: 1rem;
|
||
padding: 1rem;
|
||
background: var(--vp-c-bg-soft);
|
||
border-radius: 8px;
|
||
border: 2px solid var(--vp-c-divider);
|
||
transition: all 0.3s;
|
||
}
|
||
|
||
.db-overload.critical {
|
||
border-color: #ef4444;
|
||
background: #fef2f2;
|
||
animation: pulse 1s infinite;
|
||
}
|
||
|
||
.db-icon {
|
||
font-size: 2rem;
|
||
}
|
||
|
||
.db-status {
|
||
font-weight: 600;
|
||
font-size: 1rem;
|
||
}
|
||
|
||
.solutions {
|
||
background: var(--vp-c-bg);
|
||
padding: 1.5rem;
|
||
border-radius: 10px;
|
||
border: 1px solid var(--vp-c-divider);
|
||
}
|
||
|
||
.solutions-title {
|
||
font-weight: 600;
|
||
margin-bottom: 1rem;
|
||
font-size: 0.95rem;
|
||
}
|
||
|
||
.solution-list {
|
||
display: flex;
|
||
flex-direction: column;
|
||
gap: 1rem;
|
||
}
|
||
|
||
.solution-item {
|
||
padding: 1rem;
|
||
background: var(--vp-c-bg-soft);
|
||
border-radius: 8px;
|
||
border-left: 4px solid var(--vp-c-brand);
|
||
}
|
||
|
||
.solution-header {
|
||
display: flex;
|
||
align-items: center;
|
||
gap: 0.75rem;
|
||
margin-bottom: 0.5rem;
|
||
}
|
||
|
||
.solution-number {
|
||
width: 30px;
|
||
height: 30px;
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
background: var(--vp-c-brand);
|
||
color: white;
|
||
border-radius: 50%;
|
||
font-weight: 700;
|
||
font-size: 0.9rem;
|
||
}
|
||
|
||
.solution-name {
|
||
font-weight: 600;
|
||
font-size: 0.95rem;
|
||
}
|
||
|
||
.solution-desc {
|
||
font-size: 0.85rem;
|
||
line-height: 1.6;
|
||
color: var(--vp-c-text-1);
|
||
padding-left: 2.5rem;
|
||
}
|
||
|
||
.note {
|
||
display: block;
|
||
margin-top: 0.5rem;
|
||
color: var(--vp-c-text-2);
|
||
font-size: 0.8rem;
|
||
}
|
||
|
||
.code {
|
||
display: block;
|
||
margin-top: 0.5rem;
|
||
padding: 0.5rem;
|
||
background: #1e293b;
|
||
color: #e2e8f0;
|
||
border-radius: 4px;
|
||
font-family: monospace;
|
||
font-size: 0.8rem;
|
||
}
|
||
|
||
.comparison-table {
|
||
background: var(--vp-c-bg);
|
||
padding: 1.5rem;
|
||
border-radius: 10px;
|
||
border: 1px solid var(--vp-c-divider);
|
||
}
|
||
|
||
.table-title {
|
||
font-weight: 600;
|
||
margin-bottom: 1rem;
|
||
font-size: 0.95rem;
|
||
}
|
||
|
||
.problems-table {
|
||
width: 100%;
|
||
border-collapse: collapse;
|
||
}
|
||
|
||
.problems-table th,
|
||
.problems-table td {
|
||
padding: 0.75rem;
|
||
text-align: left;
|
||
border: 1px solid var(--vp-c-divider);
|
||
}
|
||
|
||
.problems-table th {
|
||
background: var(--vp-c-bg-soft);
|
||
font-weight: 600;
|
||
font-size: 0.85rem;
|
||
}
|
||
|
||
.problems-table td {
|
||
font-size: 0.85rem;
|
||
}
|
||
|
||
.problems-table tr.active {
|
||
background: #eff6ff;
|
||
border-left: 3px solid var(--vp-c-brand);
|
||
}
|
||
|
||
.problems-table tr.active td {
|
||
border-top-color: var(--vp-c-brand);
|
||
border-bottom-color: var(--vp-c-brand);
|
||
}
|
||
|
||
@keyframes pulse {
|
||
0%,
|
||
100% {
|
||
opacity: 1;
|
||
}
|
||
50% {
|
||
opacity: 0.6;
|
||
}
|
||
}
|
||
|
||
@keyframes shake {
|
||
0%,
|
||
100% {
|
||
transform: translateX(0);
|
||
}
|
||
25% {
|
||
transform: translateX(-5px);
|
||
}
|
||
75% {
|
||
transform: translateX(5px);
|
||
}
|
||
}
|
||
</style>
|