sanbuphy
d174ceea32
- Add new interactive components for frontend routing, browser rendering pipeline, and database transactions - Improve existing demos with better visuals, explanations, and examples - Update documentation structure and content for better clarity - Add new utility scripts and update package.json with new commands - Fix formatting and alignment in documentation tables
466 lines
10 KiB
Vue
466 lines
10 KiB
Vue
<script setup>
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import { ref, computed } from 'vue'
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const algorithm = ref('round-robin')
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const totalRequests = ref(0)
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const servers = ref([
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{ id: 1, name: '服务器 1', requests: 0, status: 'healthy' },
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{ id: 2, name: '服务器 2', requests: 0, status: 'healthy' },
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{ id: 3, name: '服务器 3', requests: 0, status: 'healthy' }
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])
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const algorithms = [
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{ id: 'round-robin', name: '轮询 (Round Robin)', desc: '依次分配，像排队发号' },
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{ id: 'least-connections', name: '最少连接 (Least Connections)', desc: '谁最空闲分配给谁' },
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{ id: 'ip-hash', name: 'IP 哈希 (IP Hash)', desc: '同一IP总是分配给同一服务器' }
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]
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const currentAlgorithm = computed(() => {
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return algorithms.find(a => a.id === algorithm.value)
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})
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let requestIndex = 0
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const sendRequest = () => {
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totalRequests.value++
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requestIndex++
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let serverIndex = 0
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if (algorithm.value === 'round-robin') {
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serverIndex = (totalRequests.value - 1) % servers.value.length
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} else if (algorithm.value === 'least-connections') {
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const minRequests = Math.min(...servers.value.map(s => s.requests))
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serverIndex = servers.value.findIndex(s => s.requests === minRequests)
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} else if (algorithm.value === 'ip-hash') {
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const mockIp = `192.168.1.${(requestIndex % 10) + 1}`
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serverIndex = parseInt(mockIp.split('.')[3]) % servers.value.length
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}
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servers.value[serverIndex].requests++
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}
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// Auto simulate
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setInterval(() => {
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sendRequest()
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}, 1500)
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</script>
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<template>
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<div class="deployment-lb">
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<div class="demo-header">
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<h3>负载均衡演示</h3>
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<p class="subtitle">多店协同，分散客流</p>
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</div>
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<div class="intro-text">
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<p>
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就像小明开了三家咖啡店，<strong>引导员</strong>根据不同策略把顾客分流到不同门店，
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避免单店过载，提高整体服务能力。负载均衡器就是那个"引导员"。
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</p>
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</div>
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<div class="demo-content">
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<!-- 算法选择 -->
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<div class="algorithm-section">
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<div class="section-title">🎯 负载均衡算法</div>
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<div class="algorithm-list">
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<div
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v-for="algo in algorithms"
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:key="algo.id"
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class="algorithm-item"
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:class="{ active: algorithm === algo.id }"
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@click="algorithm = algo.id"
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>
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<div class="algo-header">
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<span class="algo-icon">{{ algorithm === algo.id ? '✓' : '○' }}</span>
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<span class="algo-name">{{ algo.name }}</span>
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</div>
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<div class="algo-desc">{{ algo.desc }}</div>
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</div>
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</div>
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</div>
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<!-- 负载均衡器可视化 -->
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<div class="lb-visualization">
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<div class="lb-node">
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<div class="lb-icon">⚖️</div>
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<div class="lb-title">负载均衡器</div>
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<div class="lb-algorithm">{{ currentAlgorithm.name }}</div>
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<div class="lb-stats">{{ totalRequests }} 次请求</div>
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</div>
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<div class="lb-arrows">
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<div
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v-for="i in 3"
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:key="i"
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class="arrow-line"
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:style="{ animationDelay: `${i * 0.2}s` }"
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>
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→
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</div>
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</div>
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<div class="servers-grid">
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<div
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v-for="(server, idx) in servers"
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:key="server.id"
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class="server-card"
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:class="{ highlighted: server.requests > 0 }"
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>
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<div class="server-icon">🖥️</div>
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<div class="server-name">{{ server.name }}</div>
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<div class="server-status">
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<span class="status-dot healthy"></span>
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<span class="status-text">健康</span>
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</div>
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<div class="server-metrics">
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<div class="metric-item">
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<span class="metric-label">请求数</span>
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<span class="metric-value">{{ server.requests }}</span>
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</div>
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<div class="metric-item">
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<span class="metric-label">负载</span>
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<div class="load-bar">
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<div
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class="load-fill"
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:style="{ width: `${Math.min(server.requests * 5, 100)}%` }"
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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>
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<!-- 生活类比 -->
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<div class="analogy-box">
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<div class="analogy-title">💡 生活类比</div>
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<div class="analogy-content">
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<div v-if="algorithm === 'round-robin'" class="analogy-item">
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<strong>轮询</strong>：就像三家咖啡店轮流接待，A店、B店、C店、A店、B店、C店...公平分配。
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</div>
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<div v-if="algorithm === 'least-connections'" class="analogy-item">
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<strong>最少连接</strong>：就像引导员看哪家店人少就往哪家导，确保每家都不会太忙。
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</div>
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<div v-if="algorithm === 'ip-hash'" class="analogy-item">
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<strong>IP哈希</strong>：就像记住老顾客的习惯，张三总是去A店，李四总是去B店，保证体验一致。
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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="info-box">
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<p>
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💡 <strong>关键价值</strong>：负载均衡不仅能<strong>提高吞吐量</strong>，还能提供<strong>高可用性</strong>。
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某台服务器挂了，负载均衡器会自动把流量导向其他健康的服务器！
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</p>
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</div>
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</div>
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</template>
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<style scoped>
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.deployment-lb {
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border: 1px solid var(--vp-c-divider);
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border-radius: 8px;
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background-color: var(--vp-c-bg-soft);
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max-height: 600px;
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overflow-y: auto;
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margin: 1rem 0;
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}
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.demo-header {
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padding: 1.25rem;
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background: var(--vp-c-bg);
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border-bottom: 1px solid var(--vp-c-divider);
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}
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.demo-header h3 {
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margin: 0 0 0.5rem 0;
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font-size: 1.2rem;
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color: var(--vp-c-text-1);
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}
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.subtitle {
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margin: 0;
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font-size: 0.9rem;
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color: var(--vp-c-text-2);
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}
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.intro-text {
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padding: 1rem 1.25rem;
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font-size: 0.9rem;
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color: var(--vp-c-text-2);
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line-height: 1.6;
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border-bottom: 1px solid var(--vp-c-divider);
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}
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.demo-content {
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padding: 1.25rem;
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display: flex;
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flex-direction: column;
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gap: 1.5rem;
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}
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.section-title {
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font-size: 0.95rem;
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font-weight: 600;
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color: var(--vp-c-text-1);
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margin-bottom: 0.75rem;
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}
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.algorithm-section {
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background: var(--vp-c-bg);
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border-radius: 8px;
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padding: 1rem;
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border: 1px solid var(--vp-c-divider);
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}
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.algorithm-list {
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display: flex;
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flex-direction: column;
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gap: 0.5rem;
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}
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.algorithm-item {
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background: var(--vp-c-bg-soft);
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border: 2px solid var(--vp-c-divider);
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border-radius: 6px;
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padding: 0.75rem;
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cursor: pointer;
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transition: all 0.3s ease;
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}
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.algorithm-item:hover {
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border-color: var(--vp-c-brand-soft);
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}
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.algorithm-item.active {
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border-color: var(--vp-c-brand);
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background: var(--vp-c-brand-soft);
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}
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.algo-header {
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display: flex;
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align-items: center;
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gap: 0.5rem;
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margin-bottom: 0.25rem;
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}
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.algo-icon {
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font-size: 0.9rem;
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color: var(--vp-c-brand);
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font-weight: 700;
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}
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.algo-name {
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font-size: 0.9rem;
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font-weight: 600;
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color: var(--vp-c-text-1);
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}
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.algo-desc {
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font-size: 0.8rem;
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color: var(--vp-c-text-2);
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padding-left: 1.4rem;
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}
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.lb-visualization {
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background: var(--vp-c-bg);
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border-radius: 8px;
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padding: 1.5rem;
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border: 1px solid var(--vp-c-divider);
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display: flex;
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flex-direction: column;
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align-items: center;
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gap: 1rem;
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}
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.lb-node {
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background: var(--vp-c-brand-soft);
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border: 2px solid var(--vp-c-brand);
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border-radius: 8px;
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padding: 1rem;
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text-align: center;
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width: 100%;
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max-width: 280px;
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}
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.lb-icon {
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font-size: 2rem;
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margin-bottom: 0.5rem;
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}
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.lb-title {
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font-size: 1rem;
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font-weight: 700;
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color: var(--vp-c-text-1);
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margin-bottom: 0.25rem;
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}
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.lb-algorithm {
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font-size: 0.85rem;
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color: var(--vp-c-brand);
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margin-bottom: 0.5rem;
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}
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.lb-stats {
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font-size: 0.8rem;
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color: var(--vp-c-text-2);
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font-family: var(--vp-font-family-mono);
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}
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.lb-arrows {
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display: flex;
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gap: 1rem;
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justify-content: center;
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}
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.arrow-line {
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font-size: 1.5rem;
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color: var(--vp-c-brand);
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animation: flow 1.5s infinite;
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}
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@keyframes flow {
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0%, 100% { opacity: 0.3; transform: translateX(-5px); }
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50% { opacity: 1; transform: translateX(5px); }
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}
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.servers-grid {
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display: grid;
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grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
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gap: 0.75rem;
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width: 100%;
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}
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.server-card {
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background: var(--vp-c-bg-soft);
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border: 2px solid var(--vp-c-divider);
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border-radius: 8px;
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padding: 1rem;
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text-align: center;
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transition: all 0.3s ease;
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}
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.server-card.highlighted {
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border-color: var(--vp-c-brand);
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background: var(--vp-c-brand-dimm);
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}
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.server-icon {
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font-size: 1.5rem;
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margin-bottom: 0.5rem;
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}
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.server-name {
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font-size: 0.9rem;
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font-weight: 600;
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color: var(--vp-c-text-1);
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margin-bottom: 0.5rem;
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}
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.server-status {
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display: flex;
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align-items: center;
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justify-content: center;
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gap: 0.35rem;
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margin-bottom: 0.75rem;
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}
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.status-dot {
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width: 8px;
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height: 8px;
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border-radius: 50%;
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background: var(--vp-c-text-3);
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}
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.status-dot.healthy {
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background: var(--vp-c-brand-delta);
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}
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.status-text {
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font-size: 0.75rem;
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color: var(--vp-c-text-2);
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}
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.server-metrics {
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display: flex;
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flex-direction: column;
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gap: 0.5rem;
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}
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.metric-item {
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display: flex;
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justify-content: space-between;
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align-items: center;
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gap: 0.5rem;
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}
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.metric-label {
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font-size: 0.75rem;
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color: var(--vp-c-text-2);
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}
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.metric-value {
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font-size: 0.85rem;
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font-weight: 700;
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color: var(--vp-c-brand);
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font-family: var(--vp-font-family-mono);
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}
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.load-bar {
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width: 50px;
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height: 6px;
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background: var(--vp-c-bg-alt);
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border-radius: 3px;
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overflow: hidden;
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}
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.load-fill {
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height: 100%;
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background: linear-gradient(90deg, var(--vp-c-brand), var(--vp-c-brand-1));
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transition: width 0.3s ease;
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}
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.analogy-box {
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background: var(--vp-c-bg);
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border-radius: 8px;
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padding: 1rem;
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border: 1px solid var(--vp-c-divider);
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border-left: 3px solid var(--vp-c-brand);
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}
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.analogy-title {
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font-size: 0.9rem;
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font-weight: 600;
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color: var(--vp-c-text-1);
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margin-bottom: 0.5rem;
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}
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.analogy-content {
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font-size: 0.85rem;
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color: var(--vp-c-text-2);
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line-height: 1.5;
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}
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.info-box {
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padding: 1rem 1.25rem;
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margin: 0;
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background: var(--vp-c-bg);
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border-top: 1px solid var(--vp-c-divider);
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font-size: 0.9rem;
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color: var(--vp-c-text-2);
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line-height: 1.6;
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}
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.info-box p {
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margin: 0;
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}
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@media (max-width: 640px) {
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.servers-grid {
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grid-template-columns: 1fr;
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}
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}
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</style>
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