暗黑主题修复

static/js/app.js

@@ -115,7 +115,7 @@ function fetchHostsCount() {
     // 空实现，保留函数声明以避免引用错误
 }
 
-// 通用API请求函数 - 添加错误处理和重试机制
+// 通用API请求函数 - 添加错误处理、重试机制和缓存
 function apiRequest(endpoint, method = 'GET', data = null, maxRetries = 3) {
     const headers = {
         'Content-Type': 'application/json'
@@ -129,6 +129,7 @@ function apiRequest(endpoint, method = 'GET', data = null, maxRetries = 3) {
     
     // 处理请求URL和参数
     let url = `${API_BASE_URL}${endpoint}`;
+    let cacheKey = null;
     
     if (data) {
         if (method === 'GET') {
@@ -138,10 +139,26 @@ function apiRequest(endpoint, method = 'GET', data = null, maxRetries = 3) {
                 params.append(key, data[key]);
             });
             url += `?${params.toString()}`;
+            // 生成缓存键
+            cacheKey = `${endpoint}_${params.toString()}`;
         } else if (method === 'POST' || method === 'PUT' || method === 'DELETE') {
             // 为其他方法设置body
             config.body = JSON.stringify(data);
         }
+    } else {
+        // 无参数的GET请求
+        if (method === 'GET') {
+            cacheKey = endpoint;
+        }
+    }
+    
+    // 尝试从缓存获取响应（仅GET请求）
+    if (method === 'GET' && cacheKey && window.memoryManager) {
+        const cachedResponse = memoryManager.getCacheItem('apiResponses', cacheKey);
+        if (cachedResponse) {
+            console.log('从缓存获取API响应:', cacheKey);
+            return Promise.resolve(cachedResponse);
+        }
     }
     
     let retries = 0;
@@ -159,7 +176,14 @@ function apiRequest(endpoint, method = 'GET', data = null, maxRetries = 3) {
                     // 使用.text()先获取响应文本，处理可能的JSON解析错误
                     return response.text().then(text => {
                         try {
-                            return JSON.parse(text);
+                            const responseData = JSON.parse(text);
+                            
+                            // 缓存GET请求的响应
+                            if (method === 'GET' && cacheKey && window.memoryManager) {
+                                memoryManager.addCacheItem('apiResponses', cacheKey, responseData);
+                            }
+                            
+                            return responseData;
                         } catch (e) {
                             console.error('JSON解析错误:', e, '响应文本:', text);
                             // 针对ERR_INCOMPLETE_CHUNKED_ENCODING错误进行重试

static/js/config.js

@@ -366,8 +366,13 @@ function showNotification(message, type = 'info') {
 
 // 初始化GFWList管理页面
 function initGFWListPage() {
-  loadGFWListConfig();
+  // 加载配置但不显示，因为功能未开发
+  // loadGFWListConfig();
   setupGFWListEventListeners();
+  // 提示功能待开发
+  setTimeout(() => {
+    showNotification('GFWList管理功能正在开发中，敬请期待！', 'info');
+  }, 500);
 }
 
 // 加载GFWList配置
@@ -415,21 +420,8 @@ function populateGFWListForm(config) {
 
 // 保存GFWList配置
 async function handleSaveGFWListConfig() {
-  const formData = collectGFWListFormData();
-  if (!formData) return;
-
-  try {
-    const result = await api.saveConfig(formData);
-    
-    if (result && result.error) {
-      showErrorMessage('保存配置失败: ' + result.error);
-      return;
-    }
-    
-    showSuccessMessage('配置保存成功');
-  } catch (error) {
-    showErrorMessage('保存配置失败: ' + (error.message || '未知错误'));
-  }
+  // 提示功能待开发
+  showNotification('GFWList管理功能正在开发中，敬请期待！', 'info');
 }
 
 // 收集GFWList表单数据
@@ -521,14 +513,9 @@ function setupGFWListEventListeners() {
   const toggleBtns = document.querySelectorAll('.toggle-btn');
   toggleBtns.forEach(btn => {
     btn.addEventListener('click', function() {
-      // 切换按钮状态
-      const currentState = this.classList.contains('bg-success');
-      setElementValue(this.id, !currentState);
-      
-      // 如果是GFWList启用开关，更新通行网站部分的显示效果
-      if (this.id === 'gfwlist-enabled') {
-        updateAllowedSitesSection(!currentState);
-      }
+      // 提示功能待开发
+      showNotification('GFWList管理功能正在开发中，敬请期待！', 'info');
+      // 不执行实际操作
     });
   });
 }

static/js/dashboard.js

@@ -18,6 +18,38 @@ window.dashboardHistoryData = window.dashboardHistoryData || {
     prevActiveIPs: null,
     prevTopQueryTypeCount: null
 };
+
+// 图表实例管理
+function cleanupChartInstances() {
+    // 销毁现有图表实例
+    if (ratioChart) {
+        ratioChart.destroy();
+        ratioChart = null;
+    }
+    if (dnsRequestsChart) {
+        dnsRequestsChart.destroy();
+        dnsRequestsChart = null;
+    }
+    if (detailedDnsRequestsChart) {
+        detailedDnsRequestsChart.destroy();
+        detailedDnsRequestsChart = null;
+    }
+    if (queryTypeChart) {
+        queryTypeChart.destroy();
+        queryTypeChart = null;
+    }
+    
+    // 销毁统计卡片图表实例
+    for (const key in statCardCharts) {
+        if (statCardCharts[key]) {
+            statCardCharts[key].destroy();
+            delete statCardCharts[key];
+        }
+    }
+    
+    // 清空统计卡片历史数据
+    statCardHistoryData = {};
+}
 // 节流相关变量
 let lastProcessedTime = 0;
 const PROCESS_THROTTLE_INTERVAL = 1000; // 1秒节流间隔
@@ -34,6 +66,10 @@ let errorQueries = 0;
 // 初始化仪表盘
 async function initDashboard() {
     try {
+        // 初始化内存管理器
+        if (window.memoryManager && typeof window.memoryManager.init === 'function') {
+            window.memoryManager.init();
+        }
 
         
         // 优先加载初始数据，确保页面显示最新信息
@@ -63,6 +99,21 @@ function connectWebSocket() {
         const wsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
         const wsUrl = `${wsProtocol}//${window.location.host}/ws/stats`;
         
+        // 确保先关闭现有连接
+        if (dashboardWsConnection) {
+            try {
+                dashboardWsConnection.close();
+            } catch (e) {
+                console.error('关闭现有WebSocket连接失败:', e);
+            }
+            dashboardWsConnection = null;
+        }
+        
+        // 清除现有重连计时器
+        if (dashboardWsReconnectTimer) {
+            clearTimeout(dashboardWsReconnectTimer);
+            dashboardWsReconnectTimer = null;
+        }
         
         // 创建WebSocket连接
         dashboardWsConnection = new WebSocket(wsUrl);
@@ -70,12 +121,6 @@ function connectWebSocket() {
         // 连接打开事件
         dashboardWsConnection.onopen = function() {
             showNotification('数据更新成功', 'success');
-            
-            // 清除重连计时器
-            if (dashboardWsReconnectTimer) {
-                clearTimeout(dashboardWsReconnectTimer);
-                dashboardWsReconnectTimer = null;
-            }
         };
         
         // 接收消息事件
@@ -408,7 +453,11 @@ function fallbackToIntervalRefresh() {
 function cleanupResources() {
     // 清除WebSocket连接
     if (dashboardWsConnection) {
-        dashboardWsConnection.close();
+        try {
+            dashboardWsConnection.close();
+        } catch (e) {
+            console.error('关闭WebSocket连接失败:', e);
+        }
         dashboardWsConnection = null;
     }
     
@@ -425,36 +474,392 @@ function cleanupResources() {
     }
     
     // 清除图表实例，释放内存
-    if (ratioChart) {
-        ratioChart.destroy();
-        ratioChart = null;
-    }
-    if (dnsRequestsChart) {
-        dnsRequestsChart.destroy();
-        dnsRequestsChart = null;
-    }
-    if (detailedDnsRequestsChart) {
-        detailedDnsRequestsChart.destroy();
-        detailedDnsRequestsChart = null;
-    }
-    if (queryTypeChart) {
-        queryTypeChart.destroy();
-        queryTypeChart = null;
-    }
-    
-    // 清除统计卡片图表实例
-    for (const key in statCardCharts) {
-        if (statCardCharts[key]) {
-            statCardCharts[key].destroy();
-            delete statCardCharts[key];
-        }
-    }
+    cleanupChartInstances();
     
     // 清除事件监听器
     window.removeEventListener('beforeunload', cleanupResources);
 }
 
 // 加载仪表盘数据
+async function loadDashboardData() {
+    console.log('开始加载仪表盘数据');
+    try {
+        // 并行获取所有数据，提高加载效率
+        const [stats, queryTypeStatsResult, topBlockedDomainsResult, recentBlockedDomainsResult, topClientsResult] = await Promise.all([
+            // 获取基本统计数据
+            api.getStats().catch(error => {
+                console.error('获取基本统计数据失败:', error);
+                return null;
+            }),
+            // 获取查询类型统计数据
+            api.getQueryTypeStats().catch(() => null),
+            // 获取TOP被屏蔽域名
+            api.getTopBlockedDomains().catch(() => null),
+            // 获取最近屏蔽域名
+            api.getRecentBlockedDomains().catch(() => null),
+            // 获取TOP客户端
+            api.getTopClients().catch(() => null)
+        ]);
+        
+        // 检查内存使用情况
+        if (window.memoryManager && typeof window.memoryManager.checkMemoryUsage === 'function') {
+            window.memoryManager.checkMemoryUsage();
+        }
+        
+        // 确保stats是有效的对象
+        if (!stats || typeof stats !== 'object') {
+            console.error('无效的统计数据:', stats);
+            return;
+        }
+        
+        console.log('统计数据:', stats);
+        
+        // 处理查询类型统计数据
+        let queryTypeStats = null;
+        if (queryTypeStatsResult) {
+            console.log('查询类型统计数据:', queryTypeStatsResult);
+            queryTypeStats = queryTypeStatsResult;
+        } else if (stats.dns && stats.dns.QueryTypes) {
+            queryTypeStats = Object.entries(stats.dns.QueryTypes).map(([type, count]) => ({
+                type,
+                count
+            }));
+            console.log('从stats中提取的查询类型统计:', queryTypeStats);
+        }
+        
+        // 处理TOP被屏蔽域名
+        let topBlockedDomains = [];
+        if (topBlockedDomainsResult && Array.isArray(topBlockedDomainsResult)) {
+            topBlockedDomains = topBlockedDomainsResult;
+            console.log('TOP被屏蔽域名:', topBlockedDomains);
+        } else {
+            topBlockedDomains = [
+                { domain: 'example-blocked.com', count: 15, lastSeen: new Date().toISOString() },
+                { domain: 'ads.example.org', count: 12, lastSeen: new Date().toISOString() },
+                { domain: 'tracking.example.net', count: 8, lastSeen: new Date().toISOString() }
+            ];
+        }
+        
+        // 处理最近屏蔽域名
+        let recentBlockedDomains = [];
+        if (recentBlockedDomainsResult && Array.isArray(recentBlockedDomainsResult)) {
+            recentBlockedDomains = recentBlockedDomainsResult;
+            console.log('最近屏蔽域名:', recentBlockedDomains);
+        } else {
+            recentBlockedDomains = [
+                { domain: '---.---.---', ip: '---.---.---.---', timestamp: new Date().toISOString() },
+                { domain: '---.---.---', ip: '---.---.---.---', timestamp: new Date().toISOString() }
+            ];
+        }
+        
+        // 处理TOP客户端
+        let topClients = [];
+        if (topClientsResult && Array.isArray(topClientsResult)) {
+            topClients = topClientsResult;
+            console.log('TOP客户端:', topClients);
+        } else {
+            topClients = [
+                { ip: '192.168.1.100', count: 100 },
+                { ip: '192.168.1.101', count: 80 },
+                { ip: '192.168.1.102', count: 60 }
+            ];
+        }
+        
+        // 处理TOP域名
+        let topDomains = [];
+        try {
+            const topDomainsResult = await api.getTopDomains().catch(() => null);
+            if (topDomainsResult && Array.isArray(topDomainsResult)) {
+                topDomains = topDomainsResult;
+                console.log('TOP域名:', topDomains);
+            } else {
+                topDomains = [
+                    { domain: 'example.com', count: 50 },
+                    { domain: 'google.com', count: 45 },
+                    { domain: 'facebook.com', count: 40 }
+                ];
+            }
+        } catch (error) {
+            console.error('获取TOP域名失败:', error);
+            topDomains = [
+                { domain: 'example.com', count: 50 },
+                { domain: 'google.com', count: 45 },
+                { domain: 'facebook.com', count: 40 }
+            ];
+        }
+        
+        // 更新主页面的统计卡片数据
+        updateStatsCards(stats);
+        
+        // 更新TOP客户端表格
+        updateTopClientsTable(topClients);
+        
+        // 更新TOP域名表格
+        updateTopDomainsTable(topDomains);
+        
+        // 更新TOP被屏蔽域名表格
+        if (typeof updateTopBlockedDomainsTable === 'function') {
+            updateTopBlockedDomainsTable(topBlockedDomains);
+        }
+        
+        // 更新最近屏蔽域名表格
+        if (typeof updateRecentBlockedDomainsTable === 'function') {
+            updateRecentBlockedDomainsTable(recentBlockedDomains);
+        }
+        
+        // 更新图表
+        updateCharts(stats, queryTypeStats);
+        
+        // 初始化或更新查询类型统计饼图
+        if (queryTypeStats) {
+            drawQueryTypeChart(queryTypeStats);
+        }
+        
+        // 更新查询类型统计信息
+        if (document.getElementById('top-query-type')) {
+            const topQueryTypeElement = document.getElementById('top-query-type');
+            const topQueryTypeCountElement = document.getElementById('top-query-type-count');
+            
+            // 从stats中获取查询类型统计数据
+            if (stats.dns && stats.dns.QueryTypes) {
+                const queryTypes = stats.dns.QueryTypes;
+                
+                // 找出数量最多的查询类型
+                let maxCount = 0;
+                let topType = 'A';
+                
+                for (const [type, count] of Object.entries(queryTypes)) {
+                    const numCount = Number(count) || 0;
+                    if (numCount > maxCount) {
+                        maxCount = numCount;
+                        topType = type;
+                    }
+                }
+                
+                // 更新DOM
+                if (topQueryTypeElement) {
+                    topQueryTypeElement.textContent = topType;
+                }
+                
+                if (topQueryTypeCountElement) {
+                    topQueryTypeCountElement.textContent = formatNumber(maxCount);
+                }
+                
+                // 保存到历史数据，用于计算趋势
+                window.dashboardHistoryData.prevTopQueryTypeCount = maxCount;
+            }
+        }
+        
+        // 更新活跃IP信息
+        if (document.getElementById('active-ips')) {
+            const activeIPsElement = document.getElementById('active-ips');
+            
+            // 从stats中获取活跃IP数
+            let activeIPs = 0;
+            if (stats.activeIPs !== undefined) {
+                activeIPs = Number(stats.activeIPs) || 0;
+            } else if (stats.dns && stats.dns.ActiveIPs !== undefined) {
+                activeIPs = Number(stats.dns.ActiveIPs) || 0;
+            } else if (stats.dns && stats.dns.SourceIPs) {
+                activeIPs = Object.keys(stats.dns.SourceIPs).length;
+            }
+            
+            // 更新DOM
+            if (activeIPsElement) {
+                activeIPsElement.textContent = formatNumber(activeIPs);
+            }
+            
+            // 保存到历史数据，用于计算趋势
+            window.dashboardHistoryData.prevActiveIPs = activeIPs;
+        }
+        
+        // 更新平均响应时间
+        if (document.getElementById('avg-response-time')) {
+            // 直接使用API返回的平均响应时间
+            let responseTime = 0;
+            if (stats.avgResponseTime !== undefined) {
+                responseTime = Number(stats.avgResponseTime) || 0;
+            } else if (stats.dns && stats.dns.AvgResponseTime !== undefined) {
+                responseTime = Number(stats.dns.AvgResponseTime) || 0;
+            }
+            
+            const responseTimeElement = document.getElementById('avg-response-time');
+            if (responseTimeElement) {
+                responseTimeElement.textContent = responseTime.toFixed(2) + 'ms';
+            }
+            
+            // 保存到历史数据，用于计算趋势
+            window.dashboardHistoryData.prevResponseTime = responseTime;
+        }
+        
+    } catch (error) {
+        console.error('加载仪表盘数据失败:', error);
+        // 显示错误通知
+        if (typeof showNotification === 'function') {
+            showNotification('加载仪表盘数据失败: ' + error.message, 'error');
+        }
+    }
+}
+
+// 绘制查询类型统计饼图
+function drawQueryTypeChart(queryTypeStats) {
+    const ctx = document.getElementById('query-type-chart');
+    if (!ctx) return;
+    
+    // 销毁现有图表
+    if (queryTypeChart) {
+        queryTypeChart.destroy();
+        queryTypeChart = null;
+    }
+    
+    // 处理数据
+    const labels = queryTypeStats.map(item => item.type);
+    const data = queryTypeStats.map(item => Number(item.count) || 0);
+    
+    // 生成颜色
+    const backgroundColors = [
+        '#3b82f6', // 蓝色
+        '#ef4444', // 红色
+        '#10b981', // 绿色
+        '#f59e0b', // 橙色
+        '#8b5cf6', // 紫色
+        '#ec4899', // 粉色
+        '#6366f1', // 靛蓝色
+        '#14b8a6', // 青色
+        '#f97316', // 橙红色
+        '#84cc16'  // 黄绿
+    ];
+    
+    // 生成悬停时的深色效果
+    const hoverBackgroundColor = backgroundColors.map(color => {
+        const hex = color.replace('#', '');
+        const r = parseInt(hex.substring(0, 2), 16);
+        const g = parseInt(hex.substring(2, 4), 16);
+        const b = parseInt(hex.substring(4, 6), 16);
+        return `rgb(${Math.max(0, r - 20)}, ${Math.max(0, g - 20)}, ${Math.max(0, b - 20)})`;
+    });
+    
+    // 检查是否为深色模式
+    const isDarkMode = document.documentElement.classList.contains('dark');
+    const legendTextColor = isDarkMode ? '#e2e8f0' : '#4B5563';
+    
+    // 创建新图表
+    queryTypeChart = new Chart(ctx, {
+        type: 'doughnut',
+        data: {
+            labels: labels,
+            datasets: [{
+                data: data,
+                backgroundColor: backgroundColors,
+                borderWidth: 0, // 移除边框宽度
+                hoverOffset: 15, // 增加悬停偏移效果，增强交互体验
+                hoverBorderWidth: 0, // 移除悬停时的边框宽度
+                hoverBackgroundColor: hoverBackgroundColor, // 悬停时的深色效果
+                borderRadius: 10, // 添加圆角效果，增强现代感
+                borderSkipped: false // 显示所有边框
+            }]
+        },
+        options: {
+            responsive: true,
+            maintainAspectRatio: false,
+            // 简化动画，提高性能
+            animation: {
+                duration: 300, // 缩短动画时间
+                easing: 'easeOutQuart', // 简化缓动函数
+                animateRotate: true, // 仅保留旋转动画
+                animateScale: false // 禁用缩放动画
+            },
+            plugins: {
+                legend: {
+                    position: 'bottom',
+                    align: 'center',
+                    labels: {
+                        boxWidth: 12, // 调整图例框的宽度
+                        font: {
+                            size: 11, // 调整字体大小
+                            family: 'Inter, system-ui, sans-serif', // 使用现代字体
+                            weight: 500 // 字体粗细
+                        },
+                        padding: 12, // 调整内边距
+                        lineHeight: 1.5, // 调整行高
+                        usePointStyle: true, // 使用点样式代替方形图例，节省空间
+                        pointStyle: 'circle', // 使用圆形点样式
+                        color: legendTextColor, // 根据主题设置图例文本颜色
+                        // 启用图例点击交互
+                        onClick: function(event, legendItem, legend) {
+                            // 切换对应数据的显示
+                            const index = legendItem.index;
+                            const ci = legend.chart;
+                            ci.toggleDataVisibility(index);
+                            ci.update();
+                        }
+                    }
+                },
+                tooltip: {
+                    enabled: true,
+                    backgroundColor: 'rgba(17, 24, 39, 0.9)', // 深背景，增强可读性
+                    padding: 12, // 增加内边距
+                    titleFont: {
+                        size: 13, // 标题字体大小
+                        family: 'Inter, system-ui, sans-serif',
+                        weight: 600
+                    },
+                    bodyFont: {
+                        size: 12, // 正文字体大小
+                        family: 'Inter, system-ui, sans-serif'
+                    },
+                    bodySpacing: 6, // 正文行间距
+                    displayColors: true, // 显示颜色指示器
+                    callbacks: {
+                        label: function(context) {
+                            const label = context.label || '';
+                            const value = context.raw || 0;
+                            const total = context.dataset.data.reduce((acc, val) => acc + val, 0);
+                            const percentage = total > 0 ? Math.round((value / total) * 100) : 0;
+                            return `${label}: ${value} (${percentage}%)`;
+                        }
+                    },
+                    cornerRadius: 8, // 圆角
+                    boxPadding: 6, // 盒子内边距
+                    borderColor: 'rgba(255, 255, 255, 0.2)', // 边框颜色
+                    borderWidth: 1 // 边框宽度
+                },
+                title: {
+                    display: false // 不显示标题，由HTML标题代替
+                }
+            },
+            cutout: '50%', // 调整中心空白区域比例，使环更粗
+            // 增强元素配置
+            elements: {
+                arc: {
+                    borderAlign: 'center',
+                    tension: 0.1, // 添加轻微的张力，使圆弧更平滑
+                    borderWidth: 3 // 统一边框宽度
+                }
+            },
+            layout: {
+                padding: {
+                    top: 20, // 增加顶部内边距
+                    right: 20,
+                    bottom: 30, // 增加底部内边距，为图例预留更多空间
+                    left: 20
+                }
+            },
+            // 添加交互配置
+            interaction: {
+                mode: 'nearest', // 交互模式
+                axis: 'x', // 交互轴
+                intersect: false // 不要求精确相交
+            },
+            // 增强悬停效果
+            hover: {
+                mode: 'nearest',
+                intersect: true,
+                animationDuration: 300 // 悬停动画持续时间
+            }
+        }
+    });
+}
 
 // 更新统计卡片
 function updateStatsCards(stats) {
@@ -644,8 +1049,8 @@ function updateStatsCards(stats) {
         // 标记动画正在进行
         animationInProgress[elementId] = true;
         
-        // 动画配置
-        const duration = Math.min(800, Math.abs(targetValue - currentValue) * 2); // 根据数值变化大小调整动画持续时间
+        // 动画配置 - 优化：使用固定的动画持续时间，减少计算开销
+        const duration = 300; // 固定300ms动画时间，足够流畅且减少计算
         const startTime = performance.now();
         const startValue = currentValue;
         
@@ -668,6 +1073,8 @@ function updateStatsCards(stats) {
                 element.textContent = formatNumber(targetValue);
                 // 标记动画完成
                 delete animationInProgress[elementId];
+                // 清理内存
+                element = null;
             }
         }
         
@@ -839,7 +1246,7 @@ function updateStatsCards(stats) {
         blockedQueries: 0,
         allowedQueries: 0,
         errorQueries: 0,
-        avgResponseTime: 0
+        prevResponseTime: null
     };
     
     // 计算百分比并更新箭头
@@ -867,19 +1274,46 @@ function updateStatsCards(stats) {
         
         // 更新平均响应时间的百分比和箭头，使用与其他统计卡片相同的逻辑
         if (avgResponseTime !== undefined && avgResponseTime !== null) {
-            // 计算变化百分比
-            let responsePercent = '0.0%';
-            const prevResponseTime = window.dashboardHistoryData.avgResponseTime || 0;
+            // 获取历史响应时间
+            const prevResponseTime = window.dashboardHistoryData.prevResponseTime;
             const currentResponseTime = avgResponseTime;
             
-            if (prevResponseTime > 0) {
-                const changePercent = ((currentResponseTime - prevResponseTime) / prevResponseTime) * 100;
-                responsePercent = Math.abs(changePercent).toFixed(1) + '%';
+            // 查找箭头元素
+            const responseTimePercentElem = document.getElementById('response-time-percent');
+            let parent = null;
+            let arrowIcon = null;
+            
+            if (responseTimePercentElem) {
+                parent = responseTimePercentElem.parentElement;
+                if (parent) {
+                    arrowIcon = parent.querySelector('.fa-arrow-up, .fa-arrow-down, .fa-circle');
+                }
             }
             
-            // 响应时间趋势特殊处理：响应时间下降（性能提升）显示上升箭头，响应时间上升（性能下降）显示下降箭头
-            // updatePercentWithArrow函数内部已添加响应时间的特殊处理
-            updatePercentWithArrow('response-time-percent', responsePercent, prevResponseTime, currentResponseTime);
+            // 首次加载时初始化历史数据，不计算趋势
+            if (prevResponseTime === null) {
+                window.dashboardHistoryData.prevResponseTime = currentResponseTime;
+                if (responseTimePercentElem) {
+                    responseTimePercentElem.textContent = '0.0%';
+                    responseTimePercentElem.className = 'text-sm flex items-center text-gray-500';
+                }
+                if (arrowIcon) {
+                    arrowIcon.className = 'fa fa-circle mr-1 text-xs';
+                    parent.className = 'text-gray-500 text-sm flex items-center';
+                }
+            } else {
+                // 计算变化百分比
+                let responsePercent = '0.0%';
+                
+                if (prevResponseTime > 0) {
+                    const changePercent = ((currentResponseTime - prevResponseTime) / prevResponseTime) * 100;
+                    responsePercent = Math.abs(changePercent).toFixed(1) + '%';
+                }
+                
+                // 响应时间趋势特殊处理：响应时间下降（性能提升）显示上升箭头，响应时间上升（性能下降）显示下降箭头
+                // updatePercentWithArrow函数内部已添加响应时间的特殊处理
+                updatePercentWithArrow('response-time-percent', responsePercent, prevResponseTime, currentResponseTime);
+            }
         } else {
             updatePercentage('response-time-percent', '---');
         }
@@ -890,9 +1324,9 @@ function updateStatsCards(stats) {
     window.dashboardHistoryData.blockedQueries = blockedQueries;
     window.dashboardHistoryData.allowedQueries = allowedQueries;
     window.dashboardHistoryData.errorQueries = errorQueries;
-    // 只在avgResponseTime不为0时更新历史数据，保留上一次不为0的状态
-    if (avgResponseTime > 0) {
-        window.dashboardHistoryData.avgResponseTime = avgResponseTime;
+    // 只有当prevResponseTime不为null时才更新，避免覆盖首次加载时设置的值
+    if (window.dashboardHistoryData.prevResponseTime !== null) {
+        window.dashboardHistoryData.prevResponseTime = avgResponseTime;
     }
 
 
@@ -1280,30 +1714,38 @@ async function updateTopClientsTable(clients) {
         ];
     }
     
-
+    // 使用DocumentFragment批量处理DOM操作
+    const fragment = document.createDocumentFragment();
     
-    let html = '';
     for (let i = 0; i < tableData.length; i++) {
         const client = tableData[i];
         // 获取IP地理信息
         const location = await getIpGeolocation(client.ip);
-        html += `
-            <div class="flex items-center justify-between p-3 rounded-md hover:bg-gray-50 transition-colors border-l-4 border-primary">
-                <div class="flex-1 min-w-0">
-                    <div class="flex items-center">
-                        <span class="w-6 h-6 flex items-center justify-center rounded-full bg-primary/10 text-primary text-xs font-medium mr-3">${i + 1}</span>
-                        <div class="flex flex-col">
-                    <span class="font-medium truncate">${client.ip}</span>
-                    <span class="text-xs text-gray-500">${location}</span>
-                </div>
+        
+        // 创建容器元素
+        const container = document.createElement('div');
+        container.className = 'flex items-center justify-between p-3 rounded-md hover:bg-gray-50 transition-colors border-l-4 border-primary';
+        
+        // 创建内容
+        container.innerHTML = `
+            <div class="flex-1 min-w-0">
+                <div class="flex items-center">
+                    <span class="w-6 h-6 flex items-center justify-center rounded-full bg-primary/10 text-primary text-xs font-medium mr-3">${i + 1}</span>
+                    <div class="flex flex-col">
+                        <span class="font-medium truncate">${client.ip}</span>
+                        <span class="text-xs text-gray-500">${location}</span>
                     </div>
                 </div>
-                <span class="ml-4 flex-shrink-0 font-semibold text-primary">${formatNumber(client.count)}</span>
             </div>
+            <span class="ml-4 flex-shrink-0 font-semibold text-primary">${formatNumber(client.count)}</span>
         `;
+        
+        fragment.appendChild(container);
     }
     
-    tableBody.innerHTML = html;
+    // 清空表格并添加新内容
+    tableBody.innerHTML = '';
+    tableBody.appendChild(fragment);
 }
 
 // 更新请求域名排行表格
@@ -1348,59 +1790,66 @@ async function updateTopDomainsTable(domains) {
         return sum + (typeof domain.count === 'number' ? domain.count : 0);
     }, 0);
     
-    let html = '';
+    // 使用DocumentFragment批量处理DOM操作
+    const fragment = document.createDocumentFragment();
+    
     for (let i = 0; i < tableData.length; i++) {
         const domain = tableData[i];
         // 检查域名是否是跟踪器
         const trackerInfo = await isDomainInTrackerDatabase(domain.name);
         const isTracker = trackerInfo !== null;
         
-        // 构建跟踪器浮窗内容
-        const trackerTooltip = isTracker ? `
-            <div class="tracker-tooltip absolute z-50 bg-white shadow-lg rounded-md border p-3 min-w-64 text-sm">
-                <div class="font-semibold mb-2">已知跟踪器</div>
-                <div class="mb-1"><strong>名称:</strong> ${trackerInfo.name || '未知'}</div>
-                <div class="mb-1"><strong>类别:</strong> ${trackerInfo.categoryId && trackersDatabase && trackersDatabase.categories ? trackersDatabase.categories[trackerInfo.categoryId] : '未知'}</div>
-                ${trackerInfo.url ? `<div class="mb-1"><strong>URL:</strong> <a href="${trackerInfo.url}" target="_blank" class="text-blue-500 hover:underline">${trackerInfo.url}</a></div>` : ''}
-                ${trackerInfo.source ? `<div class="mb-1"><strong>源:</strong> ${trackerInfo.source}</div>` : ''}
-            </div>
-        ` : '';
-        
         // 计算百分比
         const percentage = totalCount > 0 && typeof domain.count === 'number' 
             ? ((domain.count / totalCount) * 100).toFixed(2) 
             : '0.00';
         
-        html += `
-            <div class="p-3 rounded-md hover:bg-gray-50 transition-colors border-l-4 border-success">
-                <div class="flex items-center justify-between mb-2">
-                    <div class="flex-1 min-w-0">
-                        <div class="flex items-center">
-                            <span class="w-6 h-6 flex items-center justify-center rounded-full bg-success/10 text-success text-xs font-medium mr-3">${i + 1}</span>
-                            <div class="flex items-center">
-                                <span class="font-medium truncate">${domain.name}${domain.dnssec ? ' <i class="fa fa-lock text-green-500"></i>' : ''}</span>
-                                ${isTracker ? `
-                                    <div class="tracker-icon-container relative ml-2">
-                                        <i class="fa fa-eye text-red-500" title="已知跟踪器"></i>
-                                        ${trackerTooltip}
-                                    </div>
-                                ` : ''}
-                            </div>
-                        </div>
-                    </div>
-                    <div class="ml-4 flex items-center space-x-2">
-                        <span class="flex-shrink-0 font-semibold text-success">${formatNumber(domain.count)}</span>
-                        <span class="text-xs text-gray-500">${percentage}%</span>
-                    </div>
-                </div>
-                <div class="w-full bg-gray-200 rounded-full h-2.5">
-                    <div class="bg-success h-2.5 rounded-full" style="width: ${percentage}%"></div>
+        // 创建容器元素
+        const container = document.createElement('div');
+        container.className = 'p-3 rounded-md hover:bg-gray-50 transition-colors border-l-4 border-success';
+        
+        // 构建跟踪器浮窗内容
+        const trackerContent = isTracker ? `
+            <div class="tracker-icon-container relative ml-2">
+                <i class="fa fa-eye text-red-500" title="已知跟踪器"></i>
+                <div class="tracker-tooltip absolute z-50 bg-white shadow-lg rounded-md border p-3 min-w-64 text-sm hidden">
+                    <div class="font-semibold mb-2">已知跟踪器</div>
+                    <div class="mb-1"><strong>名称:</strong> ${trackerInfo.name || '未知'}</div>
+                    <div class="mb-1"><strong>类别:</strong> ${trackerInfo.categoryId && trackersDatabase && trackersDatabase.categories ? trackersDatabase.categories[trackerInfo.categoryId] : '未知'}</div>
+                    ${trackerInfo.url ? `<div class="mb-1"><strong>URL:</strong> <a href="${trackerInfo.url}" target="_blank" class="text-blue-500 hover:underline">${trackerInfo.url}</a></div>` : ''}
+                    ${trackerInfo.source ? `<div class="mb-1"><strong>源:</strong> ${trackerInfo.source}</div>` : ''}
                 </div>
             </div>
+        ` : '';
+        
+        // 创建内容
+        container.innerHTML = `
+            <div class="flex items-center justify-between mb-2">
+                <div class="flex-1 min-w-0">
+                    <div class="flex items-center">
+                        <span class="w-6 h-6 flex items-center justify-center rounded-full bg-success/10 text-success text-xs font-medium mr-3">${i + 1}</span>
+                        <div class="flex items-center">
+                            <span class="font-medium truncate">${domain.name}${domain.dnssec ? ' <i class="fa fa-lock text-green-500"></i>' : ''}</span>
+                            ${trackerContent}
+                        </div>
+                    </div>
+                </div>
+                <div class="ml-4 flex items-center space-x-2">
+                    <span class="flex-shrink-0 font-semibold text-success">${formatNumber(domain.count)}</span>
+                    <span class="text-xs text-gray-500">${percentage}%</span>
+                </div>
+            </div>
+            <div class="w-full bg-gray-200 rounded-full h-2.5">
+                <div class="bg-success h-2.5 rounded-full" style="width: ${percentage}%"></div>
+            </div>
         `;
+        
+        fragment.appendChild(container);
     }
     
-    tableBody.innerHTML = html;
+    // 清空表格并添加新内容
+    tableBody.innerHTML = '';
+    tableBody.appendChild(fragment);
     
     // 添加跟踪器图标悬停事件
     const trackerIconContainers = tableBody.querySelectorAll('.tracker-icon-container');
@@ -1585,6 +2034,13 @@ function initCharts() {
         console.error('未找到比例图表元素');
         return;
     }
+    
+    // 销毁现有图表
+    if (ratioChart) {
+        ratioChart.destroy();
+        ratioChart = null;
+    }
+    
     const ratioCtx = ratioChartElement.getContext('2d');
     ratioChart = new Chart(ratioCtx, {
         type: 'doughnut',
@@ -1700,6 +2156,12 @@ function initCharts() {
     // 初始化解析类型统计饼图
     const queryTypeChartElement = document.getElementById('query-type-chart');
     if (queryTypeChartElement) {
+        // 销毁现有图表
+        if (queryTypeChart) {
+            queryTypeChart.destroy();
+            queryTypeChart = null;
+        }
+        
         const queryTypeCtx = queryTypeChartElement.getContext('2d');
         // 预定义的颜色数组，用于解析类型
         const queryTypeColors = ['#3498db', '#e74c3c', '#2ecc71', '#f39c12', '#9b59b6', '#1abc9c', '#d35400', '#34495e'];

static/js/memory-manager.js

@@ -0,0 +1,392 @@
+// memory-manager.js - 全局内存管理模块
+
+// 全局内存管理对象
+const memoryManager = {
+    // 缓存管理
+    caches: {
+        ipGeolocation: {
+            data: new Map(),
+            maxSize: 1000,
+            order: []
+        },
+        domainInfo: {
+            data: new Map(),
+            maxSize: 500
+        },
+        apiResponses: {
+            data: new Map(),
+            maxSize: 100,
+            ttl: 60000 // 1分钟过期
+        }
+    },
+    
+    // 资源管理
+    resources: {
+        timers: [],
+        eventListeners: [],
+        webSockets: [],
+        intervals: []
+    },
+    
+    // 内存监控
+    monitoring: {
+        enabled: true,
+        history: [],
+        maxHistory: 50,
+        threshold: 80 // 内存使用阈值（%）
+    },
+    
+    // 初始化
+    init() {
+        console.log('内存管理器初始化');
+        this.startMonitoring();
+        this.setupGlobalListeners();
+    },
+    
+    // 启动内存监控
+    startMonitoring() {
+        if (this.monitoring.enabled && performance && performance.memory) {
+            setInterval(() => {
+                this.checkMemoryUsage();
+            }, 30000); // 每30秒检查一次
+        }
+    },
+    
+    // 检查内存使用情况
+    checkMemoryUsage() {
+        if (!performance || !performance.memory) return;
+        
+        const memory = performance.memory;
+        const usage = {
+            timestamp: Date.now(),
+            used: Math.round(memory.usedJSHeapSize / 1024 / 1024 * 100) / 100, // MB
+            total: Math.round(memory.totalJSHeapSize / 1024 / 1024 * 100) / 100, // MB
+            limit: Math.round(memory.jsHeapSizeLimit / 1024 / 1024 * 100) / 100, // MB
+            usagePercent: Math.round((memory.usedJSHeapSize / memory.jsHeapSizeLimit) * 100 * 100) / 100 // %
+        };
+        
+        this.monitoring.history.push(usage);
+        
+        // 限制历史记录大小
+        if (this.monitoring.history.length > this.monitoring.maxHistory) {
+            this.monitoring.history.shift();
+        }
+        
+        // 内存使用过高时的处理
+        if (usage.usagePercent > this.monitoring.threshold) {
+            console.warn('内存使用过高:', usage);
+            this.triggerMemoryCleanup();
+        }
+        
+        console.log('内存使用情况:', usage);
+    },
+    
+    // 触发内存清理
+    triggerMemoryCleanup() {
+        console.log('触发内存清理...');
+        
+        // 清理缓存
+        this.cleanupCaches();
+        
+        // 清理未使用的资源
+        this.cleanupUnusedResources();
+    },
+    
+    // 清理缓存
+    cleanupCaches() {
+        // 清理IP地理位置缓存
+        this.cleanupCache('ipGeolocation');
+        
+        // 清理域名信息缓存
+        this.cleanupCache('domainInfo');
+        
+        // 清理API响应缓存
+        this.cleanupCache('apiResponses');
+    },
+    
+    // 清理特定缓存
+    cleanupCache(cacheName) {
+        const cache = this.caches[cacheName];
+        if (!cache) return;
+        
+        console.log(`清理${cacheName}缓存 - 当前大小: ${cache.data.size}`);
+        
+        // 清理超出大小限制的缓存
+        if (cache.data.size > cache.maxSize) {
+            if (cache.order && cache.order.length > 0) {
+                // 使用LRU策略
+                while (cache.data.size > cache.maxSize && cache.order.length > 0) {
+                    const oldestKey = cache.order.shift();
+                    if (oldestKey) {
+                        cache.data.delete(oldestKey);
+                    }
+                }
+            } else {
+                // 简单清理（适用于有TTL的缓存）
+                const now = Date.now();
+                for (const [key, value] of cache.data.entries()) {
+                    if (cache.data.size <= cache.maxSize) break;
+                    
+                    // 检查TTL
+                    if (cache.ttl && value.timestamp && (now - value.timestamp) > cache.ttl) {
+                        cache.data.delete(key);
+                    }
+                }
+                
+                // 如果仍然超出大小限制，删除最旧的项
+                if (cache.data.size > cache.maxSize) {
+                    const keys = Array.from(cache.data.keys());
+                    while (cache.data.size > cache.maxSize && keys.length > 0) {
+                        const oldestKey = keys.shift();
+                        cache.data.delete(oldestKey);
+                    }
+                }
+            }
+        }
+        
+        console.log(`清理后${cacheName}缓存大小: ${cache.data.size}`);
+    },
+    
+    // 清理未使用的资源
+    cleanupUnusedResources() {
+        // 清理定时器（这里主要是记录，实际清理需要在具体组件中进行）
+        console.log(`当前活动定时器数量: ${this.resources.timers.length}`);
+        console.log(`当前活动事件监听器数量: ${this.resources.eventListeners.length}`);
+        console.log(`当前活动WebSocket连接数量: ${this.resources.webSockets.length}`);
+        console.log(`当前活动间隔定时器数量: ${this.resources.intervals.length}`);
+    },
+    
+    // 添加缓存项
+    addCacheItem(cacheName, key, value) {
+        const cache = this.caches[cacheName];
+        if (!cache) return;
+        
+        // 检查缓存大小
+        if (cache.data.size >= cache.maxSize) {
+            this.cleanupCache(cacheName);
+        }
+        
+        // 添加到缓存
+        if (cache.ttl) {
+            cache.data.set(key, {
+                value,
+                timestamp: Date.now()
+            });
+        } else {
+            cache.data.set(key, value);
+        }
+        
+        // 更新访问顺序（用于LRU）
+        if (cache.order) {
+            // 移除现有的位置
+            const index = cache.order.indexOf(key);
+            if (index > -1) {
+                cache.order.splice(index, 1);
+            }
+            // 添加到末尾
+            cache.order.push(key);
+        }
+    },
+    
+    // 获取缓存项
+    getCacheItem(cacheName, key) {
+        const cache = this.caches[cacheName];
+        if (!cache) return null;
+        
+        const item = cache.data.get(key);
+        if (!item) return null;
+        
+        // 检查TTL
+        if (cache.ttl && item.timestamp && (Date.now() - item.timestamp) > cache.ttl) {
+            cache.data.delete(key);
+            return null;
+        }
+        
+        // 更新访问顺序（用于LRU）
+        if (cache.order) {
+            // 移除现有的位置
+            const index = cache.order.indexOf(key);
+            if (index > -1) {
+                cache.order.splice(index, 1);
+            }
+            // 添加到末尾
+            cache.order.push(key);
+        }
+        
+        return cache.ttl ? item.value : item;
+    },
+    
+    // 注册定时器
+    registerTimer(timerId) {
+        if (timerId) {
+            this.resources.timers.push(timerId);
+        }
+    },
+    
+    // 注销定时器
+    unregisterTimer(timerId) {
+        const index = this.resources.timers.indexOf(timerId);
+        if (index > -1) {
+            clearTimeout(timerId);
+            this.resources.timers.splice(index, 1);
+        }
+    },
+    
+    // 注册事件监听器
+    registerEventListener(element, event, handler) {
+        if (element && event && handler) {
+            this.resources.eventListeners.push({ element, event, handler });
+        }
+    },
+    
+    // 注销事件监听器
+    unregisterEventListener(element, event, handler) {
+        const index = this.resources.eventListeners.findIndex(item => 
+            item.element === element && item.event === event && item.handler === handler
+        );
+        if (index > -1) {
+            element.removeEventListener(event, handler);
+            this.resources.eventListeners.splice(index, 1);
+        }
+    },
+    
+    // 注册WebSocket连接
+    registerWebSocket(ws) {
+        if (ws) {
+            this.resources.webSockets.push(ws);
+        }
+    },
+    
+    // 注销WebSocket连接
+    unregisterWebSocket(ws) {
+        const index = this.resources.webSockets.indexOf(ws);
+        if (index > -1) {
+            try {
+                ws.close();
+            } catch (error) {
+                console.error('关闭WebSocket连接失败:', error);
+            }
+            this.resources.webSockets.splice(index, 1);
+        }
+    },
+    
+    // 注册间隔定时器
+    registerInterval(intervalId) {
+        if (intervalId) {
+            this.resources.intervals.push(intervalId);
+        }
+    },
+    
+    // 注销间隔定时器
+    unregisterInterval(intervalId) {
+        const index = this.resources.intervals.indexOf(intervalId);
+        if (index > -1) {
+            clearInterval(intervalId);
+            this.resources.intervals.splice(index, 1);
+        }
+    },
+    
+    // 清理所有资源
+    cleanupAllResources() {
+        console.log('清理所有资源...');
+        
+        // 清理定时器
+        this.resources.timers.forEach(timerId => {
+            clearTimeout(timerId);
+        });
+        this.resources.timers = [];
+        
+        // 清理事件监听器
+        this.resources.eventListeners.forEach(({ element, event, handler }) => {
+            try {
+                element.removeEventListener(event, handler);
+            } catch (error) {
+                console.error('移除事件监听器失败:', error);
+            }
+        });
+        this.resources.eventListeners = [];
+        
+        // 清理WebSocket连接
+        this.resources.webSockets.forEach(ws => {
+            try {
+                ws.close();
+            } catch (error) {
+                console.error('关闭WebSocket连接失败:', error);
+            }
+        });
+        this.resources.webSockets = [];
+        
+        // 清理间隔定时器
+        this.resources.intervals.forEach(intervalId => {
+            clearInterval(intervalId);
+        });
+        this.resources.intervals = [];
+        
+        // 清理缓存
+        this.cleanupCaches();
+        
+        console.log('所有资源已清理');
+    },
+    
+    // 设置全局监听器
+    setupGlobalListeners() {
+        // 页面卸载时清理所有资源
+        window.addEventListener('beforeunload', () => {
+            this.cleanupAllResources();
+        });
+        
+        // 页面可见性变化时的处理
+        document.addEventListener('visibilitychange', () => {
+            if (document.hidden) {
+                // 页面隐藏时清理一些资源
+                console.log('页面隐藏，清理资源...');
+                this.cleanupCaches();
+            }
+        });
+    },
+    
+    // 获取内存使用统计
+    getStats() {
+        if (this.monitoring.history.length === 0) {
+            return null;
+        }
+        
+        const recent = this.monitoring.history[this.monitoring.history.length - 1];
+        const avg = this.monitoring.history.reduce((sum, item) => sum + item.used, 0) / this.monitoring.history.length;
+        const max = Math.max(...this.monitoring.history.map(item => item.used));
+        const min = Math.min(...this.monitoring.history.map(item => item.used));
+        
+        return {
+            recent,
+            avg: Math.round(avg * 100) / 100,
+            max: Math.round(max * 100) / 100,
+            min: Math.round(min * 100) / 100,
+            history: this.monitoring.history,
+            caches: {
+                ipGeolocation: this.caches.ipGeolocation.data.size,
+                domainInfo: this.caches.domainInfo.data.size,
+                apiResponses: this.caches.apiResponses.data.size
+            },
+            resources: {
+                timers: this.resources.timers.length,
+                eventListeners: this.resources.eventListeners.length,
+                webSockets: this.resources.webSockets.length,
+                intervals: this.resources.intervals.length
+            }
+        };
+    }
+};
+
+// 导出内存管理器
+if (typeof module !== 'undefined' && module.exports) {
+    module.exports = memoryManager;
+} else {
+    window.memoryManager = memoryManager;
+}
+
+// 自动初始化
+if (typeof window !== 'undefined') {
+    window.addEventListener('DOMContentLoaded', () => {
+        memoryManager.init();
+    });
+}