refactor(monitoring, public): remove recent requests tracking and update metrics display

- Removed the RecentRequests field from SystemMetrics and its associated logic in LogRequest to streamline metrics collection.
- Updated the HTML to eliminate the recent requests section, focusing on the top referers display for improved performance and clarity.
- Enhanced the overall metrics presentation by ensuring only relevant data is displayed, contributing to a cleaner user interface.

monitoring/metrics.go

@@ -39,9 +39,6 @@ type SystemMetrics struct {
 	// 路径延迟统计
 	PathLatencies map[string]float64 `json:"path_latencies"`
 
-	// 最近请求
-	RecentRequests []RequestLog `json:"recent_requests"`
-
 	// 热门引用来源
 	TopReferers map[string]int64 `json:"top_referers"`
 
@@ -76,7 +73,6 @@ func init() {
 	metrics.StatusCodes = make(map[int]int64)
 	metrics.PathLatencies = make(map[string]float64)
 	metrics.TopReferers = make(map[string]int64)
-	metrics.RecentRequests = make([]RequestLog, 0, 100)
 }
 
 func CollectMetrics() *SystemMetrics {
@@ -103,11 +99,6 @@ func CollectMetrics() *SystemMetrics {
 func LogRequest(log RequestLog) {
 	metrics.RequestCount.Add(1)
 
-	// 使用分段锁减少锁竞争
-	bucket := getBucket(log.Path)
-	bucket.mu.Lock()
-	defer bucket.mu.Unlock()
-
 	mu.Lock() // 添加全局锁保护 map 写入
 	metrics.StatusCodes[log.StatusCode]++
 
@@ -130,14 +121,6 @@ func LogRequest(log RequestLog) {
 		}
 		mu.Unlock()
 
-		// 保存最近请求记录
-		mu.Lock() // 保护 RecentRequests
-		metrics.RecentRequests = append([]RequestLog{log}, metrics.RecentRequests...)
-		if len(metrics.RecentRequests) > 100 {
-			metrics.RecentRequests = metrics.RecentRequests[:100]
-		}
-		mu.Unlock()
-
 		// 更新平均延迟
 		count := metrics.RequestCount.Load()
 		if count > 1 {

public/index.html

@@ -229,28 +229,6 @@
                 return `${(microseconds/1000000).toFixed(3)}s`;
             }
 
-            // 最近请求
-            const recentRequestsHtml = metrics.recent_requests.map(req => `
-                <tr>
-                    <td>${new Date(req.time).toLocaleString()}</td>
-                    <td>${req.path}</td>
-                    <td>${req.method}</td>
-                    <td>${req.status_code}</td>
-                    <td>${formatLatency(req.latency)}</td>
-                </tr>
-            `).join('');
-
-            // 热门引用来源
-            const topReferersHtml = Object.entries(metrics.top_referers)
-                .sort(([, a], [, b]) => b - a)
-                .slice(0, 10)
-                .map(([referer, count]) => `
-                    <div class="referer-item">
-                        <span class="referer">${referer}</span>
-                        <span class="count">${count}</span>
-                    </div>
-                `).join('');
-
             const metricsHtml = `
                 <div class="metrics-container">
                     <div class="metrics-section">
@@ -292,30 +270,18 @@
                         </div>
                     </div>
                     
-                    <div class="metrics-section">
-                        <h3>最近请求</h3>
-                        <div class="recent-requests">
-                            <table>
-                                <thead>
-                                    <tr>
-                                        <th>时间</th>
-                                        <th>路径</th>
-                                        <th>方法</th>
-                                        <th>状态</th>
-                                        <th>延迟</th>
-                                    </tr>
-                                </thead>
-                                <tbody>
-                                    ${recentRequestsHtml}
-                                </tbody>
-                            </table>
-                        </div>
-                    </div>
-                    
                     <div class="metrics-section">
                         <h3>热门引用来源</h3>
                         <div class="top-referers">
-                            ${topReferersHtml}
+                            ${Object.entries(metrics.top_referers)
+                                .sort(([, a], [, b]) => b - a)
+                                .slice(0, 10)
+                                .map(([referer, count]) => `
+                                    <div class="referer-item">
+                                        <span class="referer">${referer}</span>
+                                        <span class="count">${count}</span>
+                                    </div>
+                                `).join('')}
                         </div>
                     </div>
                 </div>