增加API

http/server.go

@@ -87,10 +87,27 @@ func (s *Server) handleStats(w http.ResponseWriter, r *http.Request) {
 	dnsStats := s.dnsServer.GetStats()
 	shieldStats := s.shieldManager.GetStats()
 
+	// 获取最常用查询类型
+	topQueryType := "A"
+	maxCount := int64(0)
+	for queryType, count := range dnsStats.QueryTypes {
+		if count > maxCount {
+			maxCount = count
+			topQueryType = queryType
+		}
+	}
+
+	// 获取活跃来源IP数量
+	activeIPCount := len(dnsStats.SourceIPs)
+
 	stats := map[string]interface{}{
-		"dns":    dnsStats,
-		"shield": shieldStats,
-		"time":   time.Now(),
+		"dns":              dnsStats,
+		"shield":           shieldStats,
+		"topQueryType":     topQueryType,
+		"activeIPs":        activeIPCount,
+		"avgResponseTime":  dnsStats.AvgResponseTime,
+		"cpuUsage":         dnsStats.CpuUsage,
+		"time":             time.Now(),
 	}
 
 	w.Header().Set("Content-Type", "application/json")