perf: 实时监控性能优化

- 后端：车辆关联信息缓存5分钟、两库并行查询、支持服务端
  筛选/排序/分页（默认返回100条）
- 前端：筛选和排序参数传给后端，不再加载全量数据
- 筛选选项（部门/客户/车牌）仅首次加载获取

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/modules/mileage/MonitoringView.tsx

@@ -106,14 +106,43 @@ export default function MonitoringView() {
   const [filterRegionCode, setFilterRegionCode] = useState('All');
   const [filterMileageRange, setFilterMileageRange] = useState({ min: '', max: '' });
 
-  const [allVehicles, setAllVehicles] = useState<MonitoringVehicle[]>([]);
+  const [filteredVehicles, setFilteredVehicles] = useState<MonitoringVehicle[]>([]);
+  const [totalCount, setTotalCount] = useState(0);
+  const [departments, setDepartments] = useState<string[]>([]);
+  const [plateNumbers, setPlateNumbers] = useState<string[]>([]);
+  const [projects, setProjects] = useState<string[]>([]);
 
+  // 加载筛选选项（仅首次，用轻量请求）
   useEffect(() => {
-    const load = () => fetchMonitoring().then(d => setAllVehicles(d.vehicles)).catch(() => {});
+    fetchMonitoring({ limit: 2000 }).then(d => {
+      const depts = Array.from(new Set(d.vehicles.map(v => v.department).filter(Boolean))) as string[];
+      const plates = Array.from(new Set(d.vehicles.map(v => v.plate).filter(Boolean)));
+      const custs = Array.from(new Set(d.vehicles.map(v => v.customer).filter(Boolean))) as string[];
+      setDepartments(depts);
+      setPlateNumbers(plates);
+      setProjects(custs);
+    }).catch(() => {});
+  }, []);
+
+  // 加载数据（带服务端筛选/排序/分页）
+  useEffect(() => {
+    const load = () => {
+      fetchMonitoring({
+        sortBy,
+        sortOrder,
+        limit: 100,
+        search: searchTerm || undefined,
+        dept: filterDept !== 'All' ? filterDept : undefined,
+        customer: filterProject !== 'All' ? filterProject : undefined,
+      }).then(d => {
+        setFilteredVehicles(d.vehicles);
+        setTotalCount(d.total);
+      }).catch(() => {});
+    };
     load();
     const interval = setInterval(load, 60000);
     return () => clearInterval(interval);
-  }, []);
+  }, [sortBy, sortOrder, searchTerm, filterDept, filterProject]);
 
   const toggleFullscreen = () => {
     if (!isFullscreen) {
@@ -129,34 +158,6 @@ export default function MonitoringView() {
     setIsFullscreen(!isFullscreen);
   };
 
-  const filteredVehicles = useMemo(() => {
-    return allVehicles.filter(v => {
-      const matchesSearch = v.plate.toLowerCase().includes(searchTerm.toLowerCase()) ||
-                           (v.customer || '').toLowerCase().includes(searchTerm.toLowerCase());
-      const matchesDept = filterDept === 'All' || v.department === filterDept;
-      const matchesPlate = filterPlate === 'All' || v.plate === filterPlate;
-      const matchesProject = filterProject === 'All' || v.customer === filterProject;
-      const matchesEntity = filterEntity === 'All' || true;
-      const matchesRegion = filterRegionCode === 'All' || true;
-
-      // Mileage range filter
-      const mileage = v.dailyKm || 0;
-      const minMileage = filterMileageRange.min === '' ? -Infinity : Number(filterMileageRange.min);
-      const maxMileage = filterMileageRange.max === '' ? Infinity : Number(filterMileageRange.max);
-      const matchesMileage = mileage >= minMileage && mileage <= maxMileage;
-
-      return matchesSearch && matchesDept && matchesPlate && matchesProject && matchesEntity && matchesRegion && matchesMileage;
-    }).sort((a, b) => {
-      const valA = sortBy === 'today' ? (a.dailyKm || 0) : (a.totalKm || 0);
-      const valB = sortBy === 'today' ? (b.dailyKm || 0) : (b.totalKm || 0);
-      return sortOrder === 'desc' ? valB - valA : valA - valB;
-    });
-  }, [allVehicles, searchTerm, filterDept, sortBy, sortOrder, filterPlate, filterProject, filterEntity, filterRegionCode, filterMileageRange]);
-
-  const departments = Array.from(new Set(allVehicles.map(v => v.department).filter(Boolean))) as string[];
-  const plateNumbers = Array.from(new Set(allVehicles.map(v => v.plate).filter(Boolean)));
-  const projects = Array.from(new Set(allVehicles.map(v => v.customer).filter(Boolean))) as string[];
-
   const stats = useMemo(() => {
     const totalToday = filteredVehicles.reduce((sum, v) => sum + (v.dailyKm || 0), 0);
     const totalAll = filteredVehicles.reduce((sum, v) => sum + (v.totalKm || 0), 0);
@@ -164,8 +165,8 @@ export default function MonitoringView() {
     const activeTotal = sortBy === 'today' ? totalToday : totalAll;
     const activeAvg = filteredVehicles.length > 0 ? activeTotal / filteredVehicles.length : 0;
 
-    return { totalToday, totalAll, activeTotal, activeAvg, count: filteredVehicles.length };
+    return { totalToday, totalAll, activeTotal, activeAvg, count: totalCount };
-  }, [filteredVehicles, sortBy]);
+  }, [filteredVehicles, sortBy, totalCount]);
 
   return (
     <>

src/modules/mileage/api.ts

@@ -8,8 +8,25 @@ async function fetchJson<T>(url: string): Promise<T> {
   return res.json();
 }
 
-export async function fetchMonitoring(): Promise<MonitoringData> {
+export async function fetchMonitoring(params?: {
-  return fetchJson<MonitoringData>(`${BASE}/monitoring`);
+  sortBy?: string;
+  sortOrder?: string;
+  limit?: number;
+  offset?: number;
+  search?: string;
+  dept?: string;
+  customer?: string;
+}): Promise<MonitoringData> {
+  const query = new URLSearchParams();
+  if (params?.sortBy) query.set('sortBy', params.sortBy);
+  if (params?.sortOrder) query.set('sortOrder', params.sortOrder);
+  if (params?.limit) query.set('limit', String(params.limit));
+  if (params?.offset) query.set('offset', String(params.offset));
+  if (params?.search) query.set('search', params.search);
+  if (params?.dept) query.set('dept', params.dept);
+  if (params?.customer) query.set('customer', params.customer);
+  const qs = query.toString();
+  return fetchJson<MonitoringData>(`${BASE}/monitoring${qs ? `?${qs}` : ''}`);
 }
 
 export async function fetchTargets(): Promise<TargetSummary[]> {

src/modules/mileage/types.ts

@@ -13,6 +13,7 @@ export interface MonitoringVehicle {
 
 export interface MonitoringData {
   vehicles: MonitoringVehicle[];
+  total: number;
   updatedAt: string;
 }
 

src/server/routes/mileage.ts

@@ -18,41 +18,64 @@ LEFT JOIN tab_user u ON u.id = c.bd AND u.is_deleted = 0
 LEFT JOIN tab_department dep ON dep.id = u.dep_id AND dep.is_deleted = 0
 WHERE truck.is_deleted = 0 AND truck.is_operation = 1`;
 
+// 车辆关联信息缓存（5分钟过期）
+let vehicleInfoCache: { data: Map<string, any>; expiry: number } | null = null;
+const CACHE_TTL = 5 * 60 * 1000;
+
+async function getVehicleInfoMap(): Promise<Map<string, any>> {
+  const now = Date.now();
+  if (vehicleInfoCache && now < vehicleInfoCache.expiry) {
+    return vehicleInfoCache.data;
+  }
+  const [rows] = await pool.execute(VEHICLE_INFO_SQL) as any;
+  const map = new Map<string, any>();
+  for (const row of rows) {
+    map.set(row.plate, row);
+  }
+  vehicleInfoCache = { data: map, expiry: now + CACHE_TTL };
+  return map;
+}
+
 // GET /monitoring — 实时监控数据
 app.get('/monitoring', async (c) => {
   try {
-    // 1. 从 hydrogen_energy 取最新日期的里程数据
+    const sortBy = c.req.query('sortBy') || 'today';
+    const sortOrder = c.req.query('sortOrder') || 'desc';
+    const limit = Number(c.req.query('limit')) || 100;
+    const offset = Number(c.req.query('offset')) || 0;
+    const search = c.req.query('search') || '';
+    const dept = c.req.query('dept') || '';
+    const customer = c.req.query('customer') || '';
+
+    // 并行查询两个数据库
+    const [mileageResult, infoMap] = await Promise.all([
+      (async () => {
         const [dateRows] = await mileagePool.execute(
           'SELECT MAX(stat_date) as latest FROM v_vehicle_daily_stats'
         ) as any;
         const latestDate = dateRows[0]?.latest;
-    if (!latestDate) return c.json({ vehicles: [], updatedAt: new Date().toISOString() });
+        if (!latestDate) return [];
-
+        const [rows] = await mileagePool.execute(
-    const [mileageRows] = await mileagePool.execute(
           `SELECT plate, vin, daily_km, total_km, source
-       FROM v_vehicle_daily_stats
+           FROM v_vehicle_daily_stats WHERE stat_date = ?`,
-       WHERE stat_date = ?`,
           [latestDate]
         ) as any;
+        return rows;
+      })(),
+      getVehicleInfoMap(),
+    ]);
 
-    // 对于同一 plate 可能有多条记录（不同 source），取 daily_km 最大的
+    // 去重：同一 plate 取 daily_km 最大的
     const mileageMap = new Map<string, any>();
-    for (const row of mileageRows) {
+    for (const row of mileageResult) {
       const existing = mileageMap.get(row.plate);
       if (!existing || Number(row.daily_km) > Number(existing.daily_km)) {
         mileageMap.set(row.plate, row);
       }
     }
 
-    // 2. 从 lingniu_prod 取车辆关联信息
+    // 合并 + 筛选
-    const [infoRows] = await pool.execute(VEHICLE_INFO_SQL) as any;
+    let vehicles = Array.from(mileageMap.values()).map((m: any) => {
-    const infoMap = new Map<string, any>();
-    for (const row of infoRows) {
-      infoMap.set(row.plate, row);
-    }
-
-    // 3. 合并
-    const vehicles = Array.from(mileageMap.values()).map((m: any) => {
       const info = infoMap.get(m.plate);
       const dailyKm = Number(m.daily_km) || 0;
       const source = m.source || 'NONE';
@@ -70,10 +93,33 @@ app.get('/monitoring', async (c) => {
       };
     });
 
-    return c.json({ vehicles, updatedAt: new Date().toISOString() });
+    // 服务端筛选
+    if (search) {
+      const q = search.toLowerCase();
+      vehicles = vehicles.filter(v =>
+        v.plate.toLowerCase().includes(q) ||
+        (v.customer || '').toLowerCase().includes(q)
+      );
+    }
+    if (dept) vehicles = vehicles.filter(v => v.department === dept);
+    if (customer) vehicles = vehicles.filter(v => v.customer === customer);
+
+    const total = vehicles.length;
+
+    // 服务端排序
+    vehicles.sort((a, b) => {
+      const valA = sortBy === 'today' ? a.dailyKm : (a.totalKm || 0);
+      const valB = sortBy === 'today' ? b.dailyKm : (b.totalKm || 0);
+      return sortOrder === 'desc' ? valB - valA : valA - valB;
+    });
+
+    // 分页
+    const paged = vehicles.slice(offset, offset + limit);
+
+    return c.json({ vehicles: paged, total, updatedAt: new Date().toISOString() });
   } catch (e) {
     console.error('monitoring error:', e);
-    return c.json({ vehicles: [], updatedAt: new Date().toISOString() }, 500);
+    return c.json({ vehicles: [], total: 0, updatedAt: new Date().toISOString() }, 500);
   }
 });