perf(core): 资产/通知「取全部」改大页+并行,根治每次刷新串十几个请求

资产接口原固定 20/页且不支持 page_size,前端 allAssets 逐页串行翻完(190 资产=10 个
串行请求,每个 0.5~1.7s 依次等)→ 整页刷新好几秒。
- 后端:AssetViewSet 加 AssetPagination(page_size_query_param,上限 200)
- 前端:allAssets/allNotifications 改「首页大页(200/100)+ 剩余页 Promise.all 并行」
资产 ≤200 时 1 个请求取全;再多也并行不串行。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/backend/apps/assets/views.py

@@ -6,6 +6,7 @@ from django.db import transaction
 from django.http import StreamingHttpResponse
 from rest_framework import status
 from rest_framework.decorators import action
+from rest_framework.pagination import PageNumberPagination
 from rest_framework.parsers import FormParser, MultiPartParser
 from rest_framework.response import Response
 from rest_framework.views import APIView
@@ -18,9 +19,18 @@ from .serializers import AssetSerializer, AssetUploadSerializer
 from .storage import TosStorage
 
 
+class AssetPagination(PageNumberPagination):
+    """允许前端用 ?page_size= 覆盖(默认 20,上限 200)。前端「取全部资产」一次大页拉完,
+    不再逐页串行(原来 20/页 → 资产多时每次刷新要串十几个请求,整页很慢)。"""
+
+    page_size_query_param = "page_size"
+    max_page_size = 200
+
+
 class AssetViewSet(TeamScopedViewSetMixin, ModelViewSet):
     queryset = Asset.objects.prefetch_related("files").all()
     serializer_class = AssetSerializer
+    pagination_class = AssetPagination
     search_fields = ["name", "description"]
     ordering_fields = ["created_at", "updated_at", "name"]
 

core/frontend/src/api.ts

@@ -373,13 +373,21 @@ export const api = {
   // 跟随 DRF 分页 next 取全部资产 —— 商品图/AI 素材/资产库都靠 asset.id 在这份列表里查 preview_url,
   // 只取第 1 页(20 条)会让第 20 条之后的资产解析不到图、渲染成空占位。
   async allAssets(): Promise<Asset[]> {
-    const out: Asset[] = [];
-    let path = "/api/assets/";
-    for (let guard = 0; guard < 50 && path; guard += 1) {
-      const page: Paginated<Asset> = await request<Paginated<Asset>>(path);
-      out.push(...page.results);
-      path = page.next ? new URL(page.next).pathname + new URL(page.next).search : "";
-    }
+    // 一次大页(page_size=200)尽量取全;若还有多页,并行取剩余页(不再逐页串行等,根治整页刷新慢)
+    const SIZE = 200;
+    const first = await request<Paginated<Asset>>(`/api/assets/?page_size=${SIZE}`);
+    const out: Asset[] = [...first.results];
+    const pageSize = first.results.length || SIZE; // 后端若忽略 page_size,按实际页大小算页数,逻辑仍正确
+    const totalPages = pageSize > 0 ? Math.ceil((first.count || out.length) / pageSize) : 1;
+    if (totalPages <= 1) return out;
+    const rest = await Promise.all(
+      Array.from({ length: totalPages - 1 }, (_, i) =>
+        request<Paginated<Asset>>(`/api/assets/?page_size=${SIZE}&page=${i + 2}`)
+          .then((p) => p.results)
+          .catch(() => [] as Asset[])
+      )
+    );
+    rest.forEach((r) => out.push(...r));
     return out;
   },
   uploadAsset(formData: FormData) {
@@ -423,18 +431,23 @@ export const api = {
   },
   // 跟着 next 把所有消息取全(给侧边栏徽标 + 团队动态用,不参与收件箱滚动渲染),与 allAssets 同套路
   async allNotifications(): Promise<NotificationList> {
-    const out: Notification[] = [];
-    let path = "/api/ops/notifications/?page_size=100";
-    let unreadCount = 0;
-    let typeCounts: NotificationList["type_counts"];
-    for (let guard = 0; guard < 100 && path; guard += 1) {
-      const page = await request<NotificationList>(path);
-      out.push(...page.results);
-      unreadCount = page.unread_count;
-      typeCounts = page.type_counts ?? typeCounts;
-      path = page.next ? new URL(page.next).pathname + new URL(page.next).search : "";
+    // 首页拿计数,剩余页并行(原串行逐页:消息多时侧边栏徽标加载也拖慢整页)
+    const SIZE = 100;
+    const first = await request<NotificationList>(`/api/ops/notifications/?page_size=${SIZE}`);
+    const out: Notification[] = [...first.results];
+    const pageSize = first.results.length || SIZE;
+    const totalPages = pageSize > 0 ? Math.ceil((first.count || out.length) / pageSize) : 1;
+    if (totalPages > 1) {
+      const rest = await Promise.all(
+        Array.from({ length: totalPages - 1 }, (_, i) =>
+          request<NotificationList>(`/api/ops/notifications/?page_size=${SIZE}&page=${i + 2}`)
+            .then((p) => p.results)
+            .catch(() => [] as Notification[])
+        )
+      );
+      rest.forEach((r) => out.push(...r));
     }
-    return { count: out.length, next: null, previous: null, results: out, unread_count: unreadCount, type_counts: typeCounts };
+    return { count: out.length, next: null, previous: null, results: out, unread_count: first.unread_count, type_counts: first.type_counts };
   },
   markAllNotificationsRead() {
     return request<{ updated: number; unread_count: number }>("/api/ops/notifications/mark-all-read/", {