optimze home page and product page

backend/product/views.py

@@ -92,24 +92,41 @@ class AllCategoriesV2(APIView):
         },
     )
     def get(self, request):
+        from django.core.cache import cache
+        
+        # Check cache first
+        cache_key = 'all_categories_v2'
+        cached_data = cache.get(cache_key)
+        if cached_data:
+            return Response(cached_data, status=status.HTTP_200_OK)
+        
         # Optimize query with prefetch_related to avoid N+1 queries
         unit_categories = UnitCategoryModel.objects.prefetch_related(
             Prefetch(
                 'maincategorys',
-                queryset=MainCategoryModel.objects.prefetch_related(
+                queryset=MainCategoryModel.objects.only(
+                    'id', 'name', 'slug', 'icon', 'meta_title', 'meta_description', 'image', 'video'
+                ).prefetch_related(
                     Prefetch(
                         'subcategorys',
-                        queryset=SubCategoryModel.objects.annotate(
+                        queryset=SubCategoryModel.objects.only(
+                            'id', 'name', 'slug', 'icon', 'meta_title', 'meta_description', 'image', 'parent_id'
+                        ).annotate(
                             product_count=Count('products')
                         )
                     )
                 )
             )
-        ).all()
+        ).only('id', 'name', 'slug', 'icon', 'meta_title', 'meta_description', 'image').all()
 
         categories_ser = self.serializer_class(
             instance=unit_categories, many=True, context={'request': request})
-        return Response(categories_ser.data, status=status.HTTP_200_OK)
+        
+        response_data = categories_ser.data
+        # Cache for 10 minutes
+        cache.set(cache_key, response_data, 60 * 10)
+        
+        return Response(response_data, status=status.HTTP_200_OK)
 
 
 class ProductView(APIView):