接口緩存

目錄

• 接口緩存
  • 視圖模塊：home/views.py

接口緩存

視圖模塊：home/views.py

from rest_framework.generics import ListAPIView
from . import models, serializers
from settings.const import BANNER_COUNT

# 訪問量大，且數據較固定的接口，建議創建接口緩存
from django.core.cache import cache
from rest_framework.response import Response
class BannerListAPIView(ListAPIView):
    queryset = models.Banner.objects.filter(is_delete=False, is_show=True).order_by('-orders')[:BANNER_COUNT]
    serializer_class = serializers.BannerModelSerializer

    # 緩存有，走緩存，緩存沒有走數據庫
    def list(self, request, *args, **kwargs):
        banner_data = cache.get('banner_list')
        if not banner_data:
            print('走數據庫')
            response = super().list(request, *args, **kwargs)
            banner_data = response.data
            # 創建緩存，不建議設置緩存過時時間，用celery等框架後臺異步更新緩存便可
            cache.set('banner_list', banner_data)
        return Response(banner_data)