接口缓存

接口缓存

视图模块:home/views.py

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

# 访问量大,且数据较固定的接口,建议建立接口缓存
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

    # 缓存有,走缓存,缓存没有走数据库
    def list(self, request, *args, **kwargs):
        banner_data = cache.get('banner_list')
        if not banner_data:
            print('走数据库')
            response = super().list(request, *args, **kwargs)
            banner_data = response.data
            # 建立缓存,不建议设置缓存过期时间,用celery等框架后台异步更新缓存即可
            cache.set('banner_list', banner_data)
        return Response(banner_data)
posted @ 2019-10-31 23:03  suwanbin_thought  阅读(968)  评论(0编辑  收藏  举报