Django + Redis实现页面缓存

目的：把从数据库读出的数据存入的redis 中既提高了效率，又减少了对数据库的读写，提高用户体验。

例如：

1，同一页面局部缓存，局部动态

from django.views import View
from myapp.models import Student
#导入缓存库
from django.core.cache import cache
#导入页面缓存
from django.views.decorators.cache import cache_page
from django.utils.decorators import method_decorator

class Stulist(View):
    def get(self,request,id):
        #判断缓存内是否有数据
        result = cache.get("res",'')
        if result == '':
            res = Student.objects.filter(id=id)
            cache.set("res",res,100)
            result =cache.get("res")
        # ret = Student.objects.all()
        # ret = [i.name for i in list(ret)]
        # random_name = random.sample(ret,3)
        #随机取一条 select * from student where id in(2,3) order by rand limit 1
       #取非当前数据外三条数据随机展示
        random_name = Student.objects.exclude(id__in=[id]).order_by("?")[0:3]
        return render(request,'stulist.html',locals())

2，页面缓存

@cache_page(60)
def page_cache(request):
    res = Student.objects.all()

    return render(request,'pagecache.html',locals())

@method_decorator(cache_page(60),name="get")
class PageCache(View):

    def get(self,request):
        res = Student.objects.all()

        return render(request,'pagecache.html',locals())