text: from django.shortcuts import render
  import time
  from django.views.decorators.cache import cache_page
  from django.http import HttpResponse
  
  def index_view(request):
      return render(request, 'index/index.html')
  
  @cache_page
  def test_cache(request):
      t = time.time()
      return HttpResponse('t is %s'%(t))