我在为我的应用引擎应用程序在浏览器中缓存图像时遇到了一点问题 我发送最后修改、过期和缓存控制 header ,但图像每次都是从服务器加载的。 这是代码的标题部分:
response['Content-Type'] = '图片/jpg'
response['Last-Modified'] = current_time.strftime('%a, %d %b %Y %H:%M:%S GMT')
response['Expires'] = current_time + timedelta(days=30)
response['Cache-Control'] = 'public, max-age=2592000'
最佳答案
这是我在 dpaste 中修复副本的示例代码 here
def view_image(request, key):
data = memcache.get(key)
if data is not None:
if(request.META.get('HTTP_IF_MODIFIED_SINCE') >= data['Last-Modified']):
data.status_code = 304
return data
else:
image_content_blob = #some code to get the image from the data store
current_time = datetime.utcnow()
response = HttpResponse()
last_modified = current_time - timedelta(days=1)
response['Content-Type'] = 'image/jpg'
response['Last-Modified'] = last_modified.strftime('%a, %d %b %Y %H:%M:%S GMT')
response['Expires'] = current_time + timedelta(days=30)
response['Cache-Control'] = 'public, max-age=315360000'
response['Date'] = current_time
response.content = image_content_blob
memcache.add(image_key, response, 86400)
return response
关于python - 浏览器中的图像缓存 - app-engine-patch 应用程序,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2185449/