Django中间件限制用户访问频率

原：https://blog.csdn.net/weixin_38748717/article/details/79095399

一、定义限制访问频率的中间件

• common/middleware.py

import time

from django.utils.deprecation import MiddlewareMixin

MAX_REQUEST_PER_SECOND=2 #每秒访问次数

class RequestBlockingMiddleware(MiddlewareMixin):

def process_request(self,request):
now=time.time()
request_queue = request.session.get('request_queue',[])
if len(request_queue) < MAX_REQUEST_PER_SECOND:
request_queue.append(now)
request.session['request_queue']=request_queue
else:
time0=request_queue[0]
if (now-time0)<1:
time.sleep(5)

request_queue.append(time.time())
request.session['request_queue']=request_queue[1:]

二、将中间件加入配置文件

• setting.py

MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'common.middleware.RequestBlockingMiddleware', #在sessions之后，auth之前
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]