Django 对IP访问频率进行限制的例子

REST_FRAMEWORK = {   'DEFAULT_PARSER_CLASSES': (    'rest_framework.parsers.JSONParser',    'rest_framework.parsers.FormParser',    'rest_framework.parsers.MultiPartParser',  ),  'DEFAULT_AUTHENTICATION_CLASSES': (    # 'lecare.core.rest_auth.CrossSiteSessionAuthentication',  ),  'DEFAULT_PERMISSION_CLASSES': [    # 'rest_framework.permissions.IsAuthenticated',    'rest_framework.permissions.AllowAny',  ],  'PAGE_SIZE': 20,  'UNICODE_JSON': False,  # 'COERCE_DECIMAL_TO_STRING': False,  # 'EXCEPTION_HANDLER': 'lecare.core.custom_exception_handler.custom_exception_handler',  'JWT_EXPIRATION_DELTA': datetime.timedelta(hours = 2),  'JWT_REFRESH_EXPIRATION_DELTA': datetime.timedelta(days = 360),  'JWT_ALLOW_REFRESH': False,  'JWT_AUTH_HEADER_PREFIX': 'JWT',  'JWT_PAYLOAD_HANDLER': 'consumer.jwt_conf.jwt_payload_handler',  'JWT_RESPONSE_PAYLOAD_HANDLER': 'consumer.jwt_conf.jwt_response_payload_handler',  'JWT_GET_USER_SECRET_KEY': 'consumer.jwt_conf.jwt_get_secret_key',  # 'DEFAULT_THROTTLE_CLASSES': (  #   # 开启匿名用户接口请求频率限制  #   'rest_framework.throttling.AnonRateThrottle',  #   # 开启授权用户接口请求频率限制  #   'rest_framework.throttling.UserRateThrottle'  # ),  # 'DEFAULT_THROTTLE_RATES': {  #   # 频率限制有second, minute, hour, day  #   # 匿名用户请求频率  #   'anon': '30/second',  #   # 授权用户请求频率  #   'user': '30/second'  # }}

import timefrom django.utils.deprecation import MiddlewareMixinMAX_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:]#启用RequestBlocking中间件IDDLEWARE = [  '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',]