中间件控制访问评率

MIDDLEWARE = [
    ‘django.middleware.security.SecurityMiddleware‘,
    ‘django.contrib.sessions.middleware.SessionMiddleware‘,
    ‘django.middleware.common.CommonMiddleware‘,
    ‘django.middleware.csrf.CsrfViewMiddleware‘,
    ‘django.contrib.auth.middleware.AuthenticationMiddleware‘,
    ‘django.contrib.messages.middleware.MessageMiddleware‘,
    ‘django.middleware.clickjacking.XFrameOptionsMiddleware‘,
    ‘mymiddleware.s1.Throttle‘,  # 自定义中间件
]
ACCESS_LIMIT = 10

from django.conf import settings

ACCESS_RECORD = {}

# 自定义访问频率限制的中间件
class Throttle(MiddlewareMixin):

    def process_request(self, request):
        access_limit = settings.ACCESS_LIMIT if hasattr(settings, ‘ACCESS_LIMIT‘) else 60
        # 当前请求的IP地址
        ip = request.META.get(‘REMOTE_ADDR‘)
        if ip not in ACCESS_RECORD:
            ACCESS_RECORD[ip] = []
        history = ACCESS_RECORD[ip]
        # 判断最近的10秒钟之内这个IP访问次数是否大于3
        now = time.time()
        # DRF 访问频率限制
        while history and now - history[-1] > access_limit:
            history.pop()

        history.insert(0, now)

        if len(history) > 3:
            return HttpResponse(‘滚‘)