rest_framework-節流-總結完結篇

列表從後往前讀#1.在request中獲取IP#2.訪問記錄VISIT_RECORD = {}  放緩存 數據庫 均可以 建議緩存import timeclass VisitThrottle(object):    """10s內只能訪問3次"""    def __init__(self):        self.history = None    def allow_request(self, request, view):    #1.在request中獲取IP    #2.訪問記錄        #remote_addr = request._request.META.get('REMOTE_ADDR')        remote_addr = request.META.get("REMOTE_ADDR")  #均可以        ctime = time.time()        if remote_addr not in VISIT_RECORD:            VISIT_RECORD[remote_addr] = [ctime,]        history = VISIT_RECORD.get(remote_addr)        self.history = history        while history and history[-1] < ctime - 10:            history.pop()        if len(history) < 3:            history.insert(0, ctime)            return True        return True #表示能夠繼續訪問        #return False #訪問頻率過高，被限制    def wait(self):    """還須要等多少秒"""        ctime = time.time()        data = 60 - (ctime - self.history[-1])        return datathrottle_classes = [VisitThrottle,]#全局配置REST_FRAMEWORK = {    "DEFAULT_THROTTLE_CLASSES":['api.utils.throttle.VisitThrottle']}源碼流程    check_throttles    self.get_throttles內置函數from rest_framework.throttling import BaseThrottleclass BaseThrottle(object):    def allow_request(self,request, view)  #由這個函數進行觸發    def get_ident(self,request):    def wait(self):到時可使用SimpleRateThrottlefrom rest_framework.throttling import SimpleRateThrottleclass VisiThrottle(SimpleRateThrottle):    scope = "xiao" #當KEY使用 當在setting設置DEFAULT_THROTTLE_RATES : {"xiao":'3/m'}  m分 h時 d天    def get_cache_key(self, request, view):        return request.META.get("REMOTE_ADDR")class VIPThrottle(SimpleRateThrottle):    scope = "vip" #當KEY使用 當在setting設置DEFAULT_THROTTLE_RATES : {"xiao":'3/m'}  m分 h時 d天    def get_cache_key(self, request, view):        return request.user.username  #認證時的對象的usernameSettings裏面添加REST_FRAMEWORK = {    "DEFAULT_THROTTLE_CLASSES":['cmdb.utils.throttle.Visit2Throttle'],  #此時不能在這裏添加兩個控制    "DEFAULT_THROTTLE_RATES": {    "xiao": '3/m',    "vip":'10/m', #vip用戶訪問頻率限制}}基本使用    類   繼承:BaseThrottle 實現:allow_request, wait    類   繼承：SimpleRateThrottle 實現:get_cache_key 、 scope = "xiao" (配置文件中的key)