利用redis的bitmap实现用户签到功能

import datetime
import redis


class RedisSignIn():

    def __init__(self):
        # 连接redis数据库
        self.redis_store = redis.Redis(
            host="127.0.0.1",
            port=‘6379‘,
            db="1"
        )

    @staticmethod
    def GetDaliySignKey(time=datetime.datetime.now()):
        # 拼接redis的key
        bitmap_key_daily_sign = "daily_sign_{date}"    #  daily_sign_2019-09-16
        return bitmap_key_daily_sign.format(date=time.date())

    def UserDailySign(self, user_id):
        #  今日签到并获取本周签到记录
        sing_status = self.UserDaliySignByUserId(user_id)
        if not sing_status:
            pass
            # return "今日已签到"
        # 获取本周签到记录
        rec,l = self.GetSignRecordByUserId(user_id, 7)
        print(rec)
        print(l)
        return l,rec

    # 获取指定时间段的签到记录
    def GetSignRecordByUserId(self, user_id, days=30):
        # 开启管道模拟事务
        with self.redis_store.pipeline(True) as p:
            for i in range(days):
                # 获取key对应值的二进制表示中的某位的值
                p = p.getbit(self.GetDaliySignKey(datetime.datetime.now() - datetime.timedelta(days=i)), user_id)
            # execute返回命令执行结果列表
            res = p.execute()
            # res是一个[1,0,0,0...]的列表
            print(‘res‘,res)
            # 转成字符串的二进制
            print(sum(res))
            return ‘‘.join([str(x) for x in res]),sum(res)

    # 通过user_id用户做每日签到
    def UserDaliySignByUserId(self, user_id):
        if self.GetDailySignByUserId(user_id):
            print( "今天您已签到")
            return False
        # 今日签到
        key = self.GetDaliySignKey()
        # key就是签到日期，将该user_id在key对应的位置上设置为1，表示签到了
        self.redis_store.setbit(key, user_id, 1)
        # 设置key的过期时间
        self.redis_store.expire(key, 60 * 60 * 24 * 30)
        return True

    # 通过user_id获取用户每日签到信息
    def GetDailySignByUserId(self, user_id):
        return self.redis_store.getbit(self.GetDaliySignKey(), user_id)


if __name__ == ‘__main__‘:
    user_id=1003
    sign=RedisSignIn()
    sign.UserDailySign(user_id)
    # sign.GetSignRecordByUserId(user_id)

利用redis的bitmap实现用户签到功能

原文：https://www.cnblogs.com/laowang-106/p/11526513.html