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Among them, one of the more common attacks is CC attack. It simply and roughly sends a large number of normal requests, exceeding the maximum capacity of the server and causing downtime. What I encountered was a CC attack. At most, about 20 IP addresses around the world sent requests in turn, with the number of requests per address ranging from 200 to 300 times per second. When I read the log, I felt that those requests poured in like a flood. In the blink of an eye, there were a lot of requests. In a few minutes, the volume of the log file increased by 100MB. To tell the truth, this is only a small attack, but my personal website has no protection, and the server is still shared with others. This kind of traffic immediately goes offline.15.6 eyes and their accessory diseases were cured with unqualified eye dysfunction.讲述了魔法学院院长长期潜伏在魔法学院里，掩盖了自己是大巫神的奴仆身份，为了复活大巫神，不惜借用江兰心的弟弟兰诺的肉身，暗中使用魔法杀害魔法学院的学生来完成自己的使命，江兰心在解救弟弟兰诺的过程中频频遇挫，当这个阴谋被揭穿后，其追求者路小布及学妹倾尽一切加入解救兰诺的计划中，一同跟院长斗智斗法。三支铳就这么被赵文华取走，杨长帆与戚继光这才告退，同行上车往南回自家地盘。不是冤家不聚头，包立功和马唯民两个年纪相仿的男人，走的每一步几乎都是同步，但每一步却走得那么不一样!从80年进入红星理发馆开始，为了学徒转正、为了房子、为了升职、为了同一个姑娘，为了孩子，两个人是一路斗争到底。马唯民表面上英俊斯文，言恳意切，但其实为了个人的利益，他可以出卖自己、背叛朋友和家人。而包立功却是“卖相抱歉”，实则心地善良淳厚。两人一辈子针尖对麦芒地斗争，马唯民往往因为算计和不择手段而暂时得逞，赢得了一些利益——他如愿提前转正了;在住房紧张的福利分房时代，抢先得到了房子;在改革开放后，他成了下海捞金的人，积累了财富和名望……As far as a class is concerned, there should be only one reason for it to change. If a class assumes too many responsibilities, it is tantamount to coupling these responsibilities together. Changes in one responsibility may affect other responsibilities. In addition, coupling multiple responsibilities together will also affect reusability.A friend taught me a method that impressed me deeply. A cloud service provider promised that each host would protect attacks below 5G traffic, and they bought five at one go. The website is set up on one of the hosts, but it is not exposed to the users. The other hosts are mirrored and are used to face the users. DNS will evenly distribute the traffic to the four mirror servers. Once there is an attack, this architecture can prevent 20G of traffic. If there is a bigger attack, then buy more temporary hosts and continuously expand the image.