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该剧以女孩艾红的视角，讲述了自己的养父雷二亮与养母许诺，从上世纪70年代到本世纪初的生活、爱情故事，讲述了他们所生活着的筒子楼里几户人家，在社会变革这一大背景下的苦辣酸甜、聚散离合。1975年，其貌不扬的汽修工人雷二亮娶了美丽的女护士许诺，并搬进单位的筒子楼，与师哥何德利夫妇一起开始了长达几十年的筒子楼生涯。小小一栋筒子楼，却宛如一幅当代中国的微缩模型，在这里，他们经受了生活的考验，阅尽了人世的冷暖，也让自己在一次次挫折中成长起来。2. What if the website is shut down and cannot be opened? In this case, only the police can intervene to retrieve the platform database.就算你要杀人，你心里都未必认为他是该杀的。The content of the website is stored on the source server, and the CDN is the cache of the content. Users are only allowed to access the CDN. If the content is not on the CDN, the CDN sends a request to the source server. In this way, as long as the CDN is large enough, it can resist great attacks. However, this method has a premise that most of the content of the website must be statically cached. For websites (such as forums) with dynamic content as the main content, we must think of other ways to minimize users' requests for dynamic data.夏正在旁道：这也与先前张经的调遣有关，最能打的勇将都调到了这边。马列文（陈建斌 饰）是一位实体书店的守望者，他的梦想就是开办实体书店，让城市中的人们有可以沉下心来享受阅读乐趣的一方净土，因而不惜牺牲商业利润来守护精神家园。出于责任，他照顾着身患躁郁症的前妻王忆如（刘威葳 饰），而家庭教师简单（梅婷 饰）的出现为他的生活带来一丝慰藉。简单原是一位中学教师，辞去教职来北京与未婚夫冯春生（涂松岩 饰）结婚却惨遭背叛，简单在马列文的提点下勇敢拒绝了委曲求全的婚姻，并和马列文之间产生了莫名的情愫。马列文复杂的家庭关系使得二人虽已心意相通却彼此克制。而此时马列文前妻病愈归来想要复婚。面对责任、爱情以及岌岌可危的事业，马列文没有选择逃避，决定牵起简单的手，共同面对，最终战胜困难，实现了一直守望的梦想，收获成功，感悟幸福其实很简单。Reflection attack is also called amplification attack. This kind of attack is mainly based on UDP protocol. Common attack types include NTP, DNS, etc. Generally, the traffic of request response is much larger than the traffic of request itself. Attackers can create large-scale traffic sources with small traffic bandwidth through the characteristic that traffic is enlarged, thus launching attacks on targets. Reflective attacks are not strictly a kind of attacks. They only use the business characteristics of certain services to launch Flood attacks at a lower cost. The detailed schematic diagram is as follows: