I have been studying DDOS attacks recently and have read through the book "King of Destruction-DDOS Attacks and Prevention". The book is very detailed about DDOS attack methods and prevention, which is recommended to read, and summarizes the DDOS attack methods in this book.
Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.
Mobile phone address book memos, operating system backup points, database backup, etc. in life are all applications of memo mode. Memorandum mode captures the internal state of an object without destroying the encapsulation and saves the state outside the object, so that the object can be restored to its original state later. The specific structure diagram is as follows:
《爱玛》是简·奥斯汀继《理智与情感》、《傲慢与偏见》和《曼斯菲尔德庄园》之后，在她生前发表的最后一部作品。这部小说虽然不像《傲慢与偏见》那样脍炙人口，但它在描写世态人情方面，似乎比其他作品更有深度，因而被不少评论家视为奥斯汀最成熟的小说。小说现实主义成分增多，戏剧成分减少，结构精微巧妙，喜剧气氛弥漫全书，趣味横生。女主角Emma是个又漂亮、又聪明、又有钱的年轻姑娘，由于具有这般得天独厚的条件，不禁有点自视过高，因而喜欢随心所欲。她自己打定主意不结婚，却热衷于给别人牵线搭桥。而她给别人做媒，每每不是按照情理，而是凭着异想天开或一时冲动，乱点鸳鸯谱，结果闹出许多笑话，吃了不少苦头。不过，Emma虽然没给别人撮合成一对亲事，自己却坠入情网，和Knightley喜结良缘。
2. Platelet Factor Platelets play a role in hemostasis and thrombosis through the following two mechanisms: ① Platelets are the main components of emboli, especially in arterial thrombosis and microthrombosis of microvessels. (2) Through its thrombotic effect and release of products, it is beneficial to platelet aggregation, embolus formation, stimulation of leukocytes and injury of endothelial cells, promotion of blood coagulation, and thrombosis. 3. Epidemiological investigation data of leukocyte and erythrocyte factors show that there is a certain relationship between leukocyte count and cardiovascular diseases. Some studies have shown that leukocyte count is a valuable indicator similar to blood pressure and serum cholesterol in predicting myocardial infarction and is an independent risk factor.
Wang Bo explained that online marketing pays attention to "planting grass and pulling grass", storing water, and then detonating at a certain point in time, but offline consumers cannot afford to wait, nor can stores. Therefore, when resonating online and offline, activities should be increased according to offline characteristics to maintain heat.
《泰坦》新季将展现被小丑所伤后的芭芭拉,本是蝙蝠少女的她坐上了轮椅,成为哥谭的警察局长,与回到哥谭的迪克·格雷森旧情复燃,也合作打击犯罪。Welch本人则在2016年一次车祸后失去了一条腿,从此一直积极为残疾群体发声。
Although it can weaken the connection between objects, if it is overused, it will make the code difficult to understand and maintain, etc.
身在美国宾夕法尼亚州的藏獒专家卓木强巴突然收到一个陌生人送来的信封，装着两张照片，惊现的远古神兽，促使卓木强巴及导师、世界犬类学专家方新教授亲赴西藏，发现照片上的动物竟然和帕巴拉神庙有关……
Memorandum mode: Pay attention to the state change of encapsulated objects and support state saving and recovery.
This principle means that there are no methods in each interface that subclasses cannot use but must implement. If not, the interface must be split. It is better to use multiple isolated interfaces than to use a single interface (an interface where multiple interface methods are assembled into one).
《人民利益》是一部25集大型民生环保电视连续剧。
Note: The singleton methods used in Android source code include: InputMethodManager, AccessibilityManager, etc. all use this singleton mode.
没想到在越国的土地上，还真有人向越王动手，今日的事情应该算是个偶然吧。
1920年，第一次世界大战刚刚结束。美国虽然发了一笔战争财，但经济或多或少受到了影响。美国政府决定调整经济结构，鼓励国内商业和贸易，什么东西都可以卖，除了酒以外。1920年1月2日，受到舆论界主张禁酒的强烈呼声影响，美国政府颁布了禁止酿造和发售酒类的《沃尔斯特法令》，也就是后人熟知的《禁酒令》。联邦特工人员亲自出动，把大量的威士忌倒入阴沟，并逮捕那些拒不执行命令的酒馆老板和酒鬼。除了「天高皇帝远」的西部各州外，酒似乎从美国国土上「消失」了。
However, although this book is co-written, the story it tells is only the story of one of us (Eriksson), who has been studying outstanding figures with great concentration since he grew up. Therefore, we chose to write this book from his perspective. The person "I" appearing in the book should refer to him. However, this book is the crystallization of our joint efforts to describe this very important topic and its meaning.
李南恩是个小镇姑娘，从小热爱中国传统文化。大学毕业后到了英国爱丁堡大学学习建筑学，并阴差阳错进入了“高级动物研究社”。此研究社正在开发一套具有跨时代意义的生态建筑系统名为“空中花园”，而研究社的灵魂人物周尔文 是一个高冷学霸，致力于研究生态环保和建筑的融合。两人互是对方眼中的冷血鳄鱼和恼人鸟，成为冤家。周尔文不仅对南恩的才能有质疑，她推崇的中国传统建筑理念也得不到周尔文的认可，总是高木在一旁当和事佬。经过一段时间的相处和磨合，他们发现各自的理论共通融合以后对“空中花园”有极大益处。毕业后，社员们归国创业，过程中遇到了重重阻碍，但他们越战越勇，通过所学理论，结合国内环境，因地制宜，最后获得巨大成功，带着中国梦，把中国文化下的成果带出了国门，颠覆了全球建筑行业。
少女又道：恕奴家冒昧，公子仪貌不凡，似乎是书香子弟，何故会流落此处呢？哪里？小姐谬赞了，在下一介山野村夫，因得罪地方官吏，杀人自卫，不得已避祸山林。
山里姑娘陶九丹命运多舛，其父陶郎中给陈府小少爷治病时，遭二房游月娥陷害，被逼嫁女冲喜，为抗婚与老伴葬身火海。九丹青梅竹马的未婚夫赵建武，为救她滚落山崖，生死不明。九丹寻找建武途中昏倒，被孙母所救并强行将她许配给傻儿子占春，她几番逃跑不果，怀上孙家骨肉。建武为寻九丹误入盐帮，命运一次次阴错阳差地将这对苦命鸳鸯分开。占春妹妹文秀则爱上建武，展开一段神女有意、襄王无情的苦恋。这时，陈府老爷陈天阔因九丹长相酷似死去的恋人萧百合，而与她结下不解之缘。当九丹得知父母遇难真相后，往日恩人变成仇人，建武为报仇几经生死。占春死后，陈天阔为救身陷囹圄的九丹，顶着世俗和家族的压力，将她孤儿寡母强行迎娶进府，九丹终于有了命运的归宿。
