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If I were to implement a pizza ordering system, I would definitely write the code like this, because this kind of code can be written subconsciously without consuming our brains. However, take a closer look at this code: the purpose of this method is to order pizza. However, the code for ordering pizza also needs knowledge about the production of pizza. This method must know all pizza. Worse still, if the types of pizza are to be expanded or pizza with poor sales volume are to be deleted in the future, then the code for ordering pizza will be modified. It looks very bad and should be revised. Our first step must be to separate the code for producing Pizza from the code for ordering pizza, because you should not let the code for ordering Pizza know the logic for producing pizza, but should hand over the logic for producing Pizza to a special type. In this way, we can cope with future changes-if we want to add or delete pizza, we can directly modify the producer of pizza without affecting the logic of ordering pizza.In the defense measures against DDOS attacks, deployment strategy is also a part that needs to be seriously considered. At present, the more reasonable deployment strategy is: the detection equipment is deployed close to the business host, the source is cleaned, and the bypass deployment is carried out. Attacks are distributed, and defense also needs to consider distributed deployment strategies.在2×01《One Year In》中，Tom Kirkman担任美国总统已满一年，他致力于重建美国首都，抓住发动灾难性恐怖袭击的幕后黑手。可是当乌克兰民族独立主义者劫持一家俄罗斯空军飞机之后，这位新总统的外交能力在人质危机中将面临终极考验。Paulo Costanzo本季扮演白宫政治主任Lyor Boone，Ben Lawson扮演英国军情六处特工兼Hannah Wells的新爱情对象Damian Rennett，Zoe McLellan扮演白宫顾问兼律师Kendra Daynes，他们均为新的常规演员。先前只顾想点子和行动，一直不觉怎么样，这会儿真趴在屋顶上，小娃儿心就咚咚跳起来。等到两人来到街市，确实看到了归来的越王尹旭，看到马车窗口探出的那张熟悉的面孔，李玉娘有些莫名的冲动，却又驻足不前。是不是你觉得，黎指挥的性命就珍贵些，我的命就贱一些？林聪和黎水听了这话愣住了，同时心里生出愧疚。I thought it was a long time. I thought about whether to add an article and send it next Friday night.