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Differences between simple factories and factory methods: Simple factories and factory method patterns look very similar, especially specific factories in simple factories and factory methods. Simple factory, all things have been done in one place. However, the factory method creates a framework for subclasses to decide how to implement it. For example, in the factory method, the OrderPizza method creates a general framework to create pizza. The OrderPizza method relies on the factory method to create specific classes and make actual pizza. It is possible to decide what the actual products manufactured are by inheriting the factory. Simple factories do not have this flexibility.//Technical interviewSlow POST attack uses POST request method. The attacker sends POST request message to the target server to submit data. The length of the data is set to a large value. However, in the subsequent data transmission, only a small message is sent each time, which causes the target server to wait for the attacker to send data. If an attacker controls a large number of zombie hosts to launch such attacks on the target server, the server will run out of resources and cannot provide services normally.《福尔摩师奶/危城First Lady》将会以英国妓女连环杀手“开膛手杰克”为蓝本，陈松伶透露于剧中本是一名不食人间烟火、极离地的贵妇，家道中落后被迫搬到廉租屋：“但我住木屋都要high tea同继续打扮1948年春，解放战争正继续向国民党统治区域推进，刘邓、陈粟、陈谢三路大军和彭德怀率领的西北野战军，纵横驰骋，席卷江滩河汉大地，威震西北战场，晋冀鲁豫区第一副司令员徐向前奉中央军委之命，率领八纵队、十三纵队、太岳、吕梁军区部队，开截止频率晋前线，打响了著名的临汾攻坚战……培璜对于临汾的城防设施甚是得意，叫嚣道，临汾战斗将是地下战、地面战、城上战之三层立体战与外壕战、城墙战、城内战之三层平面战所交叉组成的十字阵形战。又有这样高的城墙，又有如此密集的火力配备，真是固若金汤，势要让共军全军覆没在城下……许仙与白素贞在相处中，彼此相爱。一直爱慕白素贞的鼠妖景松和倾心许仙的金如意千方百计离间二人感情，但许白二人痴心不改，历尽磨难后喜结连理。二人开设医馆保和堂，小青也与伙计张玉堂相恋，几人联手救死扶伤，造福一方。法海因开天眼，预见到水漫金山的一幕，担心二妖是伪善，一切不过是为了蛊惑人心。怀疑之下，他道心动摇，产生心魔。如意看到许白生死相随的深情，心灰意冷之下被心魔蛊惑，制造凶案嫁祸白蛇。为了保护妻子，许仙求助法海，以纯善之身困住心魔，并借助金山寺众僧之力，与心魔同归于尽。白素贞不舍许仙牺牲，不惜水漫金山逼法海放人，最终犯下大错，被镇压在雷峰塔下。许仙从此四海为医，悬壶济世，替妻赎罪。