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Node simplifies the problem by starting to create exports objects during a module load. If it needs to introduce other modules and has circular dependencies, it can only be partially introduced, that is, only the part defined before the circular dependencies occur can be introduced.然而看似平静的生活背后暗潮涌动而这不知名的危机，是否包含着两人重生的秘密……可是看到李左车跪倒在自己面前的时候，眼神有稍微有些复杂了。三个男生的加入，让这所女子学校一时间躁动起来，更是让格斗社里以乔安妮为首的所有女生面临前所未有的困难。即将参加团体赛的六个人，经历了种种曲折后，从相互不了解，相互抵触，最终成为了彼此格斗生涯里最亲密的朋友，格子青春路上最重要的伙伴。How should we defend against this attack? First of all, as users, we try our best to download APP from regular channels and surf the Internet in a civilized manner, and try our best not to make broilers. Secondly, as a service manufacturer, when the server is attacked by DDoS, we try our best to improve the processing capacity of the server. When the processing capacity of our server is greater than that of the attacker, these attacks are nothing to the server. Finally, under normal circumstances, the processing capacity of our server is generally lower than that of the attacker. In view of this situation, there are currently the following methods: 1. Violent methods, such as setting an access frequency threshold, and rejecting when the number of accesses per IP unit time exceeds this threshold; For a certain service, if the instantaneous request is too large, choose to directly refuse to ensure the normal operation of other services; This method may result in normal users not being able to use it. 2. Verification code. In order to prevent normal users from being injured by exposure methods, at present, service providers will send verification codes to "users" when receiving a large number of requests. If it is a real user, it will input verification codes, but if it is a broiler, it will not. Through this method, the real user and the broiler will be distinguished.尹旭说道：让周大和陆明小心，他二人必须全力以赴，为首好南部防线。【小萝卜头】开始出招了。