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黄瓜则始终俊脸含笑地看着林聪，今天他神采格外动人。Set up a solutionThe attack uses the method of sending a large number of domain name resolution requests to the attacked server, Usually the domain name requested to be resolved is randomly generated or does not exist on the network. When the attacked DNS server receives the domain name resolution request, it will first look for whether there is a corresponding cache on the server. If it cannot be found and the domain name cannot be directly resolved by the server, the DNS server will recursively query the domain name information from its upper DNS server. The process of domain name resolution brings a great load to the server. If the number of domain name resolution requests exceeds a certain number per second, the DNS server will time out to resolve domain names.Adapter pattern of objects: When you want to convert an object into an object that meets another new interface, you can create a Wrapper class, hold an instance of the original class, and in the method of the Wrapper class, just call the method of the instance.ICalculator cal = new Plus ();CBS宣布续订《警察世家》第11季。青山将头伸老长去看，一边说道：我当是啥哩，原来是小青菜汤。