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DRDOS-Distributed Reflection Denial of Service (DRDOS-Distributed Reflection Denial of Service) is different from DoS and DDoS. This way relies on sending a large number of data packets with the victim's IP address to the attacking host, and then the attacking host makes a large number of responses to the IP address source to form a denial of service attack.According to the memory of Zhang Xiaobo, a soldier who personally participated in the battle that year:Groups objects into a tree structure to represent a "part-to-whole" hierarchy. Composite allows users to use both individual and composite objects consistently.板栗赔笑道：这个……三爷爷，我就是想见菡妹妹，想来瞧瞧她在做什么。Proxy: Translated as agent, the interface between the agent (B) and the agent (A) is exactly the same. The main usage scenario (semantics) should be: in order to simplify programming (or cannot operate B), the request is not directly handed over to the agent (B), but to the code party (A), and the agent communicates with the agent to complete the request.Updated April 1