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Not only is it used by many athletes in our country, but Dowie can be seen in any weightlifting club abroad.124. X.X.2DDoS attacks can be divided into many different forms. These forms include flood attacks and more sophisticated application layer attack methods/tools. Flood attacks rely on a large amount of traffic/sessions to deplete a target, such as TCP SYN, ICMP, and UDP floods; Advanced application layer attack methods/tools include Slowloris, KillApache, etc.In the process of DNS resolution, the client initiates a query request, and the DNS server may need to make additional queries to complete the resolution process and give a response, which will consume certain computing and network resources. If an attacker uses a large number of controlled hosts to continuously send resolution requests for different domain names, the cache of the DNS server will be continuously refreshed, and the failure of a large number of resolution requests to hit the cache will cause the DNS server to consume additional resources for iterative queries, which will greatly increase the resource consumption of the DNS server.张姑娘说了，那夫人一准不会抓药的，肯定会让她大师兄再重新诊脉。Event is a procedural database object called by MySQL at the corresponding time. An event can be called once or started periodically. It is managed by a specific thread, which is also called "event scheduler".