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Hot spring eggEvents replace the work that could only be performed by the scheduled tasks of the operating system, and MySQL's event scheduler can be accurate to one task per second, while the scheduled tasks of the operating system (such as CRON under Linux or task planning under Windows) can only be accurate to one task per minute.Facing TCP's three-way handshake protocol, how should attackers launch attacks? The attacker first intentionally initiated a handshake packet. After receiving it, the server puts it into the waiting queue and returns an acknowledgement. Secondly, the attacker will no longer send the third acknowledgement packet, thus the server will make multiple retransmissions (the Linux system configures the number of retransmissions through tcp_synack_retries), consuming a lot of extra overhead, and the waiting queue will be occupied, even the waiting queue will be full, eventually causing the server to be unable to receive the client's request. This is the attack.攒着攒着就够娶媳妇了。3.3 For example, create a table to record the name and event stamp of each event schedule.大姐说有好东西送你们哩。出身普通的学霸张静美毕业后，一边面临着择业压力，一边稀里糊涂与霸道不羁的豪门少爷龙一领证结婚，过上了羡煞旁人“王子与公主的幸福生活”。然而，豪门生活和职场之路却没有想象中顺遂，现实的考验接二连三抛给这对新婚燕尔的小夫妻。当豪门少爷远离校园的象牙塔，开始踏进社会，与张静美共同迎接全新的考验时，一个接一个的难题都将等着他们去解答。