亚精区一区区二在线观看

? ?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.Return context.getNum1 () + context.getNum2 ();走了几步，在一棵树底下，火光照见一只土黄色的山蛙，正鼓着眼睛蹲在那，似乎被突如其来的亮光晃花了鼓泡眼。香荽笑道：你急啥？等大婚那天，世子自然也是要笑的。If I set a vague goal and want to improve my English, I will be at a loss when practicing deliberately.船主决断吧，我主我的学事就好。