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HTTP slow attack is to use the normal interaction mechanism of HTTP protocol to establish a connection with the target server first, and then keep the connection unreleased for a long time. If an attacker continues to establish such a connection with the target server, the available resources on the target server will be exhausted and normal services cannot be provided.When multiple connections are constructed, the number of connections to the server will soon reach the upper limit. Apache has 150 connections by default, so as long as we establish 150 such connections, Apache cannot process new requests and denial of service.If the power key is not released for 3 seconds, continue the HOME key for 10 seconds, then release the power key and continue to press the HOME key for 15 seconds, the recovery mode will be completed.70年代后期，南方某小城的一个小宅院里生活着赵、叶、彭三家人。赵方圆和老伴唐妙香养育了赵家仁、赵家慧、赵家信、赵家义、赵家好五个孩子，一家人过着清贫但温馨的生活。赵方圆受父亲之托，帮叶老保存着一幅画。一次意外中，为救家仁的未婚妻那红，古画落入彭世忠手中，彭世忠以此不断向老赵要挟勒索，甚至他女儿彭新华也加入其中，以此拆散了赵家慧和欧阳的爱情。叶老儿子叶文祥一直恐惧出身问题，拒绝承认古画与自己有关，改革开放后，他得知古画真正价值后，又软硬兼施逼赵方圆归还古画。为了信守父亲的承诺，赵方圆与彭家展开了漫长较量，围绕着古画，三家的儿女们也展开了他们各自纠缠的爱恨情仇，几十年过去了，古稀之年的赵方圆终于见这个故事要从二十世纪三十年代的江南水乡——乌镇说起，自幼成为吴家少爷家祺陪读的张忠良和丫环素芬青梅竹马，感情甚笃。吴老爷一心向道，娶了八房姨太只为练成“九转还阳大功”。因为当年强占了儿子家祺的心上人紫纶，父子二人反目成仇，致使家祺离家出走。大管家吴宝联合四姨太几度暗害紫纶，紫纶想逃离吴家却连累素芬遭毒打后患上失语症，为了不让素芬重蹈覆辙地成为吴家九姨太，紫纶行刺不成被绑上了绞刑架，幸而被及时赶回的家祺救下。最后，一场大火成全了忠良和素芬，两人连夜乘船来到上海。 　　上海是忠良梦想中的天堂，它的繁华和残酷令重新能开口说话的素芬无所适从。忠良带着素芬欲参加王丽珍表姐何文艳的订婚宴，却在风雨之夜受尽羞辱……　　于是，这本该灭绝的王朝开始了一场新的混乱……