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If an application uses a large number of objects, and a large number of these objects cause a large storage overhead, it should be considered. Also, most of the states of the object are external states. If you delete the external states of the object, you can replace many groups of objects with relatively few shared objects, or you can consider using the meta-sharing mode.《小妖在人间》主要讲述一位网络小说作家，写着千篇一律的穿越小说。觉得自己前途渺茫，突然有一天，他突然被逆向思维触动，决定写作一部反穿越的小说……谢逊也不管这人同不同意，就用一块湿泥贴在自己脸上，封住了口鼻，然后右手一扬，另一块泥飞掷过去，封住了麦姓武林人的口鼻。本剧由BeeS和NamfonK主演，是这对经典官配的第三度合作。剧中不仅有你从未见过的“中二戏精”款男主和时而柔弱时而战斗力满点的女主，更有大名鼎鼎、不容错过的“胶带吻”By default, the changes we make to the "firewall" are "temporary". In other words, when the iptables service is restarted or the server is restarted, the rules we normally add or the changes we make to the rules will disappear. In order to prevent this from happening, we need to "save" the rules.