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FlyWeightFactory is responsible for creating and managing meta-units. When a client requests, the factory needs to check whether there are eligible objects in the current object pool. If so, it returns the existing object. If not, it creates a new object. FlyWeight is a superclass. When it comes to shared pools, It is easy to think of JDBC connection pooling in Java, Considering the characteristics of each connection, It is not difficult for us to sum up: Applies to several objects that are shared, They have some common attributes, Take the database connection pool as an example, url, driverClassName, username, password and dbname, these attributes are the same for each connection, so it is suitable to use the meta-sharing mode to process, build a factory class, take the above similar attributes as internal data and the others as external data, and pass them in as parameters when calling methods, thus saving space and reducing the number of instances.As seen above on the LINUX system, many connections are in the SYN_RECV state (SYN_RECEIVED state on the WINDOWS system) and the source IP address is random, indicating that this is a SYN attack with IP spoofing.森绘都本屋大赏年度第2作品<三日月>将拍摄日剧，永作博美&高桥一生共演，通过一个家族的50年历史，观察日本补习班的变迁。工藤阿須加、大政絢、壇蜜、黒川芽以、風吹纯加盟，2019年1月NHK放送。3. Please hold down the on/off key and the home key at the same time. When it lasts until the 10th second, please immediately release the on key and continue to hold down the home key.主角仲村叶在公司做白领，其实她是一名御宅族，最爱特摄影作品，她的日常生活总会陷入各种危机，而她脑内会将这一切换成特摄模式，而她本人能看到的特摄英雄们则给了她勇气。《双雄》讲述了抗日战争期间，爱国青年许念东、顾立铭在多方势力的各种角斗中，人生轨迹和奋斗目标都发生巨大转折。最后在党组织的正确引导下，许念中和林在云在最重要的时刻做出了最正确的选择。