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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.斯班赛（道恩·强森 Dwayne Johnson 饰）曾经是一名在赛场上叱咤风云的橄榄球明星，如今，已经退役的他必须忘记往日的那些令他热血沸腾的“峥嵘岁月”，并且尝试着在橄榄球队理财经理这个职位上找到人生新的方向和意义。　　Ned和Conor被迫住进了寄宿学校的同一间宿舍，一个是在橄榄球疯狂的学校里被欺负的文艺少年，一个是新到而被寄于厚望的球星队员，他们俩却悄悄地发展出一段深厚的友谊，直到引起了其他人的质疑。1. First handshake: Establish connection. The client sends a connection request message segment, setting the SYN position as 1 and the Sequence Number as x; Then, the client enters the SYN_SEND state and waits for confirmation from the server.《追拳》是一个当下年轻观众喜欢的题材，集合了励志体育、热血动作、青春成长以及浪漫爱情等多个看点元素。讲述一个最美的南国小城三都水族的年轻拳手潘杰（萧传勲 饰演）经历成长后重回拳坛，找回打拳意义的故事。对他而言，是不是和尹旭青梅竹马倒不重要，重要的是他和谁生/>//下孩子。对时尚过敏的朴素大学生木之宫茜，在大学与小学、中学时代人气很高的同学富永悠人再会，被说还是一如既往的朴素。对悠人暗恋的茜，决定变漂亮再和悠人相会，与不可思议的超凡魅力美容师诚相遇，变得完全不同的时尚。