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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.Manaca, to put it bluntly, is a subway card. By charging money into the card, you only need to swipe your card when entering or leaving the subway, and you don't need to buy a ticket. In addition, the vending machine in the subway can also use Manaca credit card to pay, which is very convenient.故事发生在1990年代初，处于青春期的杰敏在父亲去世后被送到亲戚家生活，亲戚家是虔诚的“耶和华见证会”信徒。在那里，杰敏与一位见证会长者的女儿玛丽克建立了意外的联系，她们立即被对方吸引并开始了秘密的、不言而喻的地下恋情。但是，当她们之间的吸引力变得再也无法隐藏时，这个宗教社区开始将他们分开，迫使两个女孩在信仰和爱情之间做出选择。居委会主任夏惠兰因少年小朗的跳楼事件，意外发现了藏身在社区中的幸福工程传销组织的故事。在市长杨弘立和公安机关的指挥下，夏惠兰打入传销窝点，在养子武国强、记者唐小梅的配合下，与幕后网头斗智斗勇，一举将“幸福工程”逐出各大社区，更提出立法、立德的建议，一方面向政府进言，积极推动反传销立法，一方面以居委会为中心，宣传传销危害、防堵传销隐患，从源头上杜绝传销并逐渐成长为坚定的反传销斗士。她的行为引起了社会的广泛关注，更引来了传销集团的恐吓和攻击。随着调查的不断深入，一段尘封的往事也逐渐揭开面纱：原来，杨弘立就是夏惠兰曾经的恋人；而她以为早就死去的儿子都还活着，意外地出现在她面前，成为传销之战中争锋相对的对手。 最终，唐刚受到法律制裁。丰采社区的传销组织“幸福工程”被一网打击，西林大破传销案。国家相关机构也将传销正式立法，夏惠兰则成为了反传销的斗士！　　经过蓝波和尚恩的不懈努力，威尔渐渐敞开心胸，而好友查克的一席话，更是让他豁然开朗。冰冷无情，从来就不是小龙女的性格。