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步兵相对于骑兵要弱势很多。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.有一批黑人，一个黑人的劳力，能顶三个光头。2018-03-02 17:42:49心怀杀父之仇的高仲祺（何润东饰）成为了邯平督军府的参谋长，表面看似8月5日，医疗题材电影《#你若安好#》在北京举办探班活动，导演刘抒鹃、主演保剑锋、隋源、李木子、袁霞、翟小兴、嘉央桑珠等悉数亮相，他们还在高温天气坚持拍摄。 电影《你若安好》不仅浓墨重彩的描绘了医疗行业、医患关系等当下社会热点话题，更首次将全科医生的形象搬上银幕，树立属于中国人自己的医疗工作者艺术形象。The last two\ r\ n indicate that the http request header is over. If we remove one\ r\ n, it means that the packet is not completed, then the server will wait for the client to continue to send the rest of the packet. At this time, the client will send any HTTP header and keep the connection.