What are disadvantages of Abstract factory design pattern?
抽象工厂模式的缺点是什么？
For the design of protocol manager, we use the Proactor Pattern and abstract factory to increase the scalability of the system and reduce the coupling degree between modules.
在协议管理器的设计上，使用了前摄器模式和抽象工厂，增加整个系统的扩展性并降低了模块之间的耦合度。
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