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Independent Components Back
- Independent Components適用於組件互相獨立的系統
Communication Processes
Event System
1. Communication Processes(通信進程)
- Messages passed among named participants, 即需指定源和目的
- 適用於OS, Distributed System
- 組件: 進程
- 連接件: 進程間消息
- 單播
- 組播
- 多播
2. Event System(事件系統)
- 類似於推送系統, 實時動態更新且靈活變化
- 消息的傳遞由系統來完成, 而關注者並不需要關心消息的發送對象
- 組件:
- 關注者
- 接受者(頻繁變化)
- 連接件: 基於事件的隱式調用
- 優點: reconfigurable on fly(動態事件發送)
- 缺點: 構件放棄了對系統計算的控制, 從而存在計算正確性問題
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