近年來雲端寄存服務已成為了一個很好的行動應用程式開發平台，對應用程式開發者而言降低了硬體維護及管理成本，對於使用者而言更可以在通暢的網路環境中享用雲端資源。然而，台灣現有的雲端服務或是行動應用程式大都在網路上沒有在地性，使用這些應用程式都要連接到國外的雲端寄存服務，常有耗時太久的問題。現有的行動應用程式大都採用單一雲端寄存，使用時容易發生一些服務壅塞的問題和因為網路狀況造成的服務中斷。在本研究中，試圖利用多雲端寄存的方式解決服務壅塞以及服務中斷的問題，並藉由代理架構減少服務壅塞或服務中斷的影響。藉由本研究所提出之架構，可以減少用戶在服務壅塞或服務中斷時的不良體驗，並可分散應用程式提供者將資料僅寄存在單一雲端服務平台的風險。

In recent years, cloud hosting services have provided a good platform for mobile application providers so as to lower the cost of hardware maintenance and management. For end users, they are able to utilize cloud resources in a well network environment. Nevertheless, current cloud services and mobile applications in Taiwan are generally lack of locality. Therefore, it possibly takes much time to use these services through oversea connections. In addition, most of current mobile applications are with a single cloud hosting, resulting in a higher probability of service congestion or service interruption. In this work, we aim at alleviating the impacts of service congestion and service interruption with multiple clouds, and improving user experiences with the proxy architecture. Empirical studies show that we can reduce the bad user experience from service congestion or service interruption, and lower the risk of single cloud hosting.

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