請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62319
標題: | 修復分散式發布訂閱服務演算法之設計與實作 Design and Implementation of Service Recovery Algorithms for Distributed Publish/Subscribe Systems |
作者: | Hsin-Yi Chen 陳欣毅 |
指導教授: | 施吉昇(Chi-Sheng Shih) |
關鍵字: | 分散式系統,發布訂閱系統,容錯,服務修復,共識演算法, Distributed system,Publish/subscribe system,Fault-tolerance,Service recovery,Consensus algorithm, |
出版年 : | 2013 |
學位: | 碩士 |
摘要: | 近年來,網路技術應用於遞送災難管理的訊息。隨著人們依賴通訊科技,災難環境中的網路服務品質越來越重要。但是現存多數網路服務原先並非為了災難管理而設計。在不穩定的網路環境,它們的可靠度不足以應付可能發生的服務故障。
本論文提出一種修復機制,可加強現有的分散式訊息遞送軟體的可靠度。修復機制讓廣域網路上故障的服務自動被另外一個服務所替代。另外,本論文也提出分散式演算法解決服務修復過程中的共識問題。藉由修復機制,訊息遞送系統可以容忍並行發生的故障,提供更好的服務品質。 In recent years, network technologies have been applied on message delivery in disaster management. As people relies on these communication technologies, quality of service becomes more and more important in disaster scenario. However, most existing network services are not originally designed for disaster management. Under the environment of unstable network, they do not provide sufficient reliability support to deal with service failure. In this work, we designed recovery mechanisms for an existing distributed message delivery system to improve its reliability. The proposed mechanism makes a failed service be replaced automatically with another one on wide area network. Furthermore, we proposed a distributed algorithm to solve the consensus problem in service recovery. With the recovery mechanism, the message delivery system can tolerate concurrent failure on individual services, and thus provides better quality of service. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62319 |
全文授權: | 有償授權 |
顯示於系所單位: | 資訊工程學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-102-1.pdf 目前未授權公開取用 | 998.59 kB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。