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    题名: 負載平衡與服務品質要求之探討
    The Research of Load Balancing and Quality of Service：The Case of iPalace Channel
    作者: 顏照銓
    Yen, Chao Chuan
    贡献者: 蔡瑞煌
    Tsaih, Rua Huan
    顏照銓
    Yen, Chao Chuan
    关键词: 負載平衡
    服務品質要求
    視訊隨選串流
    以TCP為基礎的影音串流
    Load Balancing
    Quality of Service
    Video-on-demand Streaming
    TCP-based Video Streaming
    日期: 2016
    上传时间: 2016-08-02 16:01:50 (UTC+8)
    摘要: Video-on-demand streaming從90年代就在適當的科技下成為網際網路流量的龍頭，故宮教育頻道在技術上採用TCP-based video streaming，但Video streaming使得負載較一般的伺服器繁重。透過負載平衡來分散負載是可行的方式之一，但在TCP-based video streaming的技術下，還是可能遭遇服務品質之相關議題。而服務品質要求 (Quality of Service, QoS)是用來對使用者適配的服務品質表現，做具體之等級劃分的管理工具，本研究以故宮教育頻道 (iPalace Video Channel; iPalace)為標的，針對其DNS Load Balancing搭配Round Robin的運作背景，提出VM Side QoS及Client Side QoS，在VM Side設定Load rate作為指標、在Client Side則以撥放器的表現為主，設定Initial Buffering Time、Mean Rebuffering Duration以及Rebuffering Frequency共三個指標，並搭配流量的實驗操作，劃分Regular及Class情境來蒐集資料。
    在分析後發現，在環境較為一致的Class情境中，Mean Rebuffering Duration與Load Rate及Rebuffering Frequency與Load Rate具有低度正相關。未來，若能在環境及客戶端的變異性有較多的控制及掌握，則可讓資料在蒐集上更為正確，讓後續的分析及探討與實際狀況更為相符。
    參考文獻: 1. Alrifai, M., Skoutas, D., & Risse, T. (2010). Selecting skyline services for QoS-based web service composition. In Proceedings of the 19th international conference on World wide web (pp. 11-20). ACM.
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    描述: 碩士
    國立政治大學
    資訊管理學系
    103356015
    資料來源: http://thesis.lib.nccu.edu.tw/record/#G0103356015
    数据类型: thesis
    显示于类别:[資訊管理學系] 學位論文

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