記錄
3990
編號
狀態 NC090FJU00392006
助教
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號
學校
輔仁大學
名稱
系所
資訊工程學系
名稱
舊系
所名
稱
學號 489516181
研究
賴紀丞
生(中)
研究
生(英)
論文
名稱 多台應用代理伺服器中的分配機制
(中)
論文
名稱 A Dispatch Scheme in Multiple Application Proxies
(英)
其他
題名
指導
教授 梅興
(中)
指導
教授
(英)
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01
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學位
碩士
類別
畢業
學年 90
度
出版
年
語文
英文
別
關鍵
應用服務 應用代理伺服器 快取 分配機制
字(中)
關鍵
Application Services Application Proxy Cache Dispatch Scheme
字(英)
利用無線手持裝置來執行應用程式或是存取資料已經漸漸成為人們日常
生活的一部分，而網際網路快取代理伺服器在這樣的需求下被廣泛地使
用，網際網路快取代理伺服器常常被當作是傳統伺服器和使用者之間的
摘要 一個溝通橋樑。但是在利用網際網路執行應用程式的環境之中，應用程
式被固定在某些特定的伺服器或是代理伺服器之上，使得應用程式想要
(中)
藉著 Internet 來傳播存在著種種的困難而不易實現。 在本篇論文中，我
們提出了一個可以傳撥應用程式的基本網路架構，我們將它稱之為 ”
Application Service Network ”，簡寫為 ASN。ASN 的運作模式和 CDNs
(Content Delivery Networks) 中針對 Web content 的 Content Delivery Service
類似；主要的不同點在於 ASN 提供了存取應用程式服務以及運算的功
能。在本研究中，我們利用多台的應用代理伺服器建構了一個 ASN 網路
架構雛型，其中我們又提出了一個分配的機制 ---- Dynamic Dispatch
Scheme 來負責分配使用者的要求。從實驗的結果顯示，Dynamic Dispatch
Scheme 不僅可以縮短使用者的反應時間而且可以平衡各個伺服器的負
擔。一般來說，在使用者反應時間上 Dynamic Dispatch Scheme 與 Random
Dispatch 相較下縮短了 78% 、與 Round Robin Dispatch 相較下縮短了
73%，與 Basic Case 相較下縮短了 60%。
Accessing applications through wireless hand-held device become part of the daily
life recently. The proxy cache architecture is also widely used for the web content.
Proxy caches are used as smart intermediaries between traditional servers and
heterogeneous mobile clients. Since most of applications are dedicated to the
server or special proxies, applications are difficult to be distributed on Internet. In
this thesis, we propose an application delivery service framework called
摘要
“Application Service Network” (ASN). ASNs are working similarly to Content
Delivery Service in CDNs (Content Delivery Networks) for web content. ASN
(英) differs CDN with the additional application service accessing and computation
capabilities. In this research, we use application proxies to construct a prototype
network. A dynamic dispatch scheme is designed to select proxy for different
application services in ASN. From the results of test-bed experiments, the dynamic
dispatch scheme could not only improve the average response time for client, but
also balance the loads of multiple proxies. In general, the dynamic dispatch
scheme reduces up to 78% average response time than Random dispatch, 73%
than Round Robin dispatch, and 60% than Basic case.
Chapter 1. Introduction Chapter 2. Related Works 2.1 Content Delivery Networks
(CDN) 2.2 CDN & ASN 2.3 Open Pluggable Edge Services (OPES) 2.4 Cluster
Architecture & Dispatch Algorithm Chapter 3. ASN Architecture 3.1 Basic
論文 Components of ASN 3.2 Application Service 3.3 Request Type 3.4 Workflow of
ASN 3.5 Dynamic Dispatch Scheme 3.6 An Operation Example of ASN Chapter
目次 4. ASN Test-bed Analysis 4.1 Proxy Selection Schemes 4.1.1 Basic case 4.1.2
Random Request 4.1.3 Round Robin 4.1.4 Dynamic Dispatch Scheme 4.2
Response Time 4.3 Algebraic Expressions Chapter 5. Experiment and Analysis 5.1
Experiment Environment 5.2 Evaluation Chapter 6. Conclusion and Future Work
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