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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

System Support for Hosting Services on Server Cluster

Tseng, Chun-wei 22 July 2004 (has links)
Since the speedy popularity of Internet infrastructure and explosive increasing of World Wide Web services, a lot of traditional companies had web-enabled their business over Internet and used WWW as their application platform. Those web services, such as the on-line search, e-learning, e-commence, multimedia, network service, e-government etc., need a stable and powerful web server to support the huge capability. The web hosting service becomes increasingly important in which the service providers offer system resources to store and to provide Web access to contents from individuals, institutions, and companies, who lack resources or expertise to maintain their Web site. Web server cluster is a popular architecture used by the hosting service providers as a way to create scalable and highly available solutions. However, hosting a variety of contents from different customers on such a distributed server system faces new design and management problems. This dissertation describes the work pursuing for constructing a system to address the challenges of hosting Web content on a server cluster environment. Based on the achievement of the software-based content-aware distributor, some high repetition and fixity tasks originally treated by software module are delivered to hardware module for speeding up the packet processes and for sharing the loads on the software module. Our software-based distributor is implemented in Linux kernel as a loadable module. A few system calls in user level are built to support the integration of resource management.
2

Decentralized Web Hosting : A comparative analysis of decentralized- and centralized web hosting

Olofsson, Joel, Rubensson, Oskar January 2022 (has links)
Publisering av webbplatser sker traditionellt i ett centraliserat nätverk där en webbserver distribuerar webbplatsens filer till sina klienter. Detta gör det möjligt för större företag eller regeringar att välja vilket innehåll som ska visas och tar bort den frihet som World Wide Web ursprungligen medförde. Att använda ett decentraliserat nätverk som värd för webbplatser kan dock vara fördelaktigt i vissa situationer på grund av de decentraliserade nätverkens höga skalbarhet och skydd mot censur. Denna studie syftar till att fastställa hur en webbplats kan publiceras i ett decentraliserat nätverk och om det kan vara att föredra för vissa typer av webbplatser. Studien syftar också till att ta reda på om det finns några säkerhetsbrister i de decentraliserade nätverken. Detta gjordes genom en litteraturstudie och genom att skapa ett test-system som kan stresstesta en webbplats som ligger på en vanlig webbserver och de decentraliserade lösningarna IPFS och Hypercore. Studien har visat att decentraliserade nätverk i allmänhet distribuerar en webbplats till många klienter snabbare i de flesta situationer. Vidare visas också att det finns några problem för en decentraliserad webbplats som inte finns i en webbplats som ligger på en vanlig webbserver. Bland dessa problem finns det vissa etiska diskussioner att ta hänsyn till när det gäller behandling av personuppgifter, oönskad spridning av olagligt innehåll och möjligheten att radera publicerat innehåll. I studien drogs slutsatsen att om en viss webbplats och dess ägare kan överblicka nackdelarna med ett decentraliserat nätverk bör det med största sannolikhet föredras framför en traditionell webbserver. / Hosting websites is traditionally done in a centralized network where a web server distributes the website’s files to it’s clients. This enables larger companies or governments to choose what content is shown and remove the freedom that the world wide web initially brought. However, using a decentralized network to host websites might be favorable in some situations due to the decentralized networks’ high scalability and protection against censorship. This study aims to determine how a website can be published in a decentralized network and if it can be preferred for some types of websites. The study also aims to find out if there exist any security vulnerabilities in the decentralized networks. This was done by a literature study and by creating a benchmarking system that can stress-test a website hosted on a traditional web server and the decentralized solutions IPFS and Hypercore. The study has shown that decentralized networks generally distribute a website to many clients faster in most situations. Further, it is also shown that there exists a few problems for a decentralized website that is not present in a website hosted on a traditional web server. Among these problems, there are some ethical discussions to be considered regarding the processing of personal data, unwanted distribution of illegal content, and the possibility of deleting published content. The study concluded that if a given website and its owner can oversee the disadvantages of a decentralized network, it should most likely be preferred over a traditional web server

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