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Increasing effectivness of CDN network
Barzali, Mark ; Pluskal, Jan (referee) ; Grégr, Matěj (advisor)
Tato práce představuje koncept sítě pro doručování obsahu Content Delivery Network (CDN) a vymezuje současné problémy, kterým tyto sítě čelí. Následně je představena architektura CDN ve společnosti Seznam.cz. Studie zahrnuje získání výkonnostních metrik CDN Seznam.cz, konkrétně využití sítě a zaplňování mezipaměti, pro přehled o současném stavu CDN. Výsledky obsahují měření z proxy serverů v CDN Seznam.cz, která budou dále porovnávána s budoucími vylepšeními. Celkově výsledky odhalují aktuální stav CDN v existující architektuře a poskytují cenné poznatky pro potenciální optimalizace sítě. Dále jsou diskutovány přístupy, které by mohly pomoct zvýšit efektivitu vyrovnávací paměti ve firmě, detaily implementace a konečné výsledky
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CDN and clustering in GNU/Linux with performance testing
Mikulka, Pavel ; Pelka, Tomáš (referee) ; Šimek, Milan (advisor)
Fault tolerance is essential in a production-grade service delivery network. One of the solution is build a clustered environment to keep system failure to a minimum. This thesis examines the use of high availability and load balancing services using open source tools in GNU/Linux. The thesis discusses some general technologies of high availability computing as virtualization, synchronization and mirroring. To build relatively cheap high availability clusters is suitable DRDB tool. DRDB is tool for build synchronized Linux block devices. This paper also examines Linux-HA project, Redhat Cluster Suite, LVS, etc. Content Delivery Networks (CDN) replicate content over several mirrored web servers strategically placed at various locations in order to deal with the flash crowds. A CDN has some combination a request-routing and replication mechanism. Thus CDNs offer fast and reliable applications and services by distributing content to cache servers located close to end-users. This work examines open-source CDNs Globule and CoralCDN and test performance of this CDNs in global deployment.
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Intelligent File Distribution in CDN
Kaleta, Marek ; Kouřil, Jan (referee) ; Škoda, Petr (advisor)
This work deals with algorithms for distributing and mapping content on nodes in CDN system. Compares local and global algorithms for loading files on origin and edge servers. A high level CDN simulator is made. A matrix based approach for mapping content on CDN servers is proposed along with tranformation for solution of mapping optimalisation through genetic algorithms.
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Intelligent File Distribution in CDN
Kaleta, Marek ; Kouřil, Jan (referee) ; Škoda, Petr (advisor)
This work deals with algorithms for distributing and mapping content on nodes in CDN system. Compares local and global algorithms for loading files on origin and edge servers. A high level CDN simulator is made. A matrix based approach for mapping content on CDN servers is proposed along with tranformation for solution of mapping optimalisation through genetic algorithms.
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Web development using the JAM Stack technology
MINKA, Jakub
The aim of the thesis is to introduce a modern alternative in the field of web development using JAM Stack technology. Web technologies are developing at a~very fast pace and there are curently a lot of web technologies available on the market to develop websites. Each has its own pluses and minuses and the JAM Stack is located somewhere between. In contrast to the classical front end + back end, JAM Stack is bulit on a purely static concept with no need to use server and databases. It allows web creators to build secure and fast websites. JAM Stack is a method, which consists of three elements - JavaScript that handles and performs client requests, number of API's (application programming interfaces) that mediate server-side and database operations and Markup language. The author will focus on various forms of JAM Stack, test and describe some useful API's and markup language tools, explore the possibilities of using this technology and compare it with the other technologies. In the practical part he will create a functional website entirely bulit with JAM Stack technology. The website will be published using some of the static hosting providers and the website will be distributed over CDN.
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CDN and clustering in GNU/Linux with performance testing
Mikulka, Pavel ; Pelka, Tomáš (referee) ; Šimek, Milan (advisor)
Fault tolerance is essential in a production-grade service delivery network. One of the solution is build a clustered environment to keep system failure to a minimum. This thesis examines the use of high availability and load balancing services using open source tools in GNU/Linux. The thesis discusses some general technologies of high availability computing as virtualization, synchronization and mirroring. To build relatively cheap high availability clusters is suitable DRDB tool. DRDB is tool for build synchronized Linux block devices. This paper also examines Linux-HA project, Redhat Cluster Suite, LVS, etc. Content Delivery Networks (CDN) replicate content over several mirrored web servers strategically placed at various locations in order to deal with the flash crowds. A CDN has some combination a request-routing and replication mechanism. Thus CDNs offer fast and reliable applications and services by distributing content to cache servers located close to end-users. This work examines open-source CDNs Globule and CoralCDN and test performance of this CDNs in global deployment.
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