Abstract:
This dissertation presents an Object Distribution System (ODS), a distributed system inspired bythe ultra-large scale distribution models used in everyday life (e.g. food or newspapersdistribution chains). Beyond traditional mechanisms of approaching information to readers (e.g.caching and mirroring), this system enables the publication, classification and subscription tovolumes of objects (e.g. documents, events). Authors submit their contents to publication agents. Classification authorities provide classification schemes to classify objects. Readers subscribe totopics or authors, and retrieve contents from their local delivery agent (like a kiosk or library,with local copies of objects). Object distribution is an independent process where objectscirculate asynchronously among distribution agents. ODS is designed to perform specially well in an increasingly populated, widespread and complex Internet jungle, using weak consistency replication by object distribution, asynchronousreplication, and local access to objects by clients. ODS is based on two independent virtualnetworks, one dedicated to the distribution (replication) of objects and the other to calculateoptimized distribution chains to be applied by the first network. The IRTF (Internet Research Task Force) has stated that resource discovery tools (RDT) havescalability problems. Danzing et. Al. [Dan94] has classified these problems in three dimensions: Data volume, number of users, and RDT diversity. Our work is focused on providing solutions to the lack of scalability mainly on the first twodimensions. The goal is to provide local access to relevant and pre-selected information;obtaining the best service from the ordered use of global interconnections where bandwidth isscarce, quality is unstable and network partitions occur too often; and providing a global andcooperative mechanism for content classification and qualification (meta-information). We focus on a model centered on communities or organizations that are producers and consumersof information: they may produce, classify, label, offer and publish information, and also look forand consume information produced by other distant communities. These interactions occur with alocal (region, organization) service agent, while object distribution is done asynchronously,reliably and cooperatively among agents located anywhere in Internet. This model is appropriatebecause intra-community networking is usually adequate meanwhile external networking isusually poor and more expensive.
Citación:
---------- APA ----------
Righetti, Claudio Enrique. (2000). Fallas de escalabilidad en Internet. (Tesis Doctoral. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales.). Recuperado de https://hdl.handle.net/20.500.12110/tesis_n3327_Righetti
---------- CHICAGO ----------
Righetti, Claudio Enrique. "Fallas de escalabilidad en Internet". Tesis Doctoral, Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales, 2000.https://hdl.handle.net/20.500.12110/tesis_n3327_Righetti
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