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Content Provider | ACM Digital Library |
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Author | Ahamad, Mustaque Jun, Seung |
Abstract | As most blogs and traditional media support RSS or Atom feeds, the news feed technology becomes increasingly prevalent. Taking advantage of ubiquitous news feeds, we design FeedEx, a news feed exchange system. Forming a distribution overlay network, nodes in FeedEx not only fetch feed documents from the servers but also exchange them with neighbors. Among many benefits of collaborative feed exchange, we focus on the low-overhead, scalable delivery mechanism that increases the availability of news feeds. Our design of FeedEx is incentive-compatible so that nodes are encouraged into cooperating rather than free riding. In addition, for a better design of FeedEx, we analyze the data collected from 245 feeds for 10 days and present relevant statistics about news feed publishing, including the distributions of feed size, entry lifetime, and publishing rate.Our experimental evaluation using 189 PlanetLab machines, which fetch from real-world feed servers, shows that FeedEx is an efficient system in many respects. Even when a node fetches feed documents as infrequently as every 16 hours, it captures more than 90% of the total entries published, and those captured entries are available within 22 minutes on average after published at the servers. By contrast, stand-alone applications in the same condition show 36% of entry coverage and 5.7 hours of time lag. The efficient delivery of FeedEx is achieved with low communication overhead as each node receives only 0.9 document exchange calls and 6.3 document checking calls per minute on average. |
Starting Page | 113 |
Ending Page | 122 |
Page Count | 10 |
File Format | |
ISBN | 1595933239 |
DOI | 10.1145/1135777.1135799 |
Language | English |
Publisher | Association for Computing Machinery (ACM) |
Publisher Date | 2006-05-23 |
Publisher Place | New York |
Access Restriction | Subscribed |
Subject Keyword | Feedex Collaborative exchange Rss News feeds Atom |
Content Type | Text |
Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
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1 | Ministry of Education (GoI), Department of Higher Education |
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