Ubicrawler: A scalable fully distributed web crawler
Software: Practice and Experience, 2004•Wiley Online Library
We report our experience in implementing UbiCrawler, a scalable distributed Web crawler,
using the Java programming language. The main features of UbiCrawler are platform
independence, linear scalability, graceful degradation in the presence of faults, a very
effective assignment function (based on consistent hashing) for partitioning the domain to
crawl, and more in general the complete decentralization of every task. The necessity of
handling very large sets of data has highlighted some limitations of the Java APIs, which …
using the Java programming language. The main features of UbiCrawler are platform
independence, linear scalability, graceful degradation in the presence of faults, a very
effective assignment function (based on consistent hashing) for partitioning the domain to
crawl, and more in general the complete decentralization of every task. The necessity of
handling very large sets of data has highlighted some limitations of the Java APIs, which …
Abstract
We report our experience in implementing UbiCrawler, a scalable distributed Web crawler, using the Java programming language. The main features of UbiCrawler are platform independence, linear scalability, graceful degradation in the presence of faults, a very effective assignment function (based on consistent hashing) for partitioning the domain to crawl, and more in general the complete decentralization of every task. The necessity of handling very large sets of data has highlighted some limitations of the Java APIs, which prompted the authors to partially reimplement them. Copyright © 2004 John Wiley & Sons, Ltd.
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