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Peer-to-peer (P2P) based content distribution networks (CDNs), e.g., BitTorrent, are widely used in the today's Internet. Since all peers interested in a specific content provide storage and upload capacity those CDNs facilitate a cheap and easy distribution of large amounts of data. However, they generate a lot of costs for Internet Service Providers (ISPs) as normal users also act as a source for...
In Delay and Disruption Tolerant Networking (DTN), Epidemic, PRoPHET and Spray and Wait protocols work by distributing one or more message copies (Bundles). They can naturally adapt to the mobile situation where the destination node moves from an old connection endpoint to a new connection endpoint because any Bundle copy may luckily be able to reach the new connection endpoint where the mobile node...
Hash functions have a space complexity of O(n) and a possible time complexity of 0(1). Thus, packet classifiers exploit hashing to achieve packet classification in wire speed. Especially evolvable hash functions can adapt to a changing classification data base. But hash functions do have an important flaw. Some of the hashed keys may result in a large number of collisions. If those keys occur frequently,...
Supply chain management (GSCM) making the interactions between applications much easier, but the service delay and unstable network will block the whole business process. Replicated services are a good choice to resolve this problem. The transparency of information become increasingly important in the GSCM as a result of using caching, middleware and distributed database replication etc. technologies...
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