Long-term digital archiving based on selection of repositories over P2P networks

Vignatti, Tiago; Bona, Luis C. E.; Sunyé, Marcos Sfair; Vignatti, André Luís

doi:10.1109/p2p.2009.5284519

Cited by 2 publications

(4 citation statements)

References 19 publications

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“…Even so, we use these two goals, hoping to approximate the above arguments. Indeed, experimental results of the simulations, presented in [32] confirm that these are good goals for the heterogeneous case.…”

Section: Contributions and Results Obtainedsupporting

confidence: 56%

“…Through simulations, presented in [32], we found that among the three strategies presented, the Ideal Subset strategy proved to be the most effective in the creation of replicas and load balancing, and also obtaining the highest number of inserted objects in the network. This strategy has a computational complexity that could not be feasible in practice if not carefully formulated.…”

Section: Contributions and Results Obtainedmentioning

confidence: 98%

“…Moreover, if M o is small, we do not have many options to choose or there are not enough repositories to satisfy the desired reliability of an item. Several sizes of M o are evaluated in [32].…”

Section: Algorithm 4: Greedy Over Subsetmentioning

confidence: 99%

“…On the other hand, considering a subset of small size is a feasible option of implementation even in face of the scalability of the network. Thus, based on the results showed in [32], we can choose the optimal size of the subset and, therefore, decide how many hash functions to use.…”

Section: Specific Selection Of Repositoriesmentioning

confidence: 99%

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Extending OAI-PMH over structured P2P networks for digital preservation

et al. 2012

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Open archives initiative (OAI) allows both libraries and museums create and share their own low-cost digital libraries (DL). OAI DL are based on OAI-PMH protocol which, although is consolidated as a pattern for disseminating metadata, does not rely on either digital preservation and availability of content, essential requirements in this type of system. Building new mechanisms that guarantee improvements, at no or low cost increases, becomes a great challenge. This article proposes a distributed archiving system based on a P2P network, that allows OAI-based libraries to replicate digital objects to ensure their reliability and availability. The proposed system keeps and extends the current OAI-PMH protocol characteristics and is designed as a set of OAI repositories, where each repository has an independent fail probability assigned to it. Items are inserted with a reliability that is satisfied by replicating them in subsets of repositories. Communication between the nodes (repositories) of the network is organized in a distributed hash table and multiple hash functions are used to select repositories that keep the replicas of each stored item. The OAI characteristics combined with a structured P2P digital preservation system allow the construction of a reliable and totally distributed digital library. The archiving system has been evaluated through experiments in a real environment and the OAI-PMH extension validated by the implementation of a proof-of-principle prototype.

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Section: Contributions and Results Obtainedsupporting

confidence: 56%

Section: Contributions and Results Obtainedmentioning

confidence: 98%

Section: Algorithm 4: Greedy Over Subsetmentioning

confidence: 99%

Section: Specific Selection Of Repositoriesmentioning

confidence: 99%

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