Mediation of Lazy Update Propagation in a Replicated Database over a Decentralized P2P Architecture

1
Katembo Kituta Ezechiel
Katembo Kituta Ezechiel
2
Katembo Kituta Ezéchiel
Katembo Kituta Ezéchiel
3
Shri Kant
Shri Kant
4
Ruchi Agarwal
Ruchi Agarwal
1 to 2 Sharda University

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While replicating data over a decentralized Peer-to-Peer (P2P) network, transactions broadcasting updates arising from different peers run simultaneously so that a destination peer replica can be updated concurrently, that always causes transaction and data conflicts. Moreover, during data migration, connectivity interruption and network overload corrupt running transactions so that destination peers can experience duplicated data or improper data or missing data, hence replicas remain inconsistent. Different methodological approaches have been combined to solve these problems: the audit log technique to capture the changes made to data; the algorithmic method to design and analyse algorithms and the statistical method to analyse the performance of new algorithms and to design prediction models of the execution time based on other parameters. A Graphical User Interface software as prototype, have been designed with C #, to implement these new algorithms to obtain a database synchronizer-mediator. A stream of experiments, showed that the new algorithms were effective. So, the hypothesis according to which “The execution time of replication and reconciliation transactions totally depends on independent factors.” has been confirmed.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

Katembo Kituta Ezechiel. 2019. \u201cMediation of Lazy Update Propagation in a Replicated Database over a Decentralized P2P Architecture\u201d. Global Journal of Computer Science and Technology - C: Software & Data Engineering GJCST-C Volume 19 (GJCST Volume 19 Issue C3): .

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Crossref Journal DOI 10.17406/gjcst

Print ISSN 0975-4350

e-ISSN 0975-4172

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GJCST-C Classification: C.2.4
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December 9, 2019

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English

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While replicating data over a decentralized Peer-to-Peer (P2P) network, transactions broadcasting updates arising from different peers run simultaneously so that a destination peer replica can be updated concurrently, that always causes transaction and data conflicts. Moreover, during data migration, connectivity interruption and network overload corrupt running transactions so that destination peers can experience duplicated data or improper data or missing data, hence replicas remain inconsistent. Different methodological approaches have been combined to solve these problems: the audit log technique to capture the changes made to data; the algorithmic method to design and analyse algorithms and the statistical method to analyse the performance of new algorithms and to design prediction models of the execution time based on other parameters. A Graphical User Interface software as prototype, have been designed with C #, to implement these new algorithms to obtain a database synchronizer-mediator. A stream of experiments, showed that the new algorithms were effective. So, the hypothesis according to which “The execution time of replication and reconciliation transactions totally depends on independent factors.” has been confirmed.

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Mediation of Lazy Update Propagation in a Replicated Database over a Decentralized P2P Architecture

Katembo Kituta Ezéchiel
Katembo Kituta Ezéchiel Sharda University
Shri Kant
Shri Kant
Ruchi Agarwal
Ruchi Agarwal

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