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DELTA: A Modular, Transparent and Efficient Synchronization of DLTs and Databases
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  • F. Javier Fernández-Bravo Peñuela,
  • Jordi Arjona Aroca,
  • Francesc D. Muñoz-Escoí,
  • Yuriy Yatsyk Gavrylyak,
  • Ismael Illán García,
  • José M. Bernabéu-Aubán
F. Javier Fernández-Bravo Peñuela
Instituto Tecnologico de Informatica

Corresponding Author:[email protected]

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Jordi Arjona Aroca
Instituto Tecnologico de Informatica
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Francesc D. Muñoz-Escoí
Universitat Politecnica de Valencia Departament de Sistemes Informatics i Computacio
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Yuriy Yatsyk Gavrylyak
Instituto Tecnologico de Informatica
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Ismael Illán García
Instituto Tecnologico de Informatica
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José M. Bernabéu-Aubán
Universitat Politecnica de Valencia Departament de Sistemes Informatics i Computacio
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Abstract

Besides cryptocurrencies, DLTs may be also exploited in enterprise systems operated by a consortium of organizations. Their interaction takes usually place on a permissioned blockchain network that holds a set of data to be queried frequently. In this scope, the main problem of DLTs is their unsuitability for a fast service of complex queries on those data. In order to solve this issue, many proposals dump the ledger contents onto databases that, because of their own goals and design, are already optimized for the execution of those queries. Unfortunately, many of those proposals assume that the data to be queried consist in only a block or (cryptocurrency-related) transaction history. However, those organization consortiums commonly store other structured business-related information in the DLT, and there is an evident lack of support for querying that other kind of structured data. To remedy those problems, DELTA synchronizes, with minimal overhead, the DLT state into a database, providing: (1) a modular architecture with event-based handling of DLT updates that supports different DLTs and databases, (2) a transparent management, since DLT end users do not need to learn or use any new API in order to handle that synchronization (i.e., those users still rely on the original interface provided by their chosen DLT), (3) the efficient execution of complex queries on those structured data. Thus, DELTA reduces query times up to five orders of magnitude, depending on the DLT and the database, compared to queries directed to the ledger nodes.
04 Sep 2023Submitted to International Journal of Network Management
05 Sep 2023Assigned to Editor
05 Sep 2023Submission Checks Completed
15 Sep 2023Review(s) Completed, Editorial Evaluation Pending
27 Sep 2023Reviewer(s) Assigned