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Open AccessArticle

A Scalable and Semantic Data as a Service Marketplace for Enhancing Cloud-Based Applications

1
School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
2
Department of Informatics and Telematics, Harokopio University of Athens, 17778 Athens, Greece
*
Author to whom correspondence should be addressed.
Future Internet 2020, 12(5), 77; https://doi.org/10.3390/fi12050077
Received: 31 March 2020 / Revised: 22 April 2020 / Accepted: 23 April 2020 / Published: 25 April 2020
(This article belongs to the Special Issue Network Cost Reduction in Cloud/Fog Computing Environments)
Data handling and provisioning play a dominant role in the structure of modern cloud–fog-based architectures. Without a strict, fast, and deterministic method of exchanging data we cannot be sure about the performance and efficiency of transactions and applications. In the present work we propose an architecture for a Data as a Service (DaaS) Marketplace, hosted exclusively in a cloud environment. The architecture includes a storage management engine that ensures the Quality of Service (QoS) requirements, a monitoring component that enables real time decisions about the resources used, and a resolution engine that provides semantic data discovery and ranking based on user queries. We show that the proposed system outperforms the classic ElasticSearch queries in data discovery use cases, providing more accurate results. Furthermore, the semantic enhancement of the process adds extra results which extend the user query with a more abstract definition to each notion. Finally, we show that the real-time scaling, provided by the data storage manager component, limits QoS requirements by decreasing the latency of the read and write data requests. View Full-Text
Keywords: cloud; fog; mongodb; daas; data as a service; performance analysis; qos ensurance; content discovery; qos monitoring cloud; fog; mongodb; daas; data as a service; performance analysis; qos ensurance; content discovery; qos monitoring
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MDPI and ACS Style

Psomakelis, E.; Nikolakopoulos, A.; Marinakis, A.; Psychas, A.; Moulos, V.; Varvarigou, T.; Christou, A. A Scalable and Semantic Data as a Service Marketplace for Enhancing Cloud-Based Applications. Future Internet 2020, 12, 77. https://doi.org/10.3390/fi12050077

AMA Style

Psomakelis E, Nikolakopoulos A, Marinakis A, Psychas A, Moulos V, Varvarigou T, Christou A. A Scalable and Semantic Data as a Service Marketplace for Enhancing Cloud-Based Applications. Future Internet. 2020; 12(5):77. https://doi.org/10.3390/fi12050077

Chicago/Turabian Style

Psomakelis, Evangelos; Nikolakopoulos, Anastasios; Marinakis, Achilleas; Psychas, Alexandros; Moulos, Vrettos; Varvarigou, Theodora; Christou, Andreas. 2020. "A Scalable and Semantic Data as a Service Marketplace for Enhancing Cloud-Based Applications" Future Internet 12, no. 5: 77. https://doi.org/10.3390/fi12050077

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