Consistency and availability of Data in replicated NoSQL databases

Tadeusz Pankowski

doi:10.5220/0005368101020109

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Title

Consistency and availability of Data in replicated NoSQL databases

Authors

Tadeusz Pankowski (WE) ^{[ 1 ][ P ]}

^{[ 1 ]} Instytut Automatyki i Inżynierii Informatycznej, Wydział Elektryczny, Politechnika Poznańska | ^{[ P ]} employee

Year of publication

2015

Chapter type

paper

Publication language

english

Keywords

EN

replicated data repositories
strong consistency
eventual consistency
consensus quorum algorithms

Abstract

EN Highly distributed NoSQL key-value databases have been designed to meet the needs of various applications in the field of social networks, Web search and e-commerce. High availability, fault tolerance and scalability (i.e. Quality of Service, QoS) of such systems is in conflict with the strong consistency (Quality of Data, QoD). Thus, a new functionality of services, balancing QoS and QoD, is needed. This functionality is referred as Service Level Agreements, SLA) (Terry et al., 2013). We present a system Lorq as a proposal of a solution to this problem. Lorq is a consensus quorum based algorithm for NoSQL data replication. In this paper, we discuss how different consistency levels are guaranteed by Lorq.

Pages (from - to)

102 - 109

DOI

10.5220/0005368101020109

URL

https://ieeexplore.ieee.org/document/7320342

Book

10th International Conference on Evaluation of Novel Approaches to Software Engineering (ENASE), Barcelona, Spain, 29-30 April, 2015

Presented on

10th International Conference on Evaluation of Novel Approaches to Software Engineering, ENASE 2015, 29-30.04.2015, Barcelona, Spain

License type

CC BY-NC-ND (attribution - noncommercial - no derivatives)