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2017 IEEE International Conference on Software Architecture (ICSA) (2017)
Gothenburg, Sweden
April 3, 2017 to April 7, 2017
ISBN: 978-1-5090-5729-0
pp: 253-256
Blockchain is an emerging technology for sharing transactional data and computation without using a central trusted third party. It is an architectural choice to use a blockchain instead of traditional databases or protocols, and this creates trade-offs between non-functional requirements such as performance, cost, and security. However, little is known about predicting the behaviour of blockchain-based systems. This paper shows the feasibility of using architectural performance modelling and simulation tools to predict the latency of blockchain-based systems. We use established tools and techniques, but explore new blockchain-specific issues such as the configuration of the number of confirmation blocks and inter-block times. We report on a lab-based experimental study using an incident management system, showing predictions of median system level response time with a relative error mostly under 10%. We discuss how the approach can be used to support architectural decision-making, during the design of blockchain-based systems.
Benchmark testing, Predictive models, Contracts, Time measurement, Databases, Decision making

R. Yasaweerasinghelage, M. Staples and I. Weber, "Predicting Latency of Blockchain-Based Systems Using Architectural Modelling and Simulation," 2017 IEEE International Conference on Software Architecture (ICSA), Gothenburg, Sweden, 2017, pp. 253-256.
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