International Journal of Blockchains and Cryptocurrencies
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International Journal of Blockchains and Cryptocurrencies (1 paper in press)
ChainElastic: A Cloud Computing Resource Elasticity Model for IoT-based Blockchain Applications by Rodrigo Da Rosa Righi, Cristiano André Costa, Vinicius F. Rodrigues, Alex Roehrs, Josué Valtair Silva e Silva Abstract: Internet of Things (IoT) environments are composed of a changing number of devices that produce data events at different rates The development of Blockchain solutions for such environments characterizes an emerging trend of applications, thus requiring the system to be scalable However, the existing proposals to improve the Blockchain scalability bring a series of changes that are not compatible with todays applications Therefore, we perceive that there are no alternatives to address Blockchain scalability without changing the Blockchain protocol itself, so reflecting on lack of portability In context, this article proposes ChainElastic, a cloud elasticity model to run Blockchain IoT applications in a private cloud with automatic resource reorganization We developed a prototype that runs over the OpenNebula cloud, highlighting the benefits of using elasticity in terms of resource consumption, latency, and execution time The experiments demonstrate gains of 39 64% in resource consumption with the ChainElastic model. Keywords: Blockchain;Internet of Things;Cloud Computing;Cloud Elasticity.