Proof of Stake Blockchain: Performance and Scalability for Groupware Communications

Jason Spasovski, Peter Eklund

Research output: Conference Article in Proceeding or Book/Report chapterArticle in proceedingsResearchpeer-review


A blockchain is a distributed transaction ledger, a disruptive technology that creates new possibilities for digital ecosystems. The blockchain ecosystem maintains an immutable transaction record to support many types of digital services. This paper compares the performance and scalability of a web-based groupware communication application using both non-blockchain and blockchain technologies. Scalability is measured where message load is synthesized over two typical communication topologies. The first is 1 to n network -- a typical client-server or star-topology with a central vertex (server) receiving all messages from the remaining n - 1 vertices (clients). The second is a more naturally occurring scale-free network topology, where multiple communication hubs are distributed throughout the network. System performance is tested with both blockchain and non-blockchain solutions using multiple cloud computing configurations. We analyze the empirical results from each configuration to identify the costs and overhead of blockchain technology.
Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Management of Digital EcoSystems : MEDES '17
PublisherAssociation for Computing Machinery
Publication date2017
ISBN (Print)978-1-4503-4895-9
Publication statusPublished - 2017


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