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Details

  • Name

    Fábio Luís Silva
  • Role

    Research Assistant
  • Since

    20th February 2019
  • Nationality

    Portugal
  • Contacts

    +351253604440
    fabio.l.silva@inesctec.pt
Publications

2020

A Comparison of Message Exchange Patterns in BFT Protocols: (Experience Report)

Authors
Silva, F; Alonso, A; Pereira, J; Oliveira, R;

Publication
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abstract
The performance and scalability of byzantine fault-tolerant (BFT) protocols for state machine replication (SMR) have recently come under scrutiny due to their application in the consensus mechanism of blockchain implementations. This led to a proliferation of proposals that provide different trade-offs that are not easily compared as, even if these are all based on message passing, multiple design and implementation factors besides the message exchange pattern differ between each of them. In this paper we focus on the impact of different combinations of cryptographic primitives and the message exchange pattern used to collect and disseminate votes, a key aspect for performance and scalability. By measuring this aspect in isolation and in a common framework, we characterise the design space and point out research directions for adaptive protocols that provide the best trade-off for each environment and workload combination. © IFIP International Federation for Information Processing 2020.