FnF-BFT: Exploring Performance Limits of BFT Protocols
| Autor: | Avarikioti, Zeta, Heimbach, Lioba, Schmid, Roland, Vanbever, Laurent, Wattenhofer, Roger, Wintermeyer, Patrick |
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| Rok vydání: | 2020 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We introduce FnF-BFT, a parallel-leader byzantine fault-tolerant state-machine replication protocol for the partially synchronous model with theoretical performance bounds during synchrony. By allowing all replicas to act as leaders and propose requests independently, FnF-BFT parallelizes the execution of requests. Leader parallelization distributes the load over the entire network -- increasing throughput by overcoming the single-leader bottleneck. We further use historical data to ensure that well-performing replicas are in command. FnF-BFT's communication complexity is linear in the number of replicas during synchrony and thus competitive with state-of-the-art protocols. Finally, with FnF-BFT, we introduce a BFT protocol with performance guarantees in stable network conditions under truly byzantine attacks. A prototype implementation of \prot outperforms (state-of-the-art) HotStuff's throughput, especially as replicas increase, showcasing \prot's significantly improved scaling capabilities. Comment: 31 pages, 25 figures (including algorithms) |
| Databáze: | arXiv |
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