Скачать или смотреть Mohammad Alizadeh — DispersedLedger: High-Throughput Byzantine Consensus on Variable Bandwidth Netw.

Mohammad Alizadeh — MIT

DispersedLedger: High-Throughput Byzantine Consensus on Variable Bandwidth Networks

The success of blockchains has given rise to large-scale deployments of Byzantine fault tolerant (BFT) consensus protocols over wide area networks. A central feature of such networks is variable communication bandwidth across nodes and across time. Bandwidth variability creates stragglers that slow down the progress of standard BFT protocols. In this talk, I will present DispersedLedger, an asynchronous BFT protocol that provides near-optimal throughput over variable bandwidth networks. The core idea of DispersedLedger is to enable nodes to propose, order, and agree on blocks of transactions without having to download their full content. To achieve consensus, nodes merely download a small fraction of a proposed block, allowing them to agree that the block is available within the network and unmalleable. Then, asynchronously, each node downloads the agreed-upon blocks at its own pace. I’ll describe DispersedLedger’s design and evaluation, including experiments on a geo-distributed Internet deployment in which DispersedLedger achieves 2x better throughput and 74% better latency than state-of-the-art asynchronous protocols.

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Science and Engineering of Consensus Workshop
https://tselab.stanford.edu/workshop-...
An affiliated workshop of The Science of Blockchain Conference 2022
https://cbr.stanford.edu/sbc22/