Optimal Endorsement for Network-Wide Distributed Blockchains

【Author】 Lotfimahyari, Iman; Giaccone, Paolo

【Source】IEEE SYSTEMS JOURNAL

【影响因子】4.802

【Abstract】Blockchains offer trust and immutability in nontrusted environments, but most are not fast enough for latency-sensitive applications. Hyperledger fabric (HF) is a common enterprise-level platform that is being offered as blockchain-as-a-service by cloud providers. In HF, every new transaction requires a preliminary endorsement by multiple mutually untrusted parties called organizations, which contributes to the delay in storing the transaction in the blockchain. The endorsement policy is specific to each application and defines the required approvals by the endorser peers (EPs) of the involved organizations. In this article, given an input endorsement policy, we studied the optimal choice to distribute the endorsement requests to the proper EPs. We proposed the OPtimal ENdorsement (OPEN) algorithm, devised to minimize the latency due to both network delays and the processing times at the EPs. By extensive simulations, we showed that OPEN can reduce the endorsement latency up to 70% compared to the state-of-the-art solution and approximated well the introduced optimal policies while offering a negligible implementation overhead compared to them.

【Keywords】Blockchains; endorsement policy; hyperledger fabric (HF)

【发表时间】2023 2023 JUL 3

【收录时间】2023-07-31

【文献类型】实验仿真

【主题类别】

区块链技术-核心技术-共识机制