志愿云環(huán)境下的拜占庭容錯研究
發(fā)布時間:2019-03-05 07:48
【摘要】:志愿云環(huán)境下的節(jié)點具有動態(tài)性高、可靠度低的特點,系統(tǒng)容易出現(xiàn)拜占庭錯誤。拜占庭一致性算法可使系統(tǒng)在出現(xiàn)f個惡意節(jié)點時保證一致性,但現(xiàn)有算法冗余度較高。針對該問題,提出一種基于Gossip協(xié)議的拜占庭容錯算法,使系統(tǒng)冗余度降低到2f+1。該算法無需設計主節(jié)點,所有計算節(jié)點處于對等地位,可避免主從模式冗余系統(tǒng)發(fā)生單點故障。理論分析和實驗結(jié)果表明,所提算法能達到拜占庭容錯要求,有效減小系統(tǒng)冗余度,與BFTCloud和Zyzzyva算法相比,提升了系統(tǒng)吞吐量。
[Abstract]:The nodes in volunteer cloud environment have the characteristics of high dynamic and low reliability, and the system is prone to Byzantine errors. Byzantine consistency algorithm can ensure consistency in the presence of f malicious nodes, but the existing algorithms are highly redundant. In order to solve this problem, a Byzantine fault tolerant algorithm based on Gossip protocol is proposed to reduce the redundancy of the system to 2F1. The algorithm does not need to design master nodes and all computing nodes are in a peer-to-peer position to avoid a single point of failure in redundant systems in master-slave mode. The theoretical analysis and experimental results show that the proposed algorithm can meet the requirements of Byzantine fault tolerance and effectively reduce the redundancy of the system. Compared with the BFTCloud and Zyzzyva algorithms, the proposed algorithm improves the throughput of the system.
【作者單位】: 湖南大學信息科學與工程學院;
【基金】:國家自然科學基金資助項目“面向云存儲的多元數(shù)據(jù)安全查詢機制和算法研究”(61472125)
【分類號】:TP393.09
本文編號:2434682
[Abstract]:The nodes in volunteer cloud environment have the characteristics of high dynamic and low reliability, and the system is prone to Byzantine errors. Byzantine consistency algorithm can ensure consistency in the presence of f malicious nodes, but the existing algorithms are highly redundant. In order to solve this problem, a Byzantine fault tolerant algorithm based on Gossip protocol is proposed to reduce the redundancy of the system to 2F1. The algorithm does not need to design master nodes and all computing nodes are in a peer-to-peer position to avoid a single point of failure in redundant systems in master-slave mode. The theoretical analysis and experimental results show that the proposed algorithm can meet the requirements of Byzantine fault tolerance and effectively reduce the redundancy of the system. Compared with the BFTCloud and Zyzzyva algorithms, the proposed algorithm improves the throughput of the system.
【作者單位】: 湖南大學信息科學與工程學院;
【基金】:國家自然科學基金資助項目“面向云存儲的多元數(shù)據(jù)安全查詢機制和算法研究”(61472125)
【分類號】:TP393.09
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