Efficient Concurrent Execution of Smart Contracts in Blockchain Sharding | |
Wang, Yan1,2; Li, Jixin1; Liu, Wansheng1; Tan, Aiping1 | |
刊名 | Security and Communication Networks |
2021 | |
卷号 | 2021页码:1-15 |
ISSN号 | 1939-0114 |
产权排序 | 1 |
英文摘要 | Throughput performance is a critical issue in blockchain technology, especially in blockchain sharding systems. Although sharding proposals can improve transaction throughput by parallel processing, the essence of each shard is still a small blockchain. Using serial execution of smart contract transactions, performance has not significantly improved, and there is still room for improvement. A smart contract concurrent execution strategy based on concurrency degree optimization is proposed for performance optimization within a single shard. This strategy is applied to each shard. First, it characterizes the conflicting contract feature information by executing a smart contract, analyzing the factors that affect the concurrent execution of the smart contracts, and clustering the contract transaction. Second, in shards with high transaction frequency, considering the execution time, conflict rate, and available resources of contract transactions, finding a serializable schedule of contract transactions by redundant computation and a Variable Shadow Speculative Concurrency Control (SCC-VS) algorithm for smart contract scheduling is proposed. Finally, experimental results show that the strategy increases the concurrency of smart contract execution by 39% on average and the transaction throughput of the whole system by 21% on average. |
资助项目 | National Key R&D Program of China[2019YFB1406002] ; National Natural Science Foundation of China[61903356] ; Key Scientific Research Projects of Liaoning Provincial Department of Education[LZD202002] |
WOS研究方向 | Computer Science ; Telecommunications |
语种 | 英语 |
WOS记录号 | WOS:000625189800003 |
资助机构 | National Key R&D Program of China (2019YFB1406002) ; National Natural Science Foundation of China (61903356) ; Key Scientific Research Projects of Liaoning Provincial Department of Education (LZD202002) |
内容类型 | 期刊论文 |
源URL | [http://ir.sia.cn/handle/173321/28497] |
专题 | 沈阳自动化研究所_机器人学研究室 |
通讯作者 | Tan, Aiping |
作者单位 | 1.College of Information, Liaoning University, Shenyang 110036, China 2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China |
推荐引用方式 GB/T 7714 | Wang, Yan,Li, Jixin,Liu, Wansheng,et al. Efficient Concurrent Execution of Smart Contracts in Blockchain Sharding[J]. Security and Communication Networks,2021,2021:1-15. |
APA | Wang, Yan,Li, Jixin,Liu, Wansheng,&Tan, Aiping.(2021).Efficient Concurrent Execution of Smart Contracts in Blockchain Sharding.Security and Communication Networks,2021,1-15. |
MLA | Wang, Yan,et al."Efficient Concurrent Execution of Smart Contracts in Blockchain Sharding".Security and Communication Networks 2021(2021):1-15. |
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