A Comprehensive Survey on Sharding in Blockchains

【Author】 Xi, Jinwen; Zou, Shihong; Xu, Guoai; Guo, Yanhui; Lu, Yueming; Xu, Jiuyun; Zhang, Xuanwen

【Source】MOBILE INFORMATION SYSTEMS

【影响因子】1.863

【Abstract】Blockchain technology has been widely used in many fields, such as smart cities, smart health care, and smart manufacturing, due to its anonymity, decentralization, and tamper resistance in peer-to-peer (P2P) networks. However, poor scalability has severely affected the widespread adoption of traditional blockchain technology in high-throughput and low-latency applications. Therefore, based on the three-layer architecture, this study presents a variety of solutions to improve the scalability of the blockchain. As the scale of the network expands, one of the most practical ways to achieve horizontal scalability is sharding, where the network is divided into multiple subnetworks to avoid repeated communication overhead, storage, and calculations. This study provides a systematic and comprehensive introduction to blockchain sharding, along with a detailed comparison and evaluation for primarily considered sharding mechanisms. We also provide the detailed calculations and then analyze the characteristics of existing solutions along with our insights.

【Keywords】

【发表时间】2021 18-Dec

【收录时间】2022-03-30

【文献类型】综述

【主题类别】

综述-综述-