CloudChain: A Cloud Blockchain Using Shared Memory Consensus and RDMA

【Author】 Xu, Minghui; Liu, Shuo; Yu, Dongxiao; Cheng, Xiuzhen; Guo, Shaoyong; Yu, Jiguo

【Source】IEEE TRANSACTIONS ON COMPUTERS

【影响因子】3.183

【Abstract】Blockchain technologies can enable secure computing environments among mistrusting parties. Permissioned blockchains are particularly enlightened by companies, enterprises, and government agencies due to their efficiency, customizability, and governance-friendly features. Obviously, seamlessly fusing blockchain and cloud computing can significantly benefit permissioned blockchains; nevertheless, most blockchains implemented on clouds are originally designed for loosely-coupled networks where nodes communicate asynchronously, failing to take advantages of the closely-coupled nature of cloud servers. In this paper, we propose an innovative cloud-oriented blockchain - CloudChain, which is a modularized three-layer system composed of the network layer, consensus layer, and blockchain layer. CloudChain is based on a shared-memory model where nodes communicate synchronously by direct memory accesses. We realize the shared-memory model with the Remote Direct Memory Access technology, based on which we propose a shared-memory consensus algorithm to ensure presistence and liveness, the two crucial blockchain security properties countering Byzantine nodes. We also implement a CloudChain prototype based on a RoCEv2-based testbed to experimentally validate our design, and the results verify the feasibility and efficiency of CloudChain.

【Keywords】Blockchains; Cloud computing; Computational modeling; Consensus algorithm; Fabrics; Protocols; Kernel; Blockchain; cloudchain; cloud computing; shared memory; remote direct memory access (RDMA)

【发表时间】2022 1-Dec

【收录时间】2022-12-09

【文献类型】理论模型

【主题类别】

区块链技术-核心技术-跨链与多链