REDONDA: A Next-Generation State-Machine Replication Protocol for Blockchain

REDONDA项目的目标是为区块链设计下一代复制协议。为了实现这一目标，该项目利用了网络、安全计算和分布式系统方面的最新进展。在数据中心的规模上，该协议依赖于两种最新技术：RDMA和TEE。这两种技术都被用来创建一个亚微秒的共识层，以容忍拜占庭式故障。tee还用于一种新型的可升级和便携式智能合约引擎，以跨各种基础设施和硬件执行区块链交易。在数据中心之间，该协议依赖于无领导状态机复制。这种最新的方法将事务排序分解为两个可以并行执行的子任务，而不需要中央协调器来瓶颈系统。为了确保运行时的安全性，REDONDA项目通过组合经过机械验证的构建块来创建区块链协议。新的区块链协议使用真实硬件对基准测试和公开可用的跟踪进行评估。我们的目标是它可以扩展到数百个地理分布式节点，同时提供每秒100k+事务和秒级延迟。

The REDONDA project's ambition is to design a next-generation replication protocol for blockchain. To achieve this, the project taps into recent advances in networking, secure computing and distributed systems. At the scale of a datacenter, the protocol relies on two recent technologies: RDMA and TEE. Both technologies are leveraged to create a sub-microsecond consensus layer that tolerates Byzantine failures. TEEs are also used in a novel upgradable and portable smart contract engine to execute blockchain transactions across a variety of infrastructures and hardware. Between data centres, the protocol relies on leaderless state-machine replication. This recent approach decomposes transaction ordering into two sub-tasks that can execute in parallel, without a central coordinator to bottleneck the system. To ensure security and safety at runtime, the REDONDA project creates the blockchain protocol by composing mechanically-verified building blocks. The new blockchain protocol is assessed using real hardware against benchmarks and publicly available traces. We target that it scales across hundreds of geo-distributed nodes while offering 100k+ transactions per second and split-second latency.