当网络变坏时做好准备：一个异步视图更改协议
Be Prepared When Network Goes Bad: An Asynchronous View-Change Protocol
摘要：
许可区块链系统的普及需要BFT SMR协议在良好的网络条件下（同步）有效，在不良的网络条件下（同步）健壮。最先进的部分同步BFT SMR协议在同步和好的领导者下提供最优的线性通信成本，但在同步下失去活性。另一方面，最先进的异步BFT SMR协议即使在同步下也是有效的，但即使在同步下也总是付出二次代价。在本文中，我们提出了一个BFT SMR协议，实现了两全其美-最佳的线性成本下的良好的网络和领导者，最佳的二次成本下的坏网络下的每一个决定，并始终活着。
英文摘要：
The popularity of permissioned blockchain systems demands BFT SMR protocols that are efficient under good network conditions (synchrony) and robust under bad network conditions (asynchrony). The state-of-the-art partially synchronous BFT SMR protocols provide optimal linear communication cost per decision under synchrony and good leaders, but lose liveness under asynchrony. On the other hand, the state-of-the-art asynchronous BFT SMR protocols are live even under asynchrony, but always pay quadratic cost even under synchrony. In this paper, we propose a BFT SMR protocol that achieves the best of both worlds -- optimal linear cost per decision under good networks and leaders, optimal quadratic cost per decision under bad networks, and remains always live.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
