LightDAG: A Low-latency DAG-based BFT Consensus through Lightweight Broadcast

ePrint Report: LightDAG: A Low-latency DAG-based BFT Consensus through Lightweight Broadcast

Xiaohai Dai, Guanxiong Wang, Jiang Xiao, Zhengxuan Guo, Rui Hao, Xia Xie, Hai Jin

To improve the throughput of Byzantine Fault Tolerance (BFT) consensus protocols, the Directed Acyclic Graph (DAG) topology has been introduced to parallel data processing, leading to the development of DAG-based BFT consensus. However, existing DAG-based works heavily rely on Reliable Broadcast (RBC) protocols for block broadcasting, which introduces significant latency due to the three communication …

broadcast dai data data processing eprint report graph latency low parallel protocols report tolerance wang