Architecting Low‑Latency Consensus Protocols for High‑Performance State Machine Replication in Distributed Ledger Environments
Introduction Distributed ledgers—whether public blockchains, permissioned networks, or hybrid hybrids—rely on state machine replication (SMR) to provide a consistent view of the ledger across a set of potentially unreliable nodes. At the heart of SMR lies a consensus protocol that decides the order of transactions, guarantees safety (no two honest nodes diverge) and liveness (the system eventually makes progress), and does so under real‑world constraints such as network latency, message loss, and Byzantine behavior. ...