PVP: Practical View-Change-Less Protocol

PVP is a high-throughput consensus protocol that provides a stable and low latency in all cases, has a simple and lightweight recovery step incorporated in the normal commitment path, and can deal with unreliable communication. PVP does so by combining a chained consensus design, which can replicate requests with a reduced message complexity and that uses a novel Rapid View Synchronization protocol to enable robust and low-cost failure recovery, with a high-performance concurrent consensus architecture in which independent instances of the chained consensus can operate concurrently to process requests with high throughput and without single-replica bottlenecks.