Synchronous Safety

Definition ∞ Synchronous safety ensures all honest nodes in a distributed system maintain a consistent view of the ledger at all times. This property guarantees that if an honest node observes a transaction, all other honest nodes will eventually observe the same transaction in the same order, within a defined time bound. It implies strong consistency and agreement among participants, even in the presence of faulty nodes. Synchronous safety is a stringent requirement for systems where absolute data integrity and immediate agreement are paramount.
Context ∞ Achieving synchronous safety is a primary design goal for many BFT-based consensus protocols, particularly in permissioned blockchain environments where predictability and strong finality are prioritized. The challenge lies in maintaining this property while simultaneously aiming for high performance and scalability. Ongoing research explores mechanisms to relax strict synchrony assumptions without compromising essential security guarantees, seeking practical compromises for real-world applications.