Definition ∞ BFT scalability refers to the capacity of a Byzantine Fault Tolerant consensus protocol to maintain performance as the number of participating nodes increases. BFT protocols are designed to function correctly even if some network participants act maliciously. Scalability in this context measures how well the protocol’s throughput and latency hold up under a growing number of validators without degrading security. It is a key metric for enterprise and permissioned blockchain networks.
Context ∞ Improving BFT scalability is a primary research area for many distributed ledger technologies, especially those aiming for high transaction volumes. Current challenges often involve the communication overhead that grows with more participants, impacting block finality and overall network efficiency. Innovations in BFT algorithms seek to optimize message complexity to allow for larger, more decentralized networks.
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