Definition ∞ Fault tolerance thresholds represent the maximum number of failures or malicious actors a distributed system can withstand while still maintaining its correct operation and integrity. In blockchain systems, this refers to the proportion of compromised nodes or faulty processes that the consensus mechanism can tolerate without breaking down. Exceeding these thresholds can lead to network instability, data inconsistencies, or security breaches. These thresholds are a critical measure of a system’s robustness.
Context ∞ Fault tolerance thresholds are a fundamental metric for evaluating the security and reliability of blockchain protocols, especially in the context of Byzantine Fault Tolerance (BFT) systems. Discussions often revolve around the practical limits of decentralization and the trade-offs between higher fault tolerance and network performance. News reports on network attacks or vulnerabilities frequently refer to these thresholds, underscoring their importance in preventing systemic failures.
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