Network Churn Limit

Definition ∞ A network churn limit is a protocol-imposed restriction on the rate at which validators can join or leave a proof-of-stake blockchain network. This limit is designed to maintain network stability and security by preventing sudden, large-scale shifts in the validator set. It ensures a consistent number of active participants are available to validate transactions and secure the chain. Excessive churn could destabilize consensus and compromise network integrity.
Context ∞ The network churn limit is a key parameter in discussions about the operational resilience and decentralization of proof-of-stake blockchains, such as Ethereum. News often reports on adjustments to this limit following major protocol upgrades or in response to observed network behavior. The ongoing debate involves optimizing this limit to balance network security with validator flexibility and overall participation.