Churn Limit

Definition ∞ A churn limit establishes a maximum rate at which validators can join or exit the active set in a proof-of-stake blockchain network. This mechanism helps maintain network stability by preventing rapid, large-scale changes in the validator composition. It ensures consistent block production and prevents malicious actors from quickly dominating the network through mass staking or unstaking. This limit is crucial for preserving the integrity and operational security of the distributed ledger.
Context ∞ The churn limit is a significant technical parameter, particularly relevant for understanding the security and decentralization of proof-of-stake blockchains like Ethereum. News regarding adjustments to this limit often relates to network upgrades or discussions about balancing validator participation with overall network robustness. A higher limit might promote decentralization but could introduce instability, while a lower limit enhances stability at the cost of slower validator set adjustments.