Enum cumulus_client_consensus_common::LevelLimit

pub enum LevelLimit {
    Default,
    None,
    Some(usize),
}

Upper bound to the number of leaves allowed for each level of the blockchain.

If the limit is set and more leaves are detected on block import, then the older ones are dropped to make space for the fresh blocks.

In environments where blocks confirmations from the relay chain may be “slow”, then setting an upper bound helps keeping the chain health by dropping old (presumably) stale leaves and prevents discarding new blocks because we’ve reached the backend max value.

Variants

Default

Limit set to MAX_LEAVES_PER_LEVEL_SENSIBLE_DEFAULT.

None

No explicit limit, however a limit may be implicitly imposed by the backend implementation.

Some(usize)

Custom value.