Struct Config 

pub struct Config<E, K, V, T, D, C>
where
    E: Storage + Metrics,
    K: Array,
    V: Codec,
    T: Translator,
    D: Digest,
{
    pub db_config: Config<T, C>,
    pub log: Journal<E, Variable<K, V>>,
    pub lower_bound: u64,
    pub upper_bound: u64,
    pub pinned_nodes: Option<Vec<D>>,
    pub apply_batch_size: usize,
}

Configuration for syncing an immutable::Immutable to a target state.

Fields

db_config: Config<T, C>

Database configuration.

log: Journal<E, Variable<K, V>>

The immutable::Immutable’s log of operations. It has elements from lower_bound to upper_bound, inclusive. Reports lower_bound as its pruning boundary (oldest retained operation index).

lower_bound: u64

Sync lower boundary (inclusive) - operations below this index are pruned.

upper_bound: u64

Sync upper boundary (inclusive) - operations above this index are not synced.

pinned_nodes: Option<Vec<D>>

The pinned nodes the MMR needs at the pruning boundary given by lower_bound, in the order specified by Proof::nodes_to_pin. If None, the pinned nodes will be computed from the MMR’s journal and metadata, which are expected to have the necessary pinned nodes.

apply_batch_size: usize

The maximum number of operations to keep in memory before committing the database while applying operations. Higher value will cause more memory usage during sync.