Struct MnemoConfig 

pub struct MnemoConfig {
    pub dimensions: usize,
    pub kdf: KdfParams,
    pub wal_pages_initial: u64,
    pub max_snapshots: usize,
}

Configuration for creating a new database.

Fields

dimensions: usize

Embedding dimensionality. Every stored vector must match this.

kdf: KdfParams

Key-derivation parameters.

wal_pages_initial: u64

Initial size of the WAL region in 8 KiB pages. Default is [DEFAULT_WAL_PAGES] (8 pages = 64 KiB), which keeps fresh files small; the region auto-grows when a transaction’s control plane needs more space, so raising this is only a hint for the expected steady-state transaction size. Write-heavy databases that routinely flush large catalogs or ANN indexes can set this higher (e.g. 64 = 512 KiB) to avoid early grow events; tiny embedded uses can leave it at the default. Clamped to a minimum of [MIN_WAL_PAGES] (2 pages).

max_snapshots: usize

Maximum number of snapshot manifest entries to retain. Each flush appends one entry; once the cap is hit, the oldest entry is dropped from the in-memory manifest before the new one is added, so the retained set is always the most-recent N. Defaults to [DEFAULT_MAX_SNAPSHOTS] (256). Set to 0 to disable the cap and retain every snapshot forever (the pre-v0.3 behavior).

Pages referenced only by pruned snapshots stay on disk until the next Mnemo::compact_file, which reclaims them. Point-in-time recovery via Mnemo::restore_to into a pruned txn_id returns MnemoError::NotFound.

Apply to an already-open database with Mnemo::set_max_snapshots.

Trait Implementations

impl Clone for MnemoConfig

fn clone(&self) -> MnemoConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MnemoConfig

impl Debug for MnemoConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MnemoConfig

fn default() -> Self

Returns the “default value” for a type.