Struct PgVectorOpts 

pub struct PgVectorOpts {
    pub half: bool,
    pub hnsw_m: Option<u32>,
    pub hnsw_ef_construction: Option<u32>,
    pub hnsw_ef_search: Option<u32>,
}

Storage precision + HNSW tuning for PgVectorIndex.

All fields default to pgvector’s own defaults, so PgVectorOpts::default() is equivalent to PgVectorIndex::new.

Fields

half: bool

Store halfvec (float16) instead of vector (float32) — ~half the RAM.

hnsw_m: Option<u32>

HNSW m (edges per node). None → pgvector default (16). Higher m raises recall and index size.

hnsw_ef_construction: Option<u32>

HNSW ef_construction (build-time candidate list). None → default (64). Higher values build a better graph, more slowly.

hnsw_ef_search: Option<u32>

hnsw.ef_search (query-time candidate list), applied to every pooled connection. None → default (40). Raise it for higher recall on large indexes; it is the main recall/latency knob at query time.

Trait Implementations

impl Clone for PgVectorOpts

fn clone(&self) -> PgVectorOpts

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PgVectorOpts

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

Formats the value using the given formatter.

impl Default for PgVectorOpts

fn default() -> PgVectorOpts

Returns the “default value” for a type.