Enum IndexKind 

#[non_exhaustive]
pub enum IndexKind {
    Hnsw,
    IvfFlat,
}

ANN index kind. HNSW is the production default; IVFFlat is selected when build time matters more than query latency.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Hnsw

Hierarchical Navigable Small World — pgvector’s HNSW. Best recall / throughput trade-off for ≤10M vectors per namespace.

IvfFlat

IVF-Flat — fast build, lower memory at the cost of recall. Operators must SET ivfflat.probes = N per session for query-time recall tuning.

Trait Implementations

impl Clone for IndexKind

fn clone(&self) -> IndexKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexKind

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

Formats the value using the given formatter.

impl Default for IndexKind

fn default() -> IndexKind

Returns the “default value” for a type.

impl PartialEq for IndexKind

fn eq(&self, other: &IndexKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for IndexKind

impl Eq for IndexKind

impl StructuralPartialEq for IndexKind