Struct MemoryBackend 

pub struct MemoryBackend { /* private fields */ }

In-memory backend. Satisfies Backend without writing to disk; useful for tests and for embedders that want a fully-volatile vector cache.

Implementations

impl MemoryBackend

pub fn new() -> Self

Build an empty memory backend.

Trait Implementations

impl Backend for MemoryBackend

fn put_row( &self, table: &str, key: &[u8], row: &VectorRow, ) -> Result<(), StoreError>

Persist row under (table, key). Overwrites prior values.

fn get_row( &self, table: &str, key: &[u8], ) -> Result<Option<VectorRow>, StoreError>

Fetch the row at (table, key). Returns None for a missing row.

fn delete_row(&self, table: &str, key: &[u8]) -> Result<bool, StoreError>

Remove (table, key). Returns true when present, false when absent.

fn for_each_row( &self, table: &str, f: &mut RowVisitor<'_>, ) -> Result<(), StoreError>

Iterate every (key, row) in table in unspecified order. Used to rebuild the HNSW index on startup.

fn put_schema(&self, schema: &TableSchema) -> Result<(), StoreError>

Persist a TableSchema.

fn list_schemas(&self) -> Result<Vec<TableSchema>, StoreError>

List every persisted TableSchema.

impl Default for MemoryBackend

fn default() -> MemoryBackend

Returns the “default value” for a type.