async fn add(&mut self, record: VectorRecord) -> Result<String>

async fn search(&self, query_embedding: &[f32], limit: usize) -> Result<Vec<SearchResultItem>>

async fn get(&self, id: &str) -> Result<Option<VectorRecord>>

async fn delete(&mut self, id: &str) -> Result<bool>

async fn get_all(&self, limit: usize) -> Result<Vec<VectorRecord>>

async fn clear(&mut self) -> Result<()>

fn len(&self) -> usize

fn is_empty(&self) -> bool