Index Stores

Index stores are underlying storage components that contain metadata(i.e. information created when indexing) about the index itself.

Available Index Stores

• SimpleIndexStore: A simple in-memory index store with support for persisting data to disk.
• PostgresIndexStore: A PostgreSQL index store, , see PostgreSQL Storage.

Check the LlamaIndexTS Github for the most up to date overview of integrations.

Using PostgreSQL as Index Store

npm install llamaindex @llamaindex/postgres

You can configure the schemaName, tableName, namespace, and connectionString. If a connectionString is not provided, it will use the environment variables PGHOST, PGUSER, PGPASSWORD, PGDATABASE and PGPORT.

import { Document, VectorStoreIndex, storageContextFromDefaults } from "llamaindex";
import { PostgresIndexStore } from "@llamaindex/postgres";
 
const storageContext = await storageContextFromDefaults({
  indexStore: new PostgresIndexStore(),
});

API Reference

• BaseIndexStore