PostgreSQL

PostgreSQL is a powerful, open-source relational database management system known for its advanced features, extensibility, and support for complex queries and large datasets. Read more here.

Example Usage

Make sure you have PostgreSQL installed and configured. Then, you can connect it straight into Better Auth.

import { betterAuth } from "better-auth";
import { Pool } from "pg";

export const auth = betterAuth({
  database: new Pool({
    connectionString: "postgres://user:password@localhost:5432/database",
  }),
});

Schema generation & migration

The Better Auth CLI allows you to generate or migrate your database schema based on your Better Auth configuration and plugins.

npx @better-auth/cli@latest generate

npx @better-auth/cli@latest migrate

Use a non-default schema

In most cases, the default schema is public. To have Better Auth use a non-default schema (e.g., auth) for its tables, set the PostgreSQL user's default schema before generating or migrating:

ALTER USER authuser SET SEARCH_PATH TO auth;

alternatively, append the option to your connection URI, for example:

postgres://<DATABASE_URL>?option=-c search_path=auth

URL-encode if needed: ?option=-c%20search_path%3Dauth.

Ensure the target schema exists and the database user has the required permissions.

Additional Information

PostgreSQL is supported under the hood via the Kysely adapter, any database supported by Kysely would also be supported. (Read more here)

If you're looking for performance improvements or tips, take a look at our guide to performance optimizations.