import { Pool } from "pg";

/** One pool per process, unlike ai-service's Postgres adapter (which opens a
 * connection per call — see its own docstring on why that's a known, not-yet
 * fixed gap there). Node's `pg.Pool` makes per-request pooling the default,
 * cheap way to do this correctly from the start rather than inheriting that
 * same gap in a second language. */
export function createPool(dsn: string): Pool {
  return new Pool({ connectionString: dsn, connectionTimeoutMillis: 5000 });
}