Why is the first query on each request so slow?

query: 356.14ms
query2: 6.166ms
query: 51.136ms
query2: 4.249ms
query: 47.58ms
query2: 2.664ms
query: 47.062ms
query2: 2.383ms
query: 51.787ms
query2: 3.194ms

import { Pool } from "pg";
import { drizzle } from "drizzle-orm/node-postgres";
import { env } from "~/env.mjs";

const pool = new Pool({
  connectionString: env.DATABASE_URL,
});

export const db = drizzle(pool);