Use Neon's Serverless Postgres with Bun

Neon is a fully managed serverless Postgres. Neon separates compute and storage to offer features such as autoscaling, branching, and bottomless storage.

Get started by creating a project directory, initializing the directory using bun init, and adding the Neon serverless driver as a project dependency.

$ mkdir bun-neon-postgres
$ cd bun-neon-postgres
$ bun init -y
$ bun add @neondatabase/serverless

Create a .env.local file and add your Neon Postgres connection string to it.

DATABASE_URL=postgresql://usertitle:password@ep-adj-noun-guid.us-east-1.aws.neon.tech/neondb?sslmode=require

Paste the following code into your project's index.ts file.

import { neon } from "@neondatabase/serverless";

// Bun automatically loads the DATABASE_URL from .env.local
// Refer to: https://bun.com/docs/runtime/environment-variables for more information
const sql = neon(process.env.DATABASE_URL);

const rows = await sql`SELECT version()`;

console.log(rows[0].version);

Start the program with bun ./index.ts. It prints the Postgres version to the console.

$ bun ./index.ts

PostgreSQL 16.2 on x86_64-pc-linux-gnu, compiled by gcc (Debian 10.2.1-6) 10.2.1 20210110, 64-bit

This example used the Neon serverless driver's SQL-over-HTTP functionality. Neon's serverless driver also exposes Client and Pool constructors to enable sessions, interactive transactions, and node-postgres compatibility.

Refer to Neon's documentation for a complete overview of the serverless driver.