Deploy a Bun application on Render

Render is a cloud platform for building, deploying, and scaling apps. It provides auto deploys from GitHub, a global CDN, private networks, automatic HTTPS setup, and managed PostgreSQL and Redis. Render supports Bun natively. You can deploy Bun apps as web services, background workers, cron jobs, and more.

As an example, this guide deploys an Express HTTP server to Render.

Step 1

Create a new GitHub repo named myapp. Git clone it locally.

git clone git@github.com:my-github-username/myapp.git
cd myapp

Step 2

Add the Express library.

bun add express

Step 3

Define a server with Express:

app.ts

import express from "express";

const app = express();
const port = process.env.PORT || 3001;

app.get("/", (req, res) => {
	res.send("Hello World!");
});

app.listen(port, () => {
	console.log(`Listening on port ${port}...`);
});

Step 4

Commit your changes and push to GitHub.

terminal

git add app.ts bun.lock package.json
git commit -m "Create simple Express app"
git push origin main

Step 5

In your Render Dashboard, click New > Web Service and connect your myapp repo.

Step 6

In the Render UI, provide the following values during web service creation:


Runtime	`Node`
Build Command	`bun install`
Start Command	`bun app.ts`

Once the build finishes, your web service is live at its assigned onrender.com URL. View the deploy logs for details. See Render’s documentation for more on deploys.

Deploy a Bun application on Railway

Deploy a Bun application on AWS Lambda

Overview

Deployment

Runtime & Debugging

Utilities

Ecosystem & Frameworks

HTTP & Networking

WebSocket

Processes & System

Package Manager

Test Runner

Runtime & Debugging

Module System

File System

Utilities

HTML Processing

Binary Data

Streams

Deploy a Bun application on Render