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Bun is a fast, all-in-one JavaScript runtime and toolkit. Zerops provides a powerful hosting environment for Bun applications with automatic scaling, built-in CI/CD, and seamless database connectivity.

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Why Choose Bun on Zerops

Zerops makes deploying Bun applications effortless:
  • Blazing Fast - 3x faster than Node.js for many operations
  • All-in-One - Runtime, package manager, bundler, and test runner
  • Automatic Scaling - Horizontal and vertical auto-scaling
  • Built-in CI/CD - Automatic builds from Git
  • Database Integration - Easy connections to PostgreSQL, MySQL, and more

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Supported Bun Versions

Zerops supports:
  • bun@1.0
  • bun@1.1
  • bun@latest

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Quick Start

Deploy a Bun application in minutes:
1

Create a project

Log in to the Zerops GUI and create a new project.
2

Import the recipe

Use our ready-made recipe:
project:
  name: my-bun-app

services:
  - hostname: api
    type: bun@1.1
    enableSubdomainAccess: true
    buildFromGit: https://github.com/zeropsio/recipe-bun

  - hostname: db
    type: postgresql@16
    mode: NON_HA
    priority: 1
3

Access your app

Once deployed, access via the generated subdomain.

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Key Features

Quick Setup

Get started in minutes with our quickstart guide.

Build Pipeline

Configure your build process with zerops.yaml.

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Example Bun Application

Here’s a simple Bun server with PostgreSQL:
server.ts
import { serve } from "bun";
import { Pool } from "pg";

const pool = new Pool({
  host: "db",
  port: 5432,
  user: "db",
  password: process.env.DB_PASSWORD,
  database: "db",
});

const server = serve({
  port: 3000,
  async fetch(req) {
    const result = await pool.query(
      "SELECT COUNT(*) as count FROM requests"
    );
    
    return new Response(
      JSON.stringify({ 
        message: "Hello from Bun on Zerops!",
        count: result.rows[0].count 
      })
    );
  },
});

console.log(`Listening on http://localhost:${server.port}`);
With zerops.yaml: 
zerops:
  - setup: api
    build:
      base: bun@1.1
      buildCommands:
        - bun install
        - bun build ./server.ts --outdir ./dist
      deployFiles:
        - dist
        - node_modules
        - package.json
      cache: node_modules
    
    run:
      base: bun@1.1
      ports:
        - port: 3000
      start: bun run dist/server.js

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Why Bun?

Fast Package Manager

Install packages up to 25x faster than npm.

Native TypeScript

Run .ts files directly without compilation.

Built-in Bundler

Bundle your app with bun build.

Node.js Compatible

Works with most npm packages.

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