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Simple API server

This tutorial will cover how to deploy a simple API on Deno Deploy.

Step 1: Write the API in a local file​

// simple_api.js

import { serve } from "https://deno.land/std@0.202.0/http/server.ts";

serve((req: Request) => new Response("Hello World"));

This is a basic web server, and you can run it locally with:

deno run -A simple_api.js

This brings the server up on localhost:5000.

To deploy this server on Deno Deploy, you can use the Github integration.

git init
git add .

Step 2: Create a new Github repo and push the local file to the Github repo​

  1. Create a new Github repo and record the git repo remote URL

  2. From the local repo where simple_api.js resides, initialize git and push to the new remote repo:

    git init
    git add simple_api.js
    git commit -m "First commit"
    git remote add <remote-url>
    git push origin main

You now have a new Github repo with exactly one file in it.

Step 3: Deploy to Deno Deploy​

  1. Navigate to https://dash.deno.com/ and click the New Project button.
  2. On the next page, choose the Deploy from Github repository card.
  3. To fill in the values on the form, choose:
    • the new Github repo that you just created
      • automatic (fastest)
    • main branch
    • simple_api.js as the entrypoint file

This downloads all dependencies of simple_api.js, caches them, and gives you an API at localhost:8000 that responds with "Hello World".