​
Database Setup

Create a Redis database using Upstash Console or Upstash CLI.

​
Project Setup

We will use C3 (create-cloudflare-cli) command-line tool to create our application. You can open a new terminal window and run C3 using the prompt below. 
npm create cloudflare@latest -- upstash-redis-worker
This will create a new Cloudflare Workers project: 
➜  npm create cloudflare@latest -- upstash-redis-worker

> npx
> create-cloudflare upstash-redis-worker


─────────────────────────────────────────────────────────────────────────────────────────────────
👋 Welcome to create-cloudflare v2.50.8!
🧡 Let's get started.
📊 Cloudflare collects telemetry about your usage of Create-Cloudflare.

Learn more at: https://github.com/cloudflare/workers-sdk/blob/main/packages/create-cloudflare/telemetry.md
─────────────────────────────────────────────────────────────────────────────────────────────────

╭ Create an application with Cloudflare Step 1 of 3
│
├ In which directory do you want to create your application?
│ dir ./upstash-redis-worker
│
├ What would you like to start with?
│ category Hello World example
│
├ Which template would you like to use?
│ type Worker only
│
├ Which language do you want to use?
│ lang TypeScript
│
├ Copying template files
│ files copied to project directory
│
├ Updating name in `package.json`
│ updated `package.json`
│
├ Installing dependencies
│ installed via `npm install`
│
╰ Application created 

...

────────────────────────────────────────────────────────────
🎉  SUCCESS  Application created successfully!
We will also install the Upstash Redis SDK to connect to Redis. 
npm install @upstash/redis

​
The Code

Here is a Worker template to configure and test Upstash Redis connection. 
import { Redis } from "@upstash/redis/cloudflare";

export interface Env {
  UPSTASH_REDIS_REST_URL: string;
  UPSTASH_REDIS_REST_TOKEN: string;
}

export default {
  async fetch(
    request: Request,
    env: Env,
    ctx: ExecutionContext
  ): Promise<Response> {
    const redis = Redis.fromEnv(env);
    const count = await redis.incr("counter");
    return new Response(JSON.stringify({ count }));
  },
};

​
Configure Credentials

Navigate to Upstash Console and copy/paste your UPSTASH_REDIS_REST_URL and UPSTASH_REDIS_REST_TOKEN to your wrangler.toml as below. 
[vars]
UPSTASH_REDIS_REST_URL="REPLACE_HERE"
UPSTASH_REDIS_REST_TOKEN="REPLACE_HERE"

​
Test and Deploy

You can test the function locally with npx wrangler dev Deploy your function to Cloudflare with npx wrangler deploy The endpoint of the function will be provided to you, once the deployment is done.

​
Repositories

Javascript: https://github.com/upstash/upstash-redis/tree/main/examples/cloudflare-workers Typescript: https://github.com/upstash/upstash-redis/tree/main/examples/cloudflare-workers-with-typescript