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Project Setup

Let’s create a new Next.js application with App Router and install @upstash/redis package.

npx create-next-app@latest
cd my-app
npm install @upstash/redis

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Database Setup

Create a Redis database using Upstash Console or Upstash CLI and copy the UPSTASH_REDIS_REST_URL and UPSTASH_REDIS_REST_TOKEN into your .env file.

.env
UPSTASH_REDIS_REST_URL=<YOUR_URL>
UPSTASH_REDIS_REST_TOKEN=<YOUR_TOKEN>

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Function Setup

This is a Vercel Serverless Function. If you want to use Edge Runtime, you can add the export const runtime = 'edge' line to this Route Handler.

Create /app/api/hello/route.ts:

/app/api/hello/route.ts
import { Redis } from "@upstash/redis";
import { NextResponse } from "next/server";

const redis = Redis.fromEnv();

export async function GET() {
    const count = await redis.incr("counter");
    return NextResponse.json({ count });
}

export const dynamic = 'force-dynamic'

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Run & Deploy

Run the app locally with npm run dev, check http://localhost:3000/api/hello

Deploy your app with vercel

You can also integrate your Vercel projects with Upstash using Vercel Integration module. Check this article.

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