> ## Documentation Index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Pages Router

<Snippet file="redis/start-redis-snippet.mdx" />

<Card title="GitHub Repository" icon="github" href="https://github.com/upstash/redis-js/tree/main/examples/vercel-functions-pages-router" horizontal>
  You can find the project source code on GitHub.
</Card>

<Info>
  This is a quickstart for Vercel Serverless Functions. If you want to use Edge Runtime, Vercel recommends icrementally adopting the App Router.
</Info>

### Project Setup

Let's create a new Next.js application with Pages Router and install `@upstash/redis` package.

```shell theme={"system"}
npx create-next-app@latest
cd my-app
npm install @upstash/redis
```

### Database Setup

Create a Redis database using [Upstash Console](https://console.upstash.com) or [Upstash CLI](https://github.com/upstash/cli) and copy the `UPSTASH_REDIS_REST_URL` and `UPSTASH_REDIS_REST_TOKEN` into your `.env` file.

```shell .env theme={"system"}
UPSTASH_REDIS_REST_URL=<YOUR_URL>
UPSTASH_REDIS_REST_TOKEN=<YOUR_TOKEN>
```

### Function Setup

Update `/pages/api/hello.ts`:

```ts /pages/api/hello.ts theme={"system"}
import { Redis } from "@upstash/redis";
import type { NextApiRequest, NextApiResponse } from "next";

const redis = Redis.fromEnv();

export default async function handler(
  req: NextApiRequest,
  res: NextApiResponse,
) {
  const count = await redis.incr("counter");
  res.status(200).json({ count });
}
```

### Run & Deploy

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

Deploy your app with `vercel`

<Info>
  You can also integrate your Vercel projects with Upstash using Vercel
  Integration module. Check [this article](../howto/vercelintegration).
</Info>