# Connect a RedwoodSDK application to Neon

Pre-built prompt for connecting RedwoodSDK applications to Lakebase Postgres

[RedwoodSDK](https://rwsdk.com/) is a framework for building full-stack applications on Cloudflare. This guide describes how to create a Neon project and access it from a RedwoodSDK application.

To create a project on Neon and access it from a RedwoodSDK application:

:::::steps
:::step{title="Create a Neon project"}
If you do not have one already, create a Neon project. Save your connection details including your password. They are required when defining connection settings.

1. Navigate to the [Projects](https://console.neon.tech/app/projects) page in the Neon Console.
2. Click **New Project**.
3. Specify your project settings and click **Create Project**.
:::

::::step{title="Create a RedwoodSDK project and add dependencies"}
1. Create a RedwoodSDK project if you do not have one. For instructions, see [RedwoodSDK Quickstart](https://docs.rwsdk.com/getting-started/quick-start/).

2. Navigate into your new project directory and install the RedwoodSDK dependencies:

   ```bash
   cd my-redwood-app
   npm install
   ```

3. Add project dependencies depending on the PostgreSQL driver you wish to use (`postgres.js` or `@neondatabase/serverless`):

   :::code-group
   ```bash title="Neon serverless driver"
   npm install @neondatabase/serverless
   ```

   ```shell title="postgres.js"
   npm install postgres
   ```
   :::
::::

:::step{title="Store your Neon credentials"}
Add a `.env` file to your project directory and add your Neon connection string to it. You can find your Neon database connection string by clicking the **Connect** button in the Console nav to open the **Connect to your branch** modal. For more information, see [Connect from any application](/guides/postgres-connect-connect-from-any-app).

```bash
DATABASE_URL="postgresql://<user>:<password>@<endpoint_hostname>.neon.tech:<port>/<dbname>?sslmode=require&channel_binding=require"
```
:::

::::step{title="Configure the Postgres client"}
In your RedwoodSDK application (for example, in `src/app/pages/Home.tsx`), import the driver and use it within your route handlers.

Here's how you can set up a simple route to query the database:

:::code-group
```typescript title="Neon serverless driver"
import { RequestInfo } from "rwsdk/worker";
import { neon } from '@neondatabase/serverless';
import { env } from "cloudflare:workers";

async function getData() {
  const sql = neon(env.DATABASE_URL);
  const response = await sql`SELECT version()`;
  return response[0].version;
}

export async function Home({ ctx }: RequestInfo) {
  const data = await getData();
  return <>{data}</>;
}
```

```typescript title="postgres.js"
import { RequestInfo } from "rwsdk/worker";
import postgres from 'postgres';
import { env } from "cloudflare:workers";

async function getData() {
  const sql = postgres(env.DATABASE_URL, { ssl: 'require' });
  const response = await sql`SELECT version()`;
  return response[0].version;
}

export async function Home({ ctx }: RequestInfo) {
  const data = await getData();
  return <>{data}</>;
}
```
:::
::::

:::step{title="Run your RedwoodSDK application"}
Generate the required Wrangler types for RedwoodSDK to detect environment variables:

```bash
npx wrangler types
```

Start the development server:

```bash
npm run dev
```

Navigate to ([localhost:5173](http://localhost:5173/)) in your browser. You should see a response similar to the following, indicating a successful connection to your Neon database:

```
PostgreSQL 17.5 (6bc9ef8) on aarch64-unknown-linux-gnu, compiled by gcc (Debian 12.2.0-14+deb12u1) 12.2.0, 64-bit
```

> The specific version may vary depending on the PostgreSQL version of your Neon project.
:::
:::::

## Resources

- [RedwoodSDK Documentation](https://docs.rwsdk.com/)
- [Connect to a PostgreSQL database with Cloudflare Workers](https://developers.cloudflare.com/workers/tutorials/postgres/)

## Next steps

- [Set up Managed Better Auth](/guides/auth-index): Add managed authentication that branches with your database
- [Add Object Storage](/guides/object-storage-index): S3-compatible file storage that branches with your database
- [Deploy a Function](/guides/neon-functions-index): Run backend compute next to your database, no separate hosting needed
- [Call an LLM with AI Gateway](/guides/ai-gateway-index): Access foundation models from Anthropic, OpenAI, Google, and more with one credential

## Need help?

Join our [Discord Server](https://neon.com/discord) to ask questions or see what others are doing with Neon. For paid plan support options, see [Support](/guides/postgres-introduction-support).

## Related pages

- [Connect Astro to Postgres on Neon](./neon-docs-guides-astro.md)
- [Connect a Bun application to Neon](./neon-docs-guides-bun.md)
- [Connect an Entity Framework application to Neon](./neon-docs-guides-dotnet-entity-framework.md)
- [Connect an Encore application to Neon](./neon-docs-guides-encore.md)
- [Connect an Express application to Neon](./neon-docs-guides-express.md)
- [Self-Host Medusa with Neon](./neon-docs-guides-medusajs.md)
- [Connect a Micronaut Kotlin application to Lakebase Postgres](./neon-docs-guides-micronaut-kotlin.md)
- [Connect a NestJS application to Neon](./neon-docs-guides-nestjs.md)
- [Connect a Next.js application to Neon](./neon-docs-guides-nextjs.md)
- [Connect a Node.js application to Neon](./neon-docs-guides-node.md)

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