---
title: Config
description: "Configure the demo database. Configure the demo database. Configure the demo database. Configure the demo database. Configure the demo database. Configure the demo database. "
section: guide
order: 20
---
# Config

The database block of `config/app.yaml`:

```yaml src=config/app.yaml#db
db:
  host: localhost
  port: 5432
```

## Settings

> [!WARNING]
> Keep the port in step with the database server.