I'd be happy to help you explore database options for your app. When working with serverless functions on Vercel, there are several approaches to consider for database connectivity.

Database Options for Vercel Apps

When building applications on Vercel, you have several database options to choose from. The best choice depends on your specific requirements, budget, and familiarity with different database technologies.

Vercel Native Integrations

Vercel offers native integrations with several database providers through the Vercel Marketplace 1. These are the easiest to set up and come with automatic environment variable configuration:

1. Postgres Providers:

   • Neon
   • Supabase
   • Vercel Postgres (powered by Neon)

2. NoSQL/Document Databases:

   • MongoDB Atlas
   • Upstash Redis
   • PlanetScale (MySQL)

Connection Considerations for Serverless

When using databases with serverless functions, it's important to understand connection management. Traditional connection pooling doesn't work well in serverless environments because functions are ephemeral 2.

Here are some approaches to consider:

1. HTTP Database APIs: Services like Supabase, Hasura, or AWS Aurora Data API expose a managed API layer that allows you to execute SQL statements over HTTP without managing connections 2.
2. Fluid Compute: Vercel's Fluid Compute enables multiple invocations to share a single function instance, allowing you to maintain and reuse database connections 2.
3. Serverless-optimized databases: Some database providers offer connection management specifically designed for serverless environments.

Example Implementation

Here's a basic example of connecting to PostgreSQL using Fluid Compute on Vercel:

Adding a Database Integration

To add a database integration to your Vercel project:

1. From the Vercel dashboard, go to the Integrations tab and select "Browse Marketplace"
2. Under Native Integrations, select your preferred database provider
3. Follow the installation steps to create a new database
4. Connect your project to the database, which will automatically add the necessary environment variables 1

Would you like me to provide more specific information about any particular database option?