Serverless Postgres setup for edge functions with connection pooling, branching, and ORM integration.

• Supports Neon Direct (multi-cloud, Cloudflare Workers) and Vercel Postgres (zero-config on Vercel); both use HTTP/WebSocket protocols instead of TCP for edge compatibility
• Requires pooled connection strings (-pooler. in hostname) for serverless; non-pooled connections exhaust quickly in high-concurrency environments
• Template tag syntax (sql`...`) prevents SQL injection; string concatenation is unsafe and will fail in v1.0+
• Drizzle ORM works in all runtimes including Cloudflare Workers; Prisma requires Node.js and won't run in edge functions
• Neon-specific features include git-like database branching for preview deployments, point-in-time restore, and automatic transaction handling via array or callback syntax