PostgreSQL vs. Supabase: Which Should You Self-Host?

Both PostgreSQL and Supabase are available as one-click services in better-openclaw, but they serve different needs. PostgreSQL is the raw, battle-tested relational database that powers millions of applications. Supabase wraps PostgreSQL with auth, real-time subscriptions, storage, and auto-generated REST APIs — essentially a self-hosted Firebase alternative.

PostgreSQL: Maximum Control

Raw PostgreSQL gives you full control over extensions, configuration tuning, and replication setup. It uses fewer resources (as low as 128 MB RAM) and is the dependency of choice for services like n8n, Outline, and Gitea. If you're building custom applications or need specific extensions like pgvector for AI embeddings, raw PostgreSQL is the way to go.

Supabase: Batteries Included

Supabase adds a REST API (PostgREST), real-time WebSocket subscriptions, a built-in auth system (GoTrue), file storage, and edge functions. For rapid prototyping or small teams that want to avoid building a backend from scratch, Supabase offers enormous value. The trade-off is higher resource usage (2+ GB RAM) and more moving parts to manage.

Verdict

Use PostgreSQL if other services in your stack already depend on it — you avoid running two database instances. Use Supabase if you're building a new application and want auth, real-time, and APIs out of the box. With better-openclaw, switching between them takes seconds: just regenerate your stack with the desired service.