Can I code Supabase?

COPYYou don't need to build this — self-host Postgres directly for your own project's database needs, which is the actual open-source technology underneath: 1. Run Postgres via Docker (a single `docker-compose.yml` with a postgres image is genuinely enough to start) or use a managed Postgres host with a generous free tier if you'd rather not run the container yourself. 2. For auth, an established library (Lucia or Auth.js) gives you email/password and social login against your own database without building session management from scratch. 3. For a basic 'live update' feature (a chat, a live counter), simple WebSockets or even polling covers real personal-project needs without needing Supabase's realtime engine specifically. That's a complete, real backend for a small project, and it's free. Out of scope: connection pooling and automatic backups at scale (genuinely worth paying someone else to handle once you don't want to be on call for your own database), and their realtime subscription engine's specific implementation — approximate the small-scale version above rather than trying to replicate the general-purpose infrastructure.