Supabase Realtime

Database-backed real-time subscriptions that broadcast changes from PostgreSQL tables to connected clients.

Overview

Built on top of PostgreSQL's logical replication, Supabase Realtime allows clients to subscribe to table changes or broadcast custom messages. It eliminates the need for a separate WebSocket server for most CRUD-based collaborative apps. If a row is inserted, updated, or deleted, all subscribed clients receive the event instantly. It integrates tightly with the Supabase auth and storage ecosystem.

Best for

• Collaborative to-do lists
• Live dashboards
• Chat apps backed by DB

Trade-offs

What XeroHack pre-wires

When you pick Supabase Realtime in the interview, the engine emits these files into your scaffold:

• useRealtime hook
• Channel subscription
• PostgREST sync