Realtime Architecture

Supabase Realtime Architecture

Write → Detect → Broadcast → All Connected Clients

Client A

Writes data

INSERT/UPDATE

Supabase

PostgreSQL

WAL change

Realtime

Listener

Broadcast

WebSocket

Channel

💻

Client A

Echo filtered

💻

Client B

Cache invalidated

📱

Client C

Cache invalidated

💻

Client D

Cache invalidated

Write operation

Change detection

WebSocket broadcast