# Realtime: Broadcast from Database

DevFeed: [Realtime: Broadcast from Database](<https://devfeed.tech/articles/realtime-broadcast-from-database-536.md>)

Original publisher: [Read original article](<https://supabase.com/blog/realtime-broadcast-from-database>)

Author: Filipe Cabaço

Published: 2025-04-02T07:00:00Z

Content type: tutorial

Language: en

Sources: [Supabase Blog](<https://devfeed.tech/sources/supabase-blog.md>)

Topics: [Supabase](<https://devfeed.tech/topics/supabase.md>), [real-time](<https://devfeed.tech/topics/real-time.md>), [Replication](<https://devfeed.tech/topics/replication.md>), [Latency](<https://devfeed.tech/topics/latency.md>), [Security](<https://devfeed.tech/topics/security.md>), [SQL](<https://devfeed.tech/topics/sql.md>), [Database](<https://devfeed.tech/topics/database.md>)

Tags: [database](<https://devfeed.tech/tags/database.md>), [latency](<https://devfeed.tech/tags/latency.md>), [low-latency](<https://devfeed.tech/tags/low-latency.md>), [real-time](<https://devfeed.tech/tags/real-time.md>), [replication](<https://devfeed.tech/tags/replication.md>), [rest](<https://devfeed.tech/tags/rest.md>), [security](<https://devfeed.tech/tags/security.md>), [sql](<https://devfeed.tech/tags/sql.md>)

## AI overview

Supabase Realtime Broadcast from Database lets applications send database-triggered changes to selected client channels. Compared with Postgres Changes, it supports targeted actions, selective payload columns, SQL-based routing, lower latency, and better scalability for applications with many connected users. The article explains setup with Row-Level Security policies, functions, triggers, and client listeners, and describes how replication slots and write-ahead-log changes drive broadcasts.

## Source excerpt

Use Realtime Broadcast to scale sending database changes to clients