Realtime Postgres

In plain words

Realtime Postgres is an open-source tool launched in 2020 that enables real-time database capabilities for PostgreSQL. It allows developers to build applications that respond instantly to database changes without manual polling. The tool is designed for engineers working with PostgreSQL who need live data synchronization. Available on GitHub, it bridges the gap between traditional databases and real-time application requirements.

written from the facts on this page · September 2026

• MD
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  Hey HN, I’m an engineer at Supabase [0] and one of the creators of this demo. My team and I have been working hard to bring developers the next version of Supabase Realtime. The current version of Realtime [1] is a Change Data Capture (CDC) server for a PostgreSQL database that broadcasts changes via WebSockets to authorized subscribers. It’s written in Elixir/Phoenix. The server utilizes PostgreSQL’s logical replication functionality, which writes database changes to Write-Ahead Logging (WAL) segment files, and a replication slot, responsible for managing and retaining WAL files.…

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• DA
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  Safe Data Changes in PostgreSQL2023 · github.com · ▲47

  Hi HN, we're excited to share our open source tool with the community! We previously posted here with the tagline “real-time events for Postgres” [0]. But after feedback from early users and the community, we’ve shifted our focus to working on tooling for manual database changes. We've consistently heard teams describe challenges with the way manual data updates are handled. Seemingly every engineer we spoke with had examples of errant queries that ended up causing significant harm in production environments (data loss/service interruptions). We’ve seen a few different approaches to how…

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