Real Time Subscriptions With Postgresql Listen Notify

via “real-time subscriptions with postgresql listen/notify”

Open-source Firebase alternative — Postgres + pgvector, auth, storage, edge functions, real-time.

Unique: Implements real-time subscriptions using PostgreSQL's native LISTEN/NOTIFY mechanism, eliminating the need for separate real-time infrastructure (Redis, Kafka) and enabling subscriptions to coexist with relational queries in a single database, with integrated client libraries for multiple platforms

vs others: Simpler than Firebase Realtime Database because subscriptions are tied to relational data and SQL queries, and more portable than AWS AppSync because it uses standard PostgreSQL without proprietary real-time extensions, though with lower scalability for extremely high-frequency updates or massive subscriber counts