Postgres LISTEN/NOTIFY Actually Scales for High-Performance Applications

Postgres LISTEN/NOTIFY Actually Scales for High-Performance Applications

I challenge the common belief that Postgres LISTEN/NOTIFY cannot handle high concurrency. Through rigorous testing, I demonstrate that this native feature scales effectively for real-time applications without needing external message brokers. The results show that with proper configuration, you can achieve significant throughput and low latency directly within your database, simplifying your architecture.

You do not need a complex external message broker to build scalable real-time systems; Postgres LISTEN/NOTIFY is often enough.

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2026-07-24