Postgres is pulling Kafka moves—without the Kafka. On a humble 3-node cluster, it held 5MB/s ingest and 25MB/s egress like a champ. Low latency. Rock-solid durability.
Crank things up, and single-node Postgres flexed hard: 240 MiB/s in, 1.16 GiB/s out for pub/sub. Thousands of messages per second in queuing workloads. All with plain tables and some DIY coordination.
Why does this matter? Hardware's stepped up. Postgres keeps evolving. So for a lot of messaging and queuing use cases, you might not need a sprawling distributed system anymore.
