We use pgmq with the pgmq-go client, and it has clients in many different languages, it's amazing.
The queues persist on disk and visualizations of queues can easily be made with grafana or just pure sql requests.
The fact that the queues lives in the same database as all the other data is also a huge benefit if the 5-15ms time penalty is not an issue.
Then in the latency tradeof section it says end to end latency is between 1-2 seconds.
Is this under heavy load or always? How does this compare to pgmq end to end latency?