Has this person actually benchmarked kafka? The results they get with their 96 vcpu setup could be achieved with kafka on the 4 vcpu setup. Their results with PG are absurdly slow.
If you don't need what kafka offers, don't use it. But don't pretend you're on to something with your custom 5k msg/s PG setup.
If you don't need what kafka offers, don't use it. But don't pretend you're on to something with your custom 5k msg/s PG setup.