Not sure. All messaging solution brokers walked away from relational database based storage long time ago (I've seen how badly JBoss 4 messaging with persistence sucked) and for a good reason as either database was occasionally killed by messaging traffic, or messaging traffic was crawling because database was too slow.
In these days with Docker, ready cloud solutions getting the message broker is so simple that there is no reason to use database as a broker. If we know that our traffic will be so small, just install DB and message broker on the same VM, to avoid spending more on hardware or hosting.
In these days with Docker, ready cloud solutions getting the message broker is so simple that there is no reason to use database as a broker. If we know that our traffic will be so small, just install DB and message broker on the same VM, to avoid spending more on hardware or hosting.