> the only downside I can see is that you have a very limited way to query things Which is a huge downside. > But so what, at least it's fast So is an RDBMS

> the only downside I can see is that you have a very limited way to query things Which is a huge downside. > But so what, at least it's fast So is an RDBMS for most read/write workloads. Few will see an overall benefit from Cassandra and the labor needed to replicate the conveniences offered by an RDBMS. > it's about storing data It's not about storing data, it's about using data to accomplish business objectives with the promises that entails. You opt for something like Cassandra/Scylla because it solves a technical challenge otherwise untenable or more expensive, but it's a poor choice if your problem is reasonably solved with what Postgres can offer.