Is "Real time spatial database" just a fancy word for another distributed, in-memory datastore? There are many implementations of distributed data structures, a

Is "Real time spatial database" just a fancy word for another distributed, in-memory datastore? There are many implementations of distributed data structures, and many are used for in-memory analytics. I realize spacebase also minimizes remote lookups/puts in the average case. I just want to understand the "spatial" aspect they try to integrate into their product.