> And yet some of the most popular OLTP databases in the world today are still highly dependent on a single node architecture.
Which databases? SQLite is the one I can think of, but it's designed for that use-case. Others start as single node but will replicate to other nodes, either as master-slave or master-master.
Which databases? SQLite is the one I can think of, but it's designed for that use-case. Others start as single node but will replicate to other nodes, either as master-slave or master-master.