I have a node.js server application that stores it's data (small, as in "few kb") in NeDB. I need to have more than one instance with synchronized data. As NeDB was not designed to handle replication I need an alternative persistent data storage. Main requirement is consistency between instances.
MongoDB seems to be obvious choice as NeDB implements subset of MongoDB API, but spinning up a Mongo cluster just to handle few kilobytes of data seems to be excessive.
What are replicating, strongly consistent persistent data storage alternatives (for few kilobytes of data), preferably with NeDB-compatible API?