Another option (which turns the database even more inside out) is to use CRDTs (conflict-free replicated data types). They allow you to get the end state that y

Another option (which turns the database even more inside out) is to use CRDTs (conflict-free replicated data types). They allow you to get the end state that you want, while still running your database across many different concurrent machines. Give them a google, they are also called Convergent Replicated Data Types, you'll find them very enlightening. We have them as the base conflict-resolution algorithm for our database, http://gun.js.org/ http://gun.js.org/ and they work great.