Speed of light is unfortunately one of the main reasons to do region specific databases… you might be able to do it globally with some sort of clever UI to smoo

Speed of light is unfortunately one of the main reasons to do region specific databases… you might be able to do it globally with some sort of clever UI to smooth out the effect of delay and maybe a kind of event stream ordering actions by time… but all depends on the purpose of the writes and how those writes impact other users…