"Turning the database inside out with Apache Samza" by Martin KleppmannDatabases are global, shared, mutable state. That's the way it has been since the 1960s, and no amount of NoSQL has changed that. However, most self-respecting developers have got rid of mutable global variables in their code long ago. So why do we tolerate databases as they are? A more promising model, used in some systems, is to think of a database as an always-growing collection of immutable f
