The author should remove - or at the very least _credit_, come on - the image used in "The Pendulum of Database Realm" section. It's from Martin Kleppmann's "D

The author should remove - or at the very least _credit_, come on - the image used in "The Pendulum of Database Realm" section. It's from Martin Kleppmann's "Designing Data-Intensive Applications", a particularly good O'Reilly book with illustrations by Rebecca Demarest.