FBSimCity: an explorable city that shows how Firebird works

I've published FBSimCity, an interactive visualization of Firebird internals: an explorable isometric city where every building is a subsystem from the classic Conceptual Architecture for Firebird paper (Chan & Yashkir), and queries commute through the pipeline as glowing particles &mdash; REMOTE harbor &rarr; Y-valve &rarr; DSQL &rarr; JRD, with the lock manager tower watching over it. The