Too Long; Didn't Read
From compilers to web apps, <a href="https://hackernoon.com/tagged/databases" target="_blank">databases</a> to caches, <a href="https://hackernoon.com/tagged/maintaining" target="_blank">maintaining</a> computed state is the most prevalent and thorny problem I’ve faced as a developer. Most of this article is about that problem, but skip below to “<a href="#d3dc">A Tiny Contribution</a>” if you just want to see some code.