Frontend Caching Done Right

In this article we’ll cover how the browser cache and HTTP headers work, when and how to use stale-while-revalidate, how service workers give you programmatic control over caching, what you should never cache, and how cache invalidation works in practice. All of it from the perspective of building for platforms that can’t afford to get this wrong. Caching is one of those topics that every frontend developer thinks they understand, until they’re staring at a production issue where users are getti