I don't work in the webspace so genuinely curious... are things generally still cached between website visits? I thought that was effectively non-existant now a days b/c of fingerprintability. I'm pretty sure at least for JS it's the case. CSS is different?
Resources are cached within the same origin. So HN resources will be cached and used on HN visits. But if two different sites load a library from the same CDN, they will not share their caches with each other and will both load it separately.
