Why don't you want to implement a basic service worker? A couple of cache strategies among these ones seem like a net positive? https://developers.google.com/we

Why don't you want to implement a basic service worker? A couple of cache strategies among these ones seem like a net positive? https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/ https://developers.google.com/web/fundamentals/instant-and-o... (ex: "Cache, falling back to network" for CDN'd libraries, "Cache then network" for content like news articles)