How We Engineered a 73% Cache Hit Rate Travel App with Vite + React

GoNepal - Cache-First Travel for Nepal’s Toughest Networks GoNepal started out as a hackathon project, but right from the beginning, we focused on one big problem: Nepal’s network can be flaky , especially in the mountains , and most travel apps just aren’t built for that. So we built GoNepal to keep working even when your signal drops, your battery’s low, or you’re stuck translating between three languages. The Core Idea : Cache Comes First Most apps treat caching like an afterthought . We flipped that. For us, cache isn’t just a speed boost — it’s the backbone. 1️⃣ In-Memory Translation Cache We built a translation engine that actually watches the DOM for changes (thank you, MutationObserver ). Every time you translate something, we stash that result in RAM for the session — no more wasting API calls on the same text. _const translationCache: Record = {}; export function getCachedTranslation(key: string) { if (translationCache[key]) return translationCache[key]; return null; }_ What