How to Fix Nuxt Static File Caching for Lighthouse Performance Warnings

A developer discovered that Lighthouse cache warnings in a Nuxt app persisted because Nuxt Image's dynamically generated /_ipx URLs were missing a dedicated Cache-Control rule. The core caching principle is straightforward: files whose URLs change when content changes can be cached aggressively, while files with stable URLs require shorter lifetimes to avoid serving stale content. Nuxt build files under /_nuxt/ include content hashes in their filenames, making them safe for long-term caching with the immutable directive. Files in the public/ directory do not auto-version, so they should either use moderate cache durations or be manually renamed on update. Adding a separate cache rule for /_ipx/ URLs, which Nuxt Image generates for transformed images, resolved the remaining Lighthouse warning.