perf: replace ISR with CDN cache for versioned code and docs routes (#2297)

Author: JohnPhamous

nuxt.config.ts

@@ -167,8 +167,12 @@ export default defineNuxtConfig({
     '/package/:org/:name/_payload.json': getISRConfig(60, { fallback: 'json' }),
     '/package/:org/:name/v/:version/_payload.json': getISRConfig(60, { fallback: 'json' }),
     // infinite cache (versioned - doesn't change)
-    '/package-code/**': { isr: true, cache: { maxAge: 365 * 24 * 60 * 60 } },
-    '/package-docs/**': { isr: true, cache: { maxAge: 365 * 24 * 60 * 60 } },
+    '/package-code/**': {
+      headers: { 'Cache-Control': 'public, s-maxage=31536000, stale-while-revalidate=31536000' },
+    },
+    '/package-docs/**': {
+      headers: { 'Cache-Control': 'public, s-maxage=31536000, stale-while-revalidate=31536000' },
+    },
     // static pages
     '/': { prerender: true },
     '/200.html': { prerender: true },