From 970f1d2b5d78a8b83d451c7544c26a3b2517b592 Mon Sep 17 00:00:00 2001
From: Sacha STAFYNIAK <sacha@digisquad.io>
Date: Sat, 5 Mar 2022 16:30:06 +0100
Subject: [PATCH] fix: serve admin static file with public cache

---
 packages/core/admin/server/routes/serve-admin-panel.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/core/admin/server/routes/serve-admin-panel.js b/packages/core/admin/server/routes/serve-admin-panel.js
index c8935a756b..f5ef695d5d 100644
--- a/packages/core/admin/server/routes/serve-admin-panel.js
+++ b/packages/core/admin/server/routes/serve-admin-panel.js
@@ -32,7 +32,7 @@ const registerAdminPanelRoute = ({ strapi }) => {
       path: `${strapi.config.admin.path}/:path*`,
       handler: [
         serveAdminMiddleware,
-        serveStatic(buildDir, { maxage: 60000, defer: false, index: 'index.html' }),
+        serveStatic(buildDir, { maxage: 31536000, defer: false, index: 'index.html' }),
       ],
       config: { auth: false },
     },
@@ -46,6 +46,13 @@ const serveStatic = (filesDir, koaStaticOptions = {}) => {
   return async (ctx, next) => {
     const prev = ctx.path;
     const newPath = path.basename(ctx.path);
+    const ext = path.extname(ctx.path);
+
+    // publicly cache static files to avoid unnecessary network & disk access
+    if (ext === '.css' || ext === '.js') {
+      ctx.set('cache-control', 'public, max-age=31536000, immutable');
+    }
+
     ctx.path = newPath;
     await serve(ctx, async () => {
       ctx.path = prev;