From ba7e94690ae5b1c3788ec17a6b658f657f34c94b Mon Sep 17 00:00:00 2001
From: Samet <hey@samet.codes>
Date: Fri, 22 Mar 2024 00:26:49 +0300
Subject: [PATCH] feat: added stale-white-revalidate directive

---
 middlewares/api/cache.ts | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/middlewares/api/cache.ts b/middlewares/api/cache.ts
index 6e47f0a..f2b3ce4 100644
--- a/middlewares/api/cache.ts
+++ b/middlewares/api/cache.ts
@@ -9,10 +9,16 @@ export const setCacheControl = (
     query: { cache_time, _vercel_no_cache },
   } = res.locals;
 
-  res.setHeader("Cache-Control", "max-age=60");
+  res.setHeader("Cache-Control", "max-age=60, stale-while-revalidate=2592000");
   if (_vercel_no_cache === undefined) {
-    res.setHeader("CDN-Cache-Control", `max-age=${cache_time}`);
-    res.setHeader("Vercel-CDN-Cache-Control", `max-age=${cache_time}`);
+    res.setHeader(
+      "CDN-Cache-Control",
+      `max-age=${cache_time}, stale-while-revalidate=2592000`
+    );
+    res.setHeader(
+      "Vercel-CDN-Cache-Control",
+      `max-age=${cache_time}, stale-while-revalidate=2592000`
+    );
   }
 
   next();