From 94421af2dd5aedd019601b03640b102a6729c524 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=CA=9C=C9=AA=C9=B4=E1=B4=87=C9=AA=20N=E1=B4=8F=E1=B4=9C?=
 =?UTF-8?q?=E1=B4=A2=E1=B4=87=C9=B4?=
 <157171073+Shineii86@users.noreply.github.com>
Date: Thu, 25 Jun 2026 10:03:22 +0530
Subject: [PATCH] Add no-cache headers to /random to prevent CDN caching

---
 src/routes/apiRoutes.js | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/routes/apiRoutes.js b/src/routes/apiRoutes.js
index 325a3a3..9667f63 100644
--- a/src/routes/apiRoutes.js
+++ b/src/routes/apiRoutes.js
@@ -320,11 +320,10 @@ const createApiRoutes = (jsonResponse, jsonError, startTime) => {
   // ---- FEATURE: Random anime of the day ----
   router.get("/random", async (req, res) => {
     try {
-      // NOTE: Use multiple entropy sources for randomness in serverless
-      const now = Date.now();
-      const hrtime = process.hrtime();
-      const entropy = (now * 31 + hrtime[0] * 17 + hrtime[1] * 13) ^ (process.pid * 7);
-      const randomPage = (Math.abs(entropy) % 499) + 1;
+      // NOTE: Disable CDN cache + use request timestamp for true randomness
+      res.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
+      res.setHeader("Pragma", "no-cache");
+      const randomPage = (Date.now() % 499) + 1;
       const data = await anilist.getCollection("POPULARITY_DESC", null, randomPage, 1);
       const anime = data.results[0];