From a430eae12bda27abbd7982becf01adfbb003b04d Mon Sep 17 00:00:00 2001
From: Mike Cao <mike@mikecao.com>
Date: Wed, 25 Jan 2023 08:47:13 -0800
Subject: [PATCH] Merged #1752.

---
 lib/middleware.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/middleware.js b/lib/middleware.js
index 8189ea66..b76a9d40 100644
--- a/lib/middleware.js
+++ b/lib/middleware.js
@@ -3,7 +3,12 @@ import cors from 'cors';
 import { getSession } from './session';
 import { getAuthToken, getShareToken } from './auth';
 
-export const useCors = createMiddleware(cors());
+export const useCors = createMiddleware(
+  cors({
+    // Cache CORS preflight request 24 hours by default
+    maxAge: process.env.CORS_MAX_AGE || 86400,
+  }),
+);
 
 export const useSession = createMiddleware(async (req, res, next) => {
   let session;