From 5263c65571964c721a9a104898357b01a51418e4 Mon Sep 17 00:00:00 2001
From: Satya Patel <satyapatel111@gmail.com>
Date: Thu, 26 Feb 2026 15:55:36 -0800
Subject: [PATCH] fix(api): prevent Vercel CDN from caching Electric responses

Vercel's edge cache can serve stale shape data for Electric requests
because it doesn't properly handle offset-based cache keying. Disable
Vercel CDN caching on the Electric proxy route per Electric's docs.
---
 apps/api/vercel.json | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 apps/api/vercel.json

diff --git a/apps/api/vercel.json b/apps/api/vercel.json
new file mode 100644
index 00000000000..5870d3a8598
--- /dev/null
+++ b/apps/api/vercel.json
@@ -0,0 +1,11 @@
+{
+	"headers": [
+		{
+			"source": "/api/electric/(.*)",
+			"headers": [
+				{ "key": "CDN-Cache-Control", "value": "no-store" },
+				{ "key": "Vercel-CDN-Cache-Control", "value": "no-store" }
+			]
+		}
+	]
+}