From 4e8c7e93954a67d874df87d2a4921f45b55efe50 Mon Sep 17 00:00:00 2001
From: Shift <shift@laravelshift.com>
Date: Thu, 15 Jan 2026 13:17:57 +0000
Subject: [PATCH] Custom `cache-control` middleware

---
 app/Http/Middleware/ForceCache.php            | 53 +++++++++++++++++++
 app/Http/Middleware/SetCacheControlHeader.php | 40 ++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 app/Http/Middleware/ForceCache.php
 create mode 100644 app/Http/Middleware/SetCacheControlHeader.php

diff --git a/app/Http/Middleware/ForceCache.php b/app/Http/Middleware/ForceCache.php
new file mode 100644
index 000000000..cd1d3ee8a
--- /dev/null
+++ b/app/Http/Middleware/ForceCache.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class ForceCache
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        $response = $next($request);
+
+        if ($this->shouldCacheResponse($request, $response)) {
+            $response->headers->add([
+                'Cache-Control' => 'max-age=86400, public',
+                'ETag' => $this->generateEtag($request),
+            ]);
+            $response->headers->remove('Set-Cookie');
+        }
+
+        return $response;
+    }
+
+    public function shouldCacheResponse(Request $request, Response $response): bool
+    {
+        if (! $request->isMethod('GET')) {
+            return false;
+        }
+
+        if (! $response->isSuccessful()) {
+            return false;
+        }
+
+        if ($request->user()) {
+            return false;
+        }
+
+        return true;
+    }
+
+    private function generateEtag(Request $request): string
+    {
+        $uri = $request->path();
+
+        if ($request->getQueryString()) {
+            $uri .= '?' . $request->getQueryString();
+        }
+
+        return md5($uri . ':' . time());
+    }
+}
diff --git a/app/Http/Middleware/SetCacheControlHeader.php b/app/Http/Middleware/SetCacheControlHeader.php
new file mode 100644
index 000000000..a3a1c687c
--- /dev/null
+++ b/app/Http/Middleware/SetCacheControlHeader.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class SetCacheControlHeader
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        $response = $next($request);
+
+        if ($this->shouldCacheResponse($request, $response)) {
+            $response->headers->add([
+                'Cache-Control' => 'max-age=86400, public',
+            ]);
+        }
+
+        return $response;
+    }
+
+    public function shouldCacheResponse(Request $request, Response $response): bool
+    {
+        if (! $request->isMethod('GET')) {
+            return false;
+        }
+
+        if (! $response->isSuccessful()) {
+            return false;
+        }
+
+        if (app()->isLocal()) {
+            return false;
+        }
+
+        return true;
+    }
+}