Update

app/Http/Middleware/InertiaResponseCacheProfile.php

@@ -0,0 +1,86 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Http\Request;
+use Spatie\ResponseCache\CacheProfiles\CacheProfile;
+use Symfony\Component\HttpFoundation\Response;
+
+class InertiaResponseCacheProfile implements CacheProfile
+{
+    public function shouldCacheRequest(Request $request): bool
+    {
+        // Only cache GET requests
+        if (! $request->isMethod('GET')) {
+            return false;
+        }
+
+        // Don't cache requests with query parameters (except for tracking parameters)
+        $allowedQueryParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'ref'];
+        $queryParams = array_keys($request->query());
+        $disallowedParams = array_diff($queryParams, $allowedQueryParams);
+
+        if (! empty($disallowedParams)) {
+            return false;
+        }
+
+        // Don't cache authenticated requests
+        if ($request->user()) {
+            return false;
+        }
+
+        // Don't cache admin routes
+        if ($request->is('admin*') || $request->is('horizon*')) {
+            return false;
+        }
+
+        // Cache both regular page loads and Inertia AJAX requests
+        return true;
+    }
+
+    public function shouldCacheResponse(Response $response): bool
+    {
+        // Only cache successful responses
+        if (! $response->isSuccessful()) {
+            return false;
+        }
+
+        // Cache both HTML responses (initial page loads) and JSON responses (Inertia navigation)
+        $contentType = $response->headers->get('content-type', '');
+
+        return str_contains($contentType, 'text/html') ||
+               str_contains($contentType, 'application/json');
+    }
+
+    public function cacheNameSuffix(Request $request): string
+    {
+        // Different cache keys for HTML vs JSON responses
+        if ($request->header('X-Inertia')) {
+            return '_inertia_json';
+        }
+
+        return '_html';
+    }
+
+    public function isRunningInConsole(): bool
+    {
+        return app()->runningInConsole();
+    }
+
+    public function enabled(Request $request): bool
+    {
+        return config('responsecache.enabled', true);
+    }
+
+    public function cacheRequestUntil(Request $request): \DateTime
+    {
+        $cacheTime = config('responsecache.cache_lifetime_in_seconds', 60 * 60 * 24 * 7);
+
+        return now()->addSeconds($cacheTime)->toDateTime();
+    }
+
+    public function useCacheNameSuffix(Request $request): string
+    {
+        return $this->cacheNameSuffix($request);
+    }
+}