From 2534ffb1b9177ee4592b8835127a4716fe710065 Mon Sep 17 00:00:00 2001
From: Jeppe Bundgaard <jb@truckwash.dk>
Date: Tue, 24 Feb 2026 13:55:34 +0100
Subject: [PATCH] Add Redis caching to autoloader for improved class and module
 loading performance

- Integrated Redis caching in the autoloading process to store and retrieve class and file paths dynamically.
- Added fallback mechanisms for Redis errors to ensure compatibility.
- Cached module directories and individual class paths with expiration to enhance performance and reduce filesystem scans.
---
 services/nginx/app/index.php | 62 ++++++++++++++++++++++++++++++++----
 1 file changed, 55 insertions(+), 7 deletions(-)

diff --git a/services/nginx/app/index.php b/services/nginx/app/index.php
index 030b5867..40b8421e 100644
--- a/services/nginx/app/index.php
+++ b/services/nginx/app/index.php
@@ -22,6 +22,18 @@ header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");
 
 /** Autoload */
 require_once __DIR__ . '/vendor/autoload.php';
+
+// Initialize Redis for autoload caching
+require_once WD . '/interfaces/redis_i.php';
+require_once WD . '/traits/redis_t.php';
+require_once WD . '/classes/redis.php';
+try {
+    $redis_instance = (new classes\redis())->connect();
+    define("redis", $redis_instance);
+} catch (Exception $e) {
+    // Redis might not be available, autoloader will fall back to manual search
+}
+
 /**
  * Lightweight project autoloader: load classes/interfaces/traits/modules on demand.
  * Maps top-level namespaces to folders under the app root (WD).
@@ -35,6 +47,20 @@ require_once __DIR__ . '/vendor/autoload.php';
  */
 spl_autoload_register(function (string $class): void {
     $class = ltrim($class, '\\');
+
+    // Check Redis cache first
+    if (defined('redis')) {
+        try {
+            $cached = redis->get('autoload:' . $class);
+            if ($cached && is_file($cached)) {
+                require_once $cached;
+                return;
+            }
+        } catch (\Throwable $e) {
+            // Fall back to manual search on Redis error
+        }
+    }
+
     $parts = explode('\\', $class);
     $top = strtolower($parts[0] ?? '');
     $relative = implode(DIRECTORY_SEPARATOR, array_slice($parts, 1));
@@ -59,9 +85,22 @@ spl_autoload_register(function (string $class): void {
         // Try inside each module subfolder (e.g. customers\economicCustomers -> modules/economic/customers/economicCustomers.php)
         static $module_dirs = null;
         if ($module_dirs === null) {
-            $module_dirs = array_filter(scandir($base . 'modules'), function($item) use ($base) {
-                return $item !== '.' && $item !== '..' && is_dir($base . 'modules' . DIRECTORY_SEPARATOR . $item);
-            });
+            if (defined('redis')) {
+                try {
+                    $module_dirs = redis->get_array('autoload:module_dirs');
+                } catch (\Throwable $e) {}
+            }
+            if ($module_dirs === null) {
+                $module_dirs = array_filter(scandir($base . 'modules'), function($item) use ($base) {
+                    return $item !== '.' && $item !== '..' && is_dir($base . 'modules' . DIRECTORY_SEPARATOR . $item);
+                });
+                if (defined('redis')) {
+                    try {
+                        redis->set_array('autoload:module_dirs', $module_dirs);
+                        redis->expire('autoload:module_dirs', 3600); // Cache for 1 hour
+                    } catch (\Throwable $e) {}
+                }
+            }
         }
         foreach ($module_dirs as $mod) {
             $candidates[] = $base . 'modules' . DIRECTORY_SEPARATOR . $mod . DIRECTORY_SEPARATOR . str_replace('\\', DIRECTORY_SEPARATOR, $class);
@@ -76,6 +115,11 @@ spl_autoload_register(function (string $class): void {
             if (is_file($file)) {
                 require_once $file;
                 if (class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false) || (function_exists('enum_exists') && enum_exists($class, false))) {
+                    if (defined('redis')) {
+                        try {
+                            redis->setEx('autoload:' . $class, $file, 86400); // Cache for 24 hours
+                        } catch (\Throwable $e) {}
+                    }
                     return;
                 }
             }
@@ -94,10 +138,14 @@ $router = new router();
 $response = new response();
 $request = new request();
 $db = new db($CONFIG_DB);
-try {
-    define("redis", (new redis())->connect());
-} catch (Exception $e) {
-    $response->error($e->getMessage(), 500);
+
+// Ensure Redis is connected
+if (!defined('redis')) {
+    try {
+        define("redis", (new redis())->connect());
+    } catch (Exception $e) {
+        $response->error($e->getMessage(), 500);
+    }
 }
 
 // Connect to the database, and ensure the connection is successful