From c85fb353e3c5f249c73f5846e74ef5ab023215f0 Mon Sep 17 00:00:00 2001
From: HB9HIL <fabian.berg@hb9hil.org>
Date: Fri, 20 Feb 2026 16:55:51 +0100
Subject: [PATCH 1/3] set default caching type to apcu to improve UX (fallback
 is always file)

---
 application/config/config.sample.php | 2 +-
 install/config/config.php            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/application/config/config.sample.php b/application/config/config.sample.php
index 15c3cb3c7..05347d6b8 100644
--- a/application/config/config.sample.php
+++ b/application/config/config.sample.php
@@ -433,7 +433,7 @@ $config['error_views_path'] = '';
 |
 */
 $config['cache_path'] = '';
-$config['cache_adapter'] = 'file';
+$config['cache_adapter'] = 'apcu';
 $config['cache_backup'] = 'file';
 $config['cache_key_prefix'] = '';
 
diff --git a/install/config/config.php b/install/config/config.php
index 1e4ad582d..c184abb70 100644
--- a/install/config/config.php
+++ b/install/config/config.php
@@ -433,7 +433,7 @@ $config['error_views_path'] = '';
 |
 */
 $config['cache_path'] = '';
-$config['cache_adapter'] = 'file';
+$config['cache_adapter'] = 'apcu';
 $config['cache_backup'] = 'file';
 $config['cache_key_prefix'] = '';
 

From 90131b2645c2c9c6053066d520d7e8d6215238dd Mon Sep 17 00:00:00 2001
From: HB9HIL <fabian.berg@hb9hil.org>
Date: Fri, 20 Feb 2026 16:56:27 +0100
Subject: [PATCH 2/3] improved cache debugging in debug view to catch more
 cases and give user better feedback about failed services

---
 application/controllers/Debug.php |  6 +--
 application/views/debug/index.php | 65 ++++++++++++++++++++++++++-----
 2 files changed, 59 insertions(+), 12 deletions(-)

diff --git a/application/controllers/Debug.php b/application/controllers/Debug.php
index 175c766a2..7a90bd50a 100644
--- a/application/controllers/Debug.php
+++ b/application/controllers/Debug.php
@@ -109,10 +109,10 @@ class Debug extends CI_Controller
 		$cache_info = $this->Debug_model->get_cache_info();
 		$data['cache_available_adapters'] = $cache_info['adapters'];
 		$data['cache_path'] = $cache_info['config']['cache_path'] ?: 'application/cache';
-		$data['cache_adapter'] = ucfirst($cache_info['config']['cache_adapter'] ?? 'file');
-		$data['cache_backup'] = ucfirst($cache_info['config']['cache_backup'] ?? 'file');
+		$data['cache_adapter'] = strtolower($cache_info['config']['cache_adapter'] ?? 'file');
+		$data['cache_backup'] = strtolower($cache_info['config']['cache_backup']) ?? 'file';
 		$data['cache_key_prefix'] = $cache_info['config']['cache_key_prefix'] ?: __("(empty)");
-		$data['active_adapter'] = ucfirst($cache_info['active']['adapter'] ?? ($cache_info['config']['cache_adapter'] ?? 'file'));
+		$data['active_adapter'] = strtolower($cache_info['active']['adapter'] ?? ($cache_info['config']['cache_adapter'] ?? 'file'));
 		$data['using_backup'] = !empty($cache_info['active']['using_backup']);
 		$data['details_cache_size'] = $cache_info['details']['size'] ?? '0 B';
 		$data['details_cache_keys_count'] = $cache_info['details']['keys_count'] ?? 0;
diff --git a/application/views/debug/index.php b/application/views/debug/index.php
index 724dee4fb..c84e6f1da 100644
--- a/application/views/debug/index.php
+++ b/application/views/debug/index.php
@@ -315,6 +315,45 @@
                                         <?php } ?>
                                     </td>
                                 </tr>
+
+                                <?php if ($cache_adapter == 'apcu' || $cache_backup == 'apcu') { ?>
+                                <tr>
+                                    <td>php-apcu</td>
+                                    <td>
+                                        <?php if (in_array('apcu', get_loaded_extensions())) { ?>
+                                            <span class="badge text-bg-success"><?= __("Installed"); ?></span>
+                                        <?php } else { ?>
+                                            <span class="badge text-bg-danger"><?= __("Not Installed"); ?></span>
+                                        <?php } ?>
+                                    </td>
+                                </tr>
+                                <?php } ?>
+
+                                <?php if ($cache_adapter == 'redis' || $cache_backup == 'redis') { ?>
+                                <tr>
+                                    <td>php-redis</td>
+                                    <td>
+                                        <?php if (in_array('redis', get_loaded_extensions())) { ?>
+                                            <span class="badge text-bg-success"><?= __("Installed"); ?></span>
+                                        <?php } else { ?>
+                                            <span class="badge text-bg-danger"><?= __("Not Installed"); ?></span>
+                                        <?php } ?>
+                                    </td>
+                                </tr>
+                                <?php } ?>
+
+                                <?php if ($cache_adapter == 'memcached' || $cache_backup == 'memcached') { ?>
+                                <tr>
+                                    <td>php-memcached</td>
+                                    <td>
+                                        <?php if (in_array('memcached', get_loaded_extensions())) { ?>
+                                            <span class="badge text-bg-success"><?= __("Installed"); ?></span>
+                                        <?php } else { ?>
+                                            <span class="badge text-bg-danger"><?= __("Not Installed"); ?></span>
+                                        <?php } ?>
+                                    </td>
+                                </tr>
+                                <?php } ?>
                             </table>
                         </div>
                         <div class="col">
@@ -433,6 +472,8 @@
                                         <span class="badge text-bg-primary"><?php echo $cache_backup; ?></span>
                                         <?php if ($cache_backup == $active_adapter) { ?>
                                             <span class="badge text-bg-success"><?= __("Active"); ?></span>
+                                        <?php } else if ($active_adapter == 'dummy') { ?>
+                                            <span class="badge text-bg-danger"><?= __("Failed"); ?></span>
                                         <?php } ?>
                                     </td>
                                 </tr>
@@ -445,15 +486,6 @@
                                     <td><code><?php echo $cache_key_prefix; ?></code></td>
                                 </tr>
                             </table>
-                            <?php if ($using_backup) { ?>
-                                <div class="alert alert-danger mt-2 mb-0" role="alert">
-                                    <?= __("Cache is currently using the backup adapter because the primary is unavailable."); ?>
-                                </div>
-                            <?php } else { ?>
-                                <div class="alert alert-success mt-2 mb-0" role="alert">
-                                    <?= __("Cache is working properly. Everything okay!"); ?>
-                                </div>
-                            <?php } ?>
                         </div>
                         <div class="col-md-6">
                             <p><u><?= __("Cache Details"); ?></u></p>
@@ -472,6 +504,21 @@
                                 </tr>
                             </table>
                         </div>
+                        <div class="ms-2 me-2">
+                            <?php if (!$using_backup) { ?>
+                                <div class="alert alert-success mt-2 mb-0" role="alert">
+                                    <?= __("Cache is working properly. Everything okay!"); ?>
+                                </div>
+                            <?php } else if ($active_adapter !== 'dummy') { ?>
+                                <div class="alert alert-danger mt-2 mb-0" role="alert">
+                                    <?= __("Cache is currently using the backup adapter because the primary is unavailable. Check your file permissions, php-extensions and/or if you are using redis/memcached your network connection to the services."); ?>
+                                </div>
+                            <?php } else { ?>
+                                <div class="alert alert-danger mt-2 mb-0" role="alert">
+                                    <?= __("Cache does not work! Currently the system is using a %s adapter. Check your file permissions, php-extensions and/or if you are using redis/memcached your network connection to the services. You can continue using Wavelog, but no values will be cached (which is bad).", "'dummy'"); ?>
+                                </div>
+                            <?php } ?>
+                        </div>
                     </div>
                     <div class="border-top pt-3 mt-3">
                         <div class="row">

From 03cb2abc2c33fea14f1726c0f08c110071040d15 Mon Sep 17 00:00:00 2001
From: Fabian Berg <fabian.berg@hb9hil.org>
Date: Mon, 23 Feb 2026 07:07:26 +0100
Subject: [PATCH 3/3] strtolower complete

Co-authored-by: Joerg (DJ7NT) <int2001@users.noreply.github.com>
---
 application/controllers/Debug.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/application/controllers/Debug.php b/application/controllers/Debug.php
index 7a90bd50a..825342704 100644
--- a/application/controllers/Debug.php
+++ b/application/controllers/Debug.php
@@ -110,7 +110,7 @@ class Debug extends CI_Controller
 		$data['cache_available_adapters'] = $cache_info['adapters'];
 		$data['cache_path'] = $cache_info['config']['cache_path'] ?: 'application/cache';
 		$data['cache_adapter'] = strtolower($cache_info['config']['cache_adapter'] ?? 'file');
-		$data['cache_backup'] = strtolower($cache_info['config']['cache_backup']) ?? 'file';
+		$data['cache_backup'] = strtolower($cache_info['config']['cache_backup'] ?? 'file');
 		$data['cache_key_prefix'] = $cache_info['config']['cache_key_prefix'] ?: __("(empty)");
 		$data['active_adapter'] = strtolower($cache_info['active']['adapter'] ?? ($cache_info['config']['cache_adapter'] ?? 'file'));
 		$data['using_backup'] = !empty($cache_info['active']['using_backup']);