revised edition

views/templates/admin/configure.tpl

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+ <div class="panel">
+     <div class="panel-heading">
+         <i class="icon-cogs"></i>Memory Cache Statistics
+     </div>
+
+     <div class="row">
+         <div class="col-md-6">
+             <table class="table">
+                 <tbody>
+                     <tr>
+                         <td><strong>Status</strong></td>
+                         <td>{$statusLabel}</td>
+                     </tr>
+                     <tr>
+                         <td><strong>Max Allowed Value Size</strong></td>
+                         <td>{$stats['max_size']} characters</td>
+                     </tr>
+                     <tr>
+                         <td><strong>Total Keys in Cache</strong></td>
+                         <td>{$stats['rows']}</td>
+                     </tr>
+                     <tr>
+                         <td><strong>Expired Keys (Awaiting Prune)</strong></td>
+                         <td>{$stats['expired_rows']}</td>
+                     </tr>
+                     <tr>
+                         <td><strong>Data Memory Used</strong></td>
+                         <td>{$dataMemoryUsed}</td>
+                     </tr>
+                     <tr>
+                         <td><strong>Index Memory Used</strong></td>
+                         <td>{$indexMemoryUsed}</td>
+                     </tr>
+                 </tbody>
+             </table>
+         </div>
+         <div class="col-md-6">
+             <div class="alert alert-info">
+                 <strong>How it works:</strong><br>
+                 This module uses the high-speed MySQL/MariaDB <code>MEMORY</code> engine.
+                 Data is stored entirely in RAM. If your database server reboots, the data is automatically cleared,
+                 but the module will auto-recover and recreate the table schema if necessary.
+             </div>
+
+             <form action="{$currentIndex}" method="post" style="margin-top: 20px;">
+                 <button type="submit" name="submitPruneCache" class="btn btn-default">
+                     <i class="icon-eraser"></i>Prune Expired Keys
+                 </button>
+                 <button type="submit" name="submitFlushCache" class="btn btn-danger pull-right"
+                     onclick="return confirm(\'Are you sure you want to completely flush the cache?\');">
+                     <i class="icon-trash"></i>Flush Entire Cache
+                 </button>
+             </form>
+         </div>
+     </div>
+</div>