FEATURE: cache most used SQL queries

app/CMS/Enumerations/ModulesHandlerToId.php

@@ -2,6 +2,7 @@
 namespace App\CMS\Enumerations;
 
 use App\Models\Module;
+use Illuminate\Support\Facades\Cache;
 
 class ModulesHandlerToId extends BaseEnumeration
 {
@@ -12,7 +13,9 @@ class ModulesHandlerToId extends BaseEnumeration
      */
     protected static function init()
     {
-        $modules = Module::all(['handler', 'id']);
+        $modules = Cache::rememberForever('module-handler-to-id-enumeration', function () {
+            return Module::all(['handler', 'id']);
+        });
 
         foreach ($modules as $module) {
             self::push($module->handler, $module->id);

app/CMS/Helpers/CurrentTemplate.php

@@ -6,6 +6,7 @@ use App\Models\Content\Content;
 use App\Models\Module;
 use App\Models\User;
 use Illuminate\Database\QueryException;
+use Illuminate\Support\Facades\Cache;
 
 class CurrentTemplate implements TemplateHandler
 {
@@ -20,16 +21,19 @@ class CurrentTemplate implements TemplateHandler
     public static function get()
     {
         if (!self::$initialized) {
-            try {
-                self::$template = Module::where('is_template', true)
-                                        ->where('enabled', true)
-                                        ->first();
-            } catch (QueryException $e) {
-                throw new \ErrorException('DB not migrated, please, do so!');
-            }
-            if (self::$template) {
-                self::$template->module_settings = json_decode(self::$template->module_settings);
-            }
+                self::$template = Cache::rememberForever('current-template', function () {
+                    $template = Module::where('is_template', true)
+                          ->where('enabled', true)
+                          ->first();
+
+                    // todo remove after adding $casts into Module model
+                    if ($template) {
+                        $template->module_settings = json_decode($template->module_settings);
+                    }
+
+                    return $template;
+                });
+
 
             self::$initialized = true;
         }

app/CMS/Helpers/Settings.php

@@ -3,6 +3,7 @@
 namespace App\CMS\Helpers;
 
 use App\Models\Settings as SettingsModel;
+use Illuminate\Support\Facades\Cache;
 
 /**
  * Class Settings
@@ -76,8 +77,10 @@ class Settings
     private static function init()
     {
         if (!self::$initialized) {
-            $model = new SettingsModel();
-            self::$settings = $model->getAll();
+            self::$settings = Cache::remember('settings', config('cache.settingCacheLifetime'), function () {
+                $model = new SettingsModel();
+                return $model->getAll();
+            });
         }
     }
 }

app/CMS/Helpers/WidgetAreas.php

@@ -2,6 +2,7 @@
 namespace App\CMS\Helpers;
 
 use App\Models\Widgets\WidgetArea;
+use Illuminate\Support\Facades\Cache;
 
 class WidgetAreas
 {
@@ -14,8 +15,9 @@ class WidgetAreas
     protected static function saveRenderedWidgetArea($widgets)
     {
         foreach ($widgets as $widget) {
-            if (!isset(self::$widgetAreas[$widget->widget_area_code]))
+            if (!isset(self::$widgetAreas[$widget->widget_area_code])) {
                 self::$widgetAreas[$widget->widget_area_code] = '';
+            }
 
             self::$widgetAreas[$widget->widget_area_code] .= Widget::render($widget);
         }
@@ -23,9 +25,11 @@ class WidgetAreas
 
     protected static function loadWidgetArea($uniqueCode)
     {
-        $widgetArea = new WidgetArea();
-        $widgets = $widgetArea->getWidgets($uniqueCode)
+        $widgets = Cache::remember('widget-' . $uniqueCode, setting('widgetCacheLifetime', 5), function () use ($uniqueCode) {
+            $widgetArea = new WidgetArea();
+            return $widgetArea->getWidgets($uniqueCode)
                               ->get();
+        });
 
         WidgetArea::where('code', $uniqueCode)
                   ->increment('viewed');
@@ -35,12 +39,15 @@ class WidgetAreas
 
     protected static function initWidgetAreas()
     {
-        if (self::$initialized)
+        if (self::$initialized) {
             return;
+        }
 
-        $widgetArea = new WidgetArea();
-        $widgets = $widgetArea->getWidgets()
+        $widgets = Cache::remember('widgets', setting('widgetCacheLifetime', 5), function () {
+            $widgetArea = new WidgetArea();
+            return $widgetArea->getWidgets()
                               ->get();
+        });
 
         self::saveRenderedWidgetArea($widgets);
         self::$initialized = true;