ENGCOM-4055: 14857: prevent cache drop for frontend caches on sitemap generation #20818

Author: sidolov

app/code/Magento/Robots/Model/Config/Value.php

@@ -3,6 +3,7 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
 namespace Magento\Robots\Model\Config;
 
 use Magento\Framework\App\Cache\TypeListInterface;
@@ -32,12 +33,11 @@ class Value extends ConfigValue implements IdentityInterface
     const CACHE_TAG = 'robots';
 
     /**
-     * Model cache tag for clear cache in after save and after delete
+     * @inheritdoc
      *
-     * @var string
      * @since 100.2.0
      */
-    protected $_cacheTag = true;
+    protected $_cacheTag = [self::CACHE_TAG];
 
     /**
      * @var StoreManagerInterface

app/code/Magento/Sitemap/Model/Sitemap.php

@@ -3,6 +3,7 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
 namespace Magento\Sitemap\Model;
 
 use Magento\Config\Model\Config\Reader\Source\Deployed\DocumentRoot;
@@ -15,6 +16,8 @@
 use Magento\Sitemap\Model\ResourceModel\Sitemap as SitemapResource;
 
 /**
+ * Sitemap model.
+ *
  * @method string getSitemapType()
  * @method \Magento\Sitemap\Model\Sitemap setSitemapType(string $value)
  * @method string getSitemapFilename()
@@ -154,12 +157,11 @@ class Sitemap extends \Magento\Framework\Model\AbstractModel implements \Magento
     protected $dateTime;
 
     /**
-     * Model cache tag for clear cache in after save and after delete
+     * @inheritdoc
      *
-     * @var string
      * @since 100.2.0
      */
-    protected $_cacheTag = true;
+    protected $_cacheTag = [Value::CACHE_TAG];
 
     /**
      * Item resolver