Fix issue with large number of identities

Plugin/Magento/Catalog/Block/Product/ListProduct.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * Copyright © Magefan (support@magefan.com). All rights reserved.
+ * See LICENSE.txt for license details (http://opensource.org/licenses/osl-3.0.php).
+ */
+
+namespace Magefan\Catalog\Plugin\Magento\Catalog\Block\Product;
+
+/**
+ * Class ListProduct
+ * @package Magefan\Catalog\Plugin\Magento\Catalog\Block\Product
+ */
+class ListProduct
+{
+    /**
+     *  Max. dentities count
+     */
+    const MAX_COUNT = 400;
+
+    /**
+     * Slice identities.
+     * @param \Magento\Catalog\Block\Product\ListProduct $subject
+     * @param array $identities
+     */
+    public function afterGetIdentities(
+        \Magento\Catalog\Block\Product\ListProduct $subject,
+        $identities
+    ) {
+        if (count($identities) > self::MAX_COUNT) {
+            $identities = array_slice($identities, 0, self::MAX_COUNT);
+            $category = $subject->getLayer()->getCurrentCategory();
+            if ($category) {
+                $identities[] =  \Magento\Catalog\Model\Product::CACHE_PRODUCT_CATEGORY_TAG . '_' . $category->getId();
+            }
+        }
+
+        return $identities;
+    }
+}

composer.json

@@ -1,11 +1,8 @@
 {
     "name": "magefan/module-catalog",
     "description": "Fixes for magento issues in catalog",
-    "require": {
-        "php": "~5.6.5 || >=7.0"
-    },
     "type": "magento2-module",
-    "version": "1.0.1",
+    "version": "1.0.2",
     "license": [
         "OSL-3.0",
         "AFL-3.0"

etc/di.xml

@@ -9,4 +9,7 @@
 	<type name="Magento\Catalog\Model\Template\Filter">
 		<plugin disabled="false" name="Magefan_Catalog_Plugin_Magento_Catalog_Model_Template_Filter" sortOrder="10" type="Magefan\Catalog\Plugin\Magento\Catalog\Model\Template\Filter"/>
 	</type>
+	<type name="Magento\Catalog\Block\Product\ListProduct">
+		<plugin disabled="false" name="Magefan_Catalog_Plugin_Magento_Catalog_Block_Product_ListProduct" sortOrder="10" type="Magefan\Catalog\Plugin\Magento\Catalog\Block\Product\ListProduct"/>
+	</type>
 </config>

etc/module.xml

@@ -6,5 +6,5 @@
  */
  -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
-	<module name="Magefan_Catalog" setup_version="1.0.1"/>
+	<module name="Magefan_Catalog" setup_version="1.0.2"/>
 </config>