diff --git a/.github/phpstan.neon b/.github/phpstan.neon
index c6dd2eaed7d..cc2e2ab76b8 100644
--- a/.github/phpstan.neon
+++ b/.github/phpstan.neon
@@ -43,7 +43,6 @@ parameters:
          - %currentWorkingDirectory%/app/code/core/Mage/Newsletter
          - %currentWorkingDirectory%/app/code/core/Mage/Oauth
          - %currentWorkingDirectory%/app/code/core/Mage/Page
-         - %currentWorkingDirectory%/app/code/core/Mage/PageCache
          - %currentWorkingDirectory%/app/code/core/Mage/Paygate
          - %currentWorkingDirectory%/app/code/core/Mage/Payment
          - %currentWorkingDirectory%/app/code/core/Mage/Paypal
diff --git a/README.md b/README.md
index 772042be952..19506283a78 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,7 @@ Do not use 20.x.x if you need IE support.
 - possibility to disable global search in backend #1532
 - reduce needless saves by avoiding setting `_hasDataChanges` flag #2066
 - removed support for `global/sales/old_fields_map` defined in XML #921
+- removed Mage_PageCache module #2258
 - removed lib/flex containing unused ActionScript "file uploader" files #2271
 
 For full list of changes, you can [compare tags](https://github.com/OpenMage/magento-lts/compare/1.9.4.x...20.0).
diff --git a/app/code/core/Mage/PageCache/Block/Adminhtml/Cache/Additional.php b/app/code/core/Mage/PageCache/Block/Adminhtml/Cache/Additional.php
deleted file mode 100644
index d2438e1bd2e..00000000000
--- a/app/code/core/Mage/PageCache/Block/Adminhtml/Cache/Additional.php
+++ /dev/null
@@ -1,55 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Open Software License (OSL 3.0)
- * that is bundled with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/osl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
- */
-
-/**
- * System cache management additional block
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @author      Magento Core Team <core@magentocommerce.com>
- */
-class Mage_PageCache_Block_Adminhtml_Cache_Additional extends Mage_Adminhtml_Block_Template
-{
-    /**
-     * Get clean cache url
-     *
-     * @return string
-     */
-    public function getCleanExternalCacheUrl()
-    {
-        return $this->getUrl('*/pageCache/clean');
-    }
-
-    /**
-     * Check if block can be displayed
-     *
-     * @return bool
-     */
-    public function canShowButton()
-    {
-        return Mage::helper('pagecache')->isEnabled() && Mage::getSingleton('admin/session')->isAllowed('page_cache');
-    }
-}
diff --git a/app/code/core/Mage/PageCache/Helper/Data.php b/app/code/core/Mage/PageCache/Helper/Data.php
deleted file mode 100644
index 384c5c0885e..00000000000
--- a/app/code/core/Mage/PageCache/Helper/Data.php
+++ /dev/null
@@ -1,122 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Open Software License (OSL 3.0)
- * that is bundled with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/osl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
- */
-
-/**
- * Page cache data helper
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @author      Magento Core Team <core@magentocommerce.com>
- */
-class Mage_PageCache_Helper_Data extends Mage_Core_Helper_Abstract
-{
-    /**
-     * Pathes to external cache config options
-     */
-    const XML_PATH_EXTERNAL_CACHE_ENABLED  = 'system/external_page_cache/enabled';
-    const XML_PATH_EXTERNAL_CACHE_LIFETIME = 'system/external_page_cache/cookie_lifetime';
-    const XML_PATH_EXTERNAL_CACHE_CONTROL  = 'system/external_page_cache/control';
-
-    /**
-     * Path to external cache controls
-     */
-    const XML_PATH_EXTERNAL_CACHE_CONTROLS = 'global/external_cache/controls';
-
-    /**
-     * Cookie name for disabling external caching
-     *
-     * @var string
-     */
-    const NO_CACHE_COOKIE = 'external_no_cache';
-
-    /**
-     * Check whether external cache is enabled
-     *
-     * @return bool
-     */
-    public function isEnabled()
-    {
-        return (bool)Mage::getStoreConfig(self::XML_PATH_EXTERNAL_CACHE_ENABLED);
-    }
-
-    /**
-     * Return all available external cache controls
-     *
-     * @return array
-     */
-    public function getCacheControls()
-    {
-        $controls = Mage::app()->getConfig()->getNode(self::XML_PATH_EXTERNAL_CACHE_CONTROLS);
-        return $controls->asCanonicalArray();
-    }
-
-    /**
-     * Initialize proper external cache control model
-     *
-     * @throws Mage_Core_Exception
-     * @return Mage_PageCache_Model_Control_Interface
-     */
-    public function getCacheControlInstance()
-    {
-        $usedControl = Mage::getStoreConfig(self::XML_PATH_EXTERNAL_CACHE_CONTROL);
-        if ($usedControl) {
-            foreach ($this->getCacheControls() as $control => $info) {
-                if ($control == $usedControl && !empty($info['class'])) {
-                    return Mage::getSingleton($info['class']);
-                }
-            }
-        }
-        Mage::throwException($this->__('Failed to load external cache control'));
-    }
-
-    /**
-     * Disable caching on external storage side by setting special cookie
-     *
-     * @return void
-     */
-    public function setNoCacheCookie()
-    {
-        $cookie   = Mage::getSingleton('core/cookie');
-        $lifetime = Mage::getStoreConfig(self::XML_PATH_EXTERNAL_CACHE_LIFETIME);
-        $noCache  = $cookie->get(self::NO_CACHE_COOKIE);
-
-        if ($noCache) {
-            $cookie->renew(self::NO_CACHE_COOKIE, $lifetime);
-        } else {
-            $cookie->set(self::NO_CACHE_COOKIE, 1, $lifetime);
-        }
-    }
-
-    /**
-     * Returns a lifetime of cookie for external cache
-     *
-     * @return string Time in seconds
-     */
-    public function getNoCacheCookieLifetime()
-    {
-        return Mage::getStoreConfig(self::XML_PATH_EXTERNAL_CACHE_LIFETIME);
-    }
-}
diff --git a/app/code/core/Mage/PageCache/Model/Control/Interface.php b/app/code/core/Mage/PageCache/Model/Control/Interface.php
deleted file mode 100644
index 7b2a2568cf3..00000000000
--- a/app/code/core/Mage/PageCache/Model/Control/Interface.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Open Software License (OSL 3.0)
- * that is bundled with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/osl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
- */
-
-/**
- * Page cache control interface
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @author      Magento Core Team <core@magentocommerce.com>
- */
-interface Mage_PageCache_Model_Control_Interface
-{
-    /**
-     * Clean external cache
-     *
-     * @return void
-     */
-    public function clean();
-}
diff --git a/app/code/core/Mage/PageCache/Model/Control/Zend.php b/app/code/core/Mage/PageCache/Model/Control/Zend.php
deleted file mode 100644
index 0b02f9f3549..00000000000
--- a/app/code/core/Mage/PageCache/Model/Control/Zend.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Open Software License (OSL 3.0)
- * that is bundled with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/osl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
- */
-
-/**
- * Zend server page cache control model
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @author      Magento Core Team <core@magentocommerce.com>
- */
-class Mage_PageCache_Model_Control_Zend implements Mage_PageCache_Model_Control_Interface
-{
-    /**
-     * Clean zend server page cache
-     *
-     * @return void
-     */
-    public function clean()
-    {
-        if (extension_loaded('Zend Page Cache') && function_exists('page_cache_remove_all_cached_contents')) {
-            page_cache_remove_all_cached_contents();
-        }
-    }
-}
diff --git a/app/code/core/Mage/PageCache/Model/Observer.php b/app/code/core/Mage/PageCache/Model/Observer.php
deleted file mode 100644
index b4bd1b0090e..00000000000
--- a/app/code/core/Mage/PageCache/Model/Observer.php
+++ /dev/null
@@ -1,97 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Open Software License (OSL 3.0)
- * that is bundled with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/osl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
- */
-
-/**
- * Page cache observer model
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @author      Magento Core Team <core@magentocommerce.com>
- */
-class Mage_PageCache_Model_Observer
-{
-    const XML_NODE_ALLOWED_CACHE = 'frontend/cache/allowed_requests';
-
-    /**
-     * Check if full page cache is enabled
-     *
-     * @return bool
-     */
-    public function isCacheEnabled()
-    {
-        return Mage::helper('pagecache')->isEnabled();
-    }
-
-    /**
-     * Check when cache should be disabled
-     *
-     * @param Varien_Event_Observer $observer
-     * @return $this
-     */
-    public function processPreDispatch(Varien_Event_Observer $observer)
-    {
-        if (!$this->isCacheEnabled()) {
-            return $this;
-        }
-        /** @var Mage_Core_Controller_Front_Action $action */
-        $action = $observer->getEvent()->getControllerAction();
-        $request = $action->getRequest();
-        $needCaching = true;
-
-        if ($request->isPost()) {
-            $needCaching = false;
-        }
-
-        $configuration = Mage::getConfig()->getNode(self::XML_NODE_ALLOWED_CACHE);
-
-        if (!$configuration) {
-            $needCaching = false;
-        }
-
-        $configuration = $configuration->asArray();
-        $module = $request->getModuleName();
-        $controller = $request->getControllerName();
-        $action = $request->getActionName();
-
-        if (!isset($configuration[$module])) {
-            $needCaching = false;
-        }
-
-        if (isset($configuration[$module]['controller']) && $configuration[$module]['controller'] != $controller) {
-            $needCaching = false;
-        }
-
-        if (isset($configuration[$module]['action']) && $configuration[$module]['action'] != $action) {
-            $needCaching = false;
-        }
-
-        if (!$needCaching) {
-            Mage::helper('pagecache')->setNoCacheCookie();
-        }
-
-        return $this;
-    }
-}
diff --git a/app/code/core/Mage/PageCache/Model/System/Config/Source/Controls.php b/app/code/core/Mage/PageCache/Model/System/Config/Source/Controls.php
deleted file mode 100644
index c8d75363e6c..00000000000
--- a/app/code/core/Mage/PageCache/Model/System/Config/Source/Controls.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Open Software License (OSL 3.0)
- * that is bundled with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/osl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
- */
-
-/**
- * Page cache system config source model
- *
- * @category   Mage
- * @package    Mage_PageCache
- * @author     Magento Core Team <core@magentocommerce.com>
- */
-class Mage_PageCache_Model_System_Config_Source_Controls
-{
-    /**
-     * Return array of external cache controls for using as options
-     *
-     * @return array
-     */
-    public function toOptionArray()
-    {
-        $options = array();
-        foreach (Mage::helper('pagecache')->getCacheControls() as $code => $type) {
-            $options[] = array(
-                'value' => $code,
-                'label' => $type['label']
-            );
-        }
-        return $options;
-    }
-}
diff --git a/app/code/core/Mage/PageCache/controllers/Adminhtml/PageCacheController.php b/app/code/core/Mage/PageCache/controllers/Adminhtml/PageCacheController.php
deleted file mode 100644
index 3276f4977a3..00000000000
--- a/app/code/core/Mage/PageCache/controllers/Adminhtml/PageCacheController.php
+++ /dev/null
@@ -1,80 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Open Software License (OSL 3.0)
- * that is bundled with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/osl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
- */
-
-/**
- * Page cache admin controller
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @author      Magento Core Team <core@magentocommerce.com>
- */
-class Mage_PageCache_Adminhtml_PageCacheController extends Mage_Adminhtml_Controller_Action
-{
-    /**
-     * Retrieve session model
-     *
-     * @return Mage_Adminhtml_Model_Session
-     */
-    protected function _getSession()
-    {
-        return Mage::getSingleton('adminhtml/session');
-    }
-
-    /**
-     * Clean external cache action
-     *
-     * @return void
-     */
-    public function cleanAction()
-    {
-        try {
-            if (Mage::helper('pagecache')->isEnabled()) {
-                Mage::helper('pagecache')->getCacheControlInstance()->clean();
-                $this->_getSession()->addSuccess(
-                    Mage::helper('pagecache')->__('The external full page cache has been cleaned.')
-                );
-            }
-        } catch (Mage_Core_Exception $e) {
-            $this->_getSession()->addError($e->getMessage());
-        } catch (Exception $e) {
-            $this->_getSession()->addException(
-                $e,
-                Mage::helper('pagecache')->__('An error occurred while clearing the external full page cache.')
-            );
-        }
-        $this->_redirect('*/cache/index');
-    }
-
-    /**
-     * Check current user permission on resource and privilege
-     *
-     * @return bool
-     */
-    protected function _isAllowed()
-    {
-        return Mage::getSingleton('admin/session')->isAllowed('page_cache');
-    }
-}
diff --git a/app/code/core/Mage/PageCache/etc/adminhtml.xml b/app/code/core/Mage/PageCache/etc/adminhtml.xml
deleted file mode 100644
index d23f8fd07eb..00000000000
--- a/app/code/core/Mage/PageCache/etc/adminhtml.xml
+++ /dev/null
@@ -1,41 +0,0 @@
-<?xml version="1.0"?>
-<!--
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License (AFL 3.0)
- * that is bundled with this package in the file LICENSE_AFL.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/afl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
--->
-<config>
-    <acl>
-        <resources>
-            <admin>
-                <children>
-                    <page_cache translate="title" module="pagecache">
-                        <title>External Page Cache</title>
-                        <sort_order>0</sort_order>
-                    </page_cache>
-                </children>
-            </admin>
-        </resources>
-    </acl>
-</config>
diff --git a/app/code/core/Mage/PageCache/etc/config.xml b/app/code/core/Mage/PageCache/etc/config.xml
deleted file mode 100644
index 16e6eac5529..00000000000
--- a/app/code/core/Mage/PageCache/etc/config.xml
+++ /dev/null
@@ -1,127 +0,0 @@
-<?xml version="1.0"?>
-<!--
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License (AFL 3.0)
- * that is bundled with this package in the file LICENSE_AFL.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/afl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
--->
-<config>
-    <modules>
-        <Mage_PageCache>
-             <version>1.6.0.0</version>
-        </Mage_PageCache>
-    </modules>
-    <global>
-        <models>
-            <pagecache>
-                <class>Mage_PageCache_Model</class>
-            </pagecache>
-        </models>
-        <helpers>
-            <pagecache>
-                <class>Mage_PageCache_Helper</class>
-            </pagecache>
-        </helpers>
-        <blocks>
-            <pagecache>
-                <class>Mage_PageCache_Block</class>
-            </pagecache>
-        </blocks>
-        <external_cache>
-            <controls>
-                <zend_page_cache translate="label" module="pagecache">
-                    <label>Zend Full Page Cache</label>
-                    <class>pagecache/control_zend</class>
-                </zend_page_cache>
-            </controls>
-        </external_cache>
-    </global>
-    <adminhtml>
-        <layout>
-            <updates>
-                <pagecache>
-                    <file>pagecache.xml</file>
-                </pagecache>
-            </updates>
-        </layout>
-        <translate>
-            <modules>
-                <Mage_PageCache>
-                    <files>
-                        <default>Mage_PageCache.csv</default>
-                    </files>
-                </Mage_PageCache>
-            </modules>
-        </translate>
-    </adminhtml>
-    <frontend>
-        <layout>
-            <updates>
-                <pagecache>
-                    <file>pagecache.xml</file>
-                </pagecache>
-            </updates>
-        </layout>
-        <events>
-            <controller_action_predispatch>
-                <observers>
-                    <pagecache>
-                        <class>pagecache/observer</class>
-                        <method>processPreDispatch</method>
-                    </pagecache>
-                </observers>
-            </controller_action_predispatch>
-        </events>
-        <cache>
-            <allowed_requests>
-                <cms/>
-                <catalog>
-                    <category><view/></category>
-                </catalog>
-                <catalog>
-                    <product><view/></product>
-                </catalog>
-            </allowed_requests>
-        </cache>
-    </frontend>
-    <admin>
-        <routers>
-            <adminhtml>
-                <args>
-                    <modules>
-                        <Mage_PageCache before="Mage_Adminhtml">Mage_PageCache_Adminhtml</Mage_PageCache>
-                    </modules>
-                </args>
-            </adminhtml>
-        </routers>
-    </admin>
-    <default>
-        <system>
-            <external_page_cache>
-                <enabled>0</enabled>
-                <control>zend_page_cache</control>
-                <cookie_lifetime>3600</cookie_lifetime>
-            </external_page_cache>
-        </system>
-    </default>
-</config>
diff --git a/app/code/core/Mage/PageCache/etc/system.xml b/app/code/core/Mage/PageCache/etc/system.xml
deleted file mode 100644
index 4fe75a1a031..00000000000
--- a/app/code/core/Mage/PageCache/etc/system.xml
+++ /dev/null
@@ -1,72 +0,0 @@
-<?xml version="1.0"?>
-<!--
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License (AFL 3.0)
- * that is bundled with this package in the file LICENSE_AFL.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/afl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
--->
-<config>
-    <sections>
-        <system>
-            <groups>
-                <external_page_cache translate="label">
-                    <label>External Full Page Cache Settings</label>
-                    <show_in_default>1</show_in_default>
-                    <show_in_website>1</show_in_website>
-                    <show_in_store>1</show_in_store>
-                    <sort_order>500</sort_order>
-                    <fields>
-                        <enabled translate="label">
-                            <label>Enable External Cache</label>
-                            <frontend_type>select</frontend_type>
-                            <source_model>adminhtml/system_config_source_yesno</source_model>
-                            <sort_order>1</sort_order>
-                            <show_in_default>1</show_in_default>
-                            <show_in_website>0</show_in_website>
-                            <show_in_store>0</show_in_store>
-                        </enabled>
-                        <cookie_lifetime translate="label comment">
-                            <label>Cookie Lifetime (seconds)</label>
-                            <sort_order>5</sort_order>
-                            <show_in_default>1</show_in_default>
-                            <show_in_website>0</show_in_website>
-                            <show_in_store>0</show_in_store>
-                            <depends><enabled>1</enabled></depends>
-                            <comment>If empty, default value will be used.</comment>
-                        </cookie_lifetime>
-                        <control translate="label">
-                            <label>External Cache Control</label>
-                            <frontend_type>select</frontend_type>
-                            <source_model>pagecache/system_config_source_controls</source_model>
-                            <sort_order>10</sort_order>
-                            <show_in_default>1</show_in_default>
-                            <show_in_website>0</show_in_website>
-                            <show_in_store>0</show_in_store>
-                            <depends><enabled>1</enabled></depends>
-                        </control>
-                    </fields>
-                </external_page_cache>
-            </groups>
-        </system>
-    </sections>
-</config>
diff --git a/app/design/adminhtml/default/default/layout/pagecache.xml b/app/design/adminhtml/default/default/layout/pagecache.xml
deleted file mode 100644
index 003792008c4..00000000000
--- a/app/design/adminhtml/default/default/layout/pagecache.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0"?>
-<!--
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License (AFL 3.0)
- * that is bundled with this package in the file LICENSE_AFL.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/afl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    design
- * @package     default_default
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
--->
-
-<layout>
-    <adminhtml_cache_index>
-        <reference name="cache.additional">
-            <block type="pagecache/adminhtml_cache_additional" name="page.cache.additional" template = "pagecache/cache/additional.phtml" />
-        </reference>
-    </adminhtml_cache_index>
-</layout>
diff --git a/app/design/adminhtml/default/default/template/pagecache/cache/additional.phtml b/app/design/adminhtml/default/default/template/pagecache/cache/additional.phtml
deleted file mode 100644
index 49286e8d04d..00000000000
--- a/app/design/adminhtml/default/default/template/pagecache/cache/additional.phtml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License (AFL 3.0)
- * that is bundled with this package in the file LICENSE_AFL.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/afl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    design
- * @package     default_default
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
-?>
-
-<?php if ($this->canShowButton()): ?>
-<table class="form-list">
-    <tr>
-        <td class="scope-label">
-            <button onclick="setLocation('<?php echo $this->getCleanExternalCacheUrl()?>')" type="button" class="scalable"><span><?php echo Mage::helper('pagecache')->__('Flush External Page Cache') ?></span></button>
-        </td>
-        <td class="scope-label">
-            <?php echo Mage::helper('pagecache')->__('External full page cache.')?>
-        </td>
-    </tr>
-</table>
-<?php endif ?>
diff --git a/app/design/frontend/base/default/layout/pagecache.xml b/app/design/frontend/base/default/layout/pagecache.xml
deleted file mode 100644
index daf58a2fd4c..00000000000
--- a/app/design/frontend/base/default/layout/pagecache.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0"?>
-<!--
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License (AFL 3.0)
- * that is bundled with this package in the file LICENSE_AFL.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/afl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    design
- * @package     base_default
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
-
--->
-<layout version="0.1.0">
-    <catalog_product_view>
-        <reference name="content">
-            <block type="core/template" name="external.pagecache.cookie" template="pagecache/cookie.phtml"/>
-        </reference>
-    </catalog_product_view>
-</layout>
diff --git a/app/design/frontend/base/default/template/pagecache/cookie.phtml b/app/design/frontend/base/default/template/pagecache/cookie.phtml
deleted file mode 100644
index 1711ff03649..00000000000
--- a/app/design/frontend/base/default/template/pagecache/cookie.phtml
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License (AFL 3.0)
- * that is bundled with this package in the file LICENSE_AFL.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/afl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    design
- * @package     base_default
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
-?>
-
-<script type="text/javascript">
-    var lifetime = <?php echo Mage::helper('pagecache')->getNoCacheCookieLifetime(); ?>;
-    var expireAt = Mage.Cookies.expires;
-    if (lifetime > 0) {
-        expireAt = new Date();
-        expireAt.setTime(expireAt.getTime() + lifetime * 1000);
-    }
-    Mage.Cookies.set('<?php echo Mage_PageCache_Helper_Data::NO_CACHE_COOKIE; ?>', 1, expireAt);
-</script>
diff --git a/app/etc/modules/Mage_PageCache.xml b/app/etc/modules/Mage_PageCache.xml
deleted file mode 100644
index c2d7ad6a002..00000000000
--- a/app/etc/modules/Mage_PageCache.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0"?>
-<!--
-/**
- * Magento
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License (AFL 3.0)
- * that is bundled with this package in the file LICENSE_AFL.txt.
- * It is also available through the world-wide-web at this URL:
- * http://opensource.org/licenses/afl-3.0.php
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@magento.com so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade Magento to newer
- * versions in the future. If you wish to customize Magento for your
- * needs please refer to http://www.magento.com for more information.
- *
- * @category    Mage
- * @package     Mage_PageCache
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
- * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
--->
-<config>
-    <modules>
-        <Mage_PageCache>
-            <active>true</active>
-            <codePool>core</codePool>
-            <depends>
-                <Mage_Core/>
-            </depends>
-        </Mage_PageCache>
-    </modules>
-</config>
diff --git a/app/locale/en_US/Mage_PageCache.csv b/app/locale/en_US/Mage_PageCache.csv
deleted file mode 100644
index 8cf0a18b013..00000000000
--- a/app/locale/en_US/Mage_PageCache.csv
+++ /dev/null
@@ -1,12 +0,0 @@
-"An error occurred while clearing the external full page cache.","An error occurred while clearing the external full page cache."
-"Cookie Lifetime (seconds)","Cookie Lifetime (seconds)"
-"Enable External Cache","Enable External Cache"
-"External Cache Control","External Cache Control"
-"External Full Page Cache Settings","External Full Page Cache Settings"
-"External Page Cache","External Page Cache"
-"External full page cache.","External full page cache."
-"Failed to load external cache control","Failed to load external cache control"
-"Flush External Page Cache","Flush External Page Cache"
-"If empty, default value will be used.","If empty, default value will be used."
-"The external full page cache has been cleaned.","The external full page cache has been cleaned."
-"Zend Full Page Cache","Zend Full Page Cache"