how reindex and flush cache via code in magento 2?

Question

How can reindex and then flush cache magento in code instead command line?

Answer 1

indexer:reindex

CMD:

php bin/magento indexer:reindex //for all
php bin/magento indexer:reindex catalog_category_product //for specific id

Using DI

/**
* @var \Magento\Indexer\Model\IndexerFactory
*/
protected $_indexerFactory;

/**
* @var \Magento\Indexer\Model\Indexer\CollectionFactory
*/
protected $_indexerCollectionFactory;
    
public function __construct(
    \Magento\Indexer\Model\IndexerFactory $indexerFactory,
    \Magento\Indexer\Model\Indexer\CollectionFactory $indexerCollectionFactory
){
    $this->_indexerFactory = $indexerFactory;
    $this->_indexerCollectionFactory = $indexerCollectionFactory;
}

// custom function for reindexing
public function reIndexing(){
    $indexerCollection = $this->_indexerCollectionFactory->create();
    $allIds = $indexerCollection->getAllIds();

    foreach ($allIds as $id) {
        $indexer = $this->_indexerFactory->create()->load($id);
        //$indexer->reindexRow($id); // or you can use reindexRow according to your need
        $indexer->reindexAll(); // this reindexes all
    }
}

or by using object manager

$obj = \Magento\Framework\App\ObjectManager::getInstance();
$indexerCollectionFactory = $obj->get("\Magento\Indexer\Model\Indexer\CollectionFactory");
$indexerFactory = $obj->get("\Magento\Indexer\Model\IndexerFactory");

// custom function for reindexing
public function reIndexing(){
    $indexerCollection = $indexerCollectionFactory->create();
    $allIds = $indexerCollection->getAllIds();

    foreach ($allIds as $id) {
        $indexer = $indexerFactory->create()->load($id);
        //$indexer->reindexRow($id); // or you can use reindexRow according to your need
        $indexer->reindexAll(); // this reindexes all
    }
}

Cache flush/Clean:

CMD:

php bin/magento cache:clean
php bin/magento cache:flush

Using DI:

public function __construct(
    Context $context,
    \Magento\Framework\App\Cache\TypeListInterface $cacheTypeList,
    \Magento\Framework\App\Cache\Frontend\Pool $cacheFrontendPool
) {
    parent::__construct($context);
    $this->_cacheTypeList = $cacheTypeList;
    $this->_cacheFrontendPool = $cacheFrontendPool;
}


$types = array('config','layout','block_html','collections','reflection','db_ddl','eav','config_integration','config_integration_api','full_page','translate','config_webservice');
foreach ($types as $type) {
    $this->_cacheTypeList->cleanType($type);
}
foreach ($this->_cacheFrontendPool as $cacheFrontend) {
    $cacheFrontend->getBackend()->clean();
}

Using ObjectManager:

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();

try{
    $_cacheTypeList = $objectManager->create('Magento\Framework\App\Cache\TypeListInterface');
    $_cacheFrontendPool = $objectManager->create('Magento\Framework\App\Cache\Frontend\Pool');
    $types = array('config','layout','block_html','collections','reflection','db_ddl','eav','config_integration','config_integration_api','full_page','translate','config_webservice');
    foreach ($types as $type) {
        $_cacheTypeList->cleanType($type);
    }
    foreach ($_cacheFrontendPool as $cacheFrontend) {
        $cacheFrontend->getBackend()->clean();
    }
}catch(Exception $e){
    echo $msg = 'Error : '.$e->getMessage();die();
}

for more details: flush cache and reindexing programatically in magento 2

Answer 2

Every CLI command directly maps to a command class in the Magento source code. That makes it pretty easy to track down how Magento is doing it--just search for the command.

cache:flush

Magento\Backend\Console\Command\CacheFlushCommand calls:

    $this->eventManager->dispatch('adminhtml_cache_flush_all');
    $this->cacheManager->flush($cacheTypes);

$this->cacheManager is Magento\Framework\App\Cache\Manager
$this->eventManager is Magento\Framework\Event\ManagerInterface

...so you can inject those two classes into yours, and then call the methods.

indexer:reindex

Magento\Indexer\Console\Command\IndexerReindexCommand calls equivalent to:

    $indexers = $this->indexerCollectionFactory->create()->getItems();
    foreach ($indexers as $indexer) {
        $indexer->reindexAll();
    }

...with $this->indexerCollectionFactory being an instance of Magento\Indexer\Model\Indexer\CollectionFactory.

Answer 3

I believe to flush the cache you should be able to do one of these

Mage::app()->cleanCache()

or

Mage::app()->getCacheInstance()->flush(); 

To programmatically reindex you need to initialize the index factory then iterate through each index.

/**
* @var \Magento\Indexer\Model\IndexerFactory
*/
protected $indexerFactory;

public function __construct(
    \Magento\Indexer\Model\IndexerFactory $indexerFactory
) {
    $this->indexerFactory = $indexerFactory;
}

Then you require a function to go through each indexID in the array

foreach ($indexerIds as $indexerId) {
    $indexer = $this->indexerFactory->create();
    $indexer->load($indexerId);
    $indexer->reindexAll();
}

There is a module there that may be of use if you don't want to create your own: https://github.com/sohelrana09/magento2-module-product-indexer

Answer 4

Please run the below code from magento root folder under any file name.

Ex - yourmagentorootpath/filname.php

<?php
    $command = 'php bin/magento indexer:reindex && php bin/magento cache:flush';
    echo '<pre>' . shell_exec($command) . '</pre>';
?>