Magento – How to i set auto cache and reindex using cron

To make separate & custom cron job for re-indexing follow below code/steps.

• Add cron job into config.xml as below.
• <crontab> <jobs> <my_cronscript_custom_re_index> <schedule><cron_expr>30 0 * * *</cron_expr></schedule> <run><model>MODULE_NAME/customreindex::runCustomReIndex</model></run> </my_cronscript_custom_re_index> </jobs> </crontab>
• 30 0 * * * this cron will run every mid-night
• Cron model file Customreindex.php
• class MyPackage_MyModule_Model_Customreindex { public function runCustomReIndex() { Mage::app()->getCacheInstance()->flush(); Mage::app()->cleanCache();
$indexCollection = Mage::getModel('index/process')->getCollection(); foreach ($indexCollection as $index) { $index->reindexAll(); }
} }
• Mage::app()->getCacheInstance()->flush(); and Mage::app()->cleanCache(); are to clear cache. You can avoid it if just need to re-index

Magento has a class that specifically handles command line scripts. The Magento bootstrap can be handled via the Shell Abstract script inside of your shell/ folder.

<?php

include_once 'abstract.php';

class JohnG_Shell_Cron extends Mage_Shell_Abstract {

    public function run() {
        $this->_clearindex();
        $this->_clearCache();
    }

    protected function _clearindex() {
        $process = Mage::getModel('index/indexer')->getProcessByCode('catalog_product_flat');
        $process->reindexAll();
    }

    protected function _clearCache() {
        Mage::app()->getCacheInstance()->clean('block_html');
    }
}

Now setup your cron like this:

0 0-23/2 * * * php -f /path/to/your/magento/shell/johngscript.php