backend_clean_locks
backend_clean_locks is a Magento 2 cron job declared by the Backend module in the Default group. It runs 20 2 * * * (20 2 * * *) and dispatches Magento\Backend\Cron\CleanLocks::execute() on every tick.
Wiring
- Group
- Default (default)
- Module
- Backend (magento/module-backend)
- Schedule
- 20 2 * * *
- Frequency
- 20 2 * * *
- Handler
- Magento\Backend\Cron\CleanLocks::execute()
- Source file
- vendor/magento/module-backend/etc/crontab.xml
Run the backend_clean_locks cron job manually
Magento doesn't have a per-job CLI invocation — the smallest unit is a group. The command below runs every job in the default group whose schedule is due. The --bootstrap flag bypasses the lock-file check so the job runs even when the system cron is configured.
php bin/magento cron:run --group=default --bootstrap=standaloneProcessStarted=1Define your own job like this one
Want a job that fires on the same cadence in your own module? Drop these two files in — adjust the vendor/module namespace, the job name, and the body of execute.
1. etc/crontab.xml
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Cron:etc/crontab.xsd">
<group id="default">
<job name="vendor_module_backend_clean_locks_clone"
instance="Vendor\Module\Cron\BackendCleanLocks"
method="execute">
<schedule>20 2 * * *</schedule>
</job>
</group>
</config>2. Cron handler class
<?php
declare(strict_types=1);
namespace Vendor\Module\Cron;
use Psr\Log\LoggerInterface;
class BackendCleanLocks
{
public function __construct(
private readonly LoggerInterface $logger,
) {
}
public function execute(): void
{
$this->logger->info('backend_clean_locks cron tick');
// Your scheduled work here. Keep this short — long jobs
// should enqueue work onto the message queue rather than
// running inline in the cron tick.
}
}Need a full module scaffolded around this cron job? Module Generator wires the crontab.xml, handler class, and module registration for you.
Other cron jobs in Backend
Sibling cron jobs declared by the same module. See all Backend cron jobs →
Cron handlers often dispatch Magento 2 events on each tick — observers bound to those events run as part of the scheduled work. The CLI Reference covers cron:run, cron:install, and the rest of the cron:* namespace.
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