Locking

Ultimate Cron has its own locking backend in order to support persistent and unlockable locks across requests.

By default it uses the database to store the locks. This can be changed by overriding which class to use for locking.

Currently only database and memcache is supported.

To use memcache instead of database, add the following to settings.php:

$conf['ultimate_cron_class_lock'] = 'UltimateCronLockMemcache';