Use it for questions about performing routine and other maintenance tasks in Drupal.
In Drupal, setting cron tasks means setting up periodic tasks for housekeeping activities, which can include:
- Indexing new content
- Cleaning out expired data from caches
- Taking database backups
- Updating content from RSS feeds.
For a module, adding maintenance tasks means implementing
hook_cron(), which is the hook invoked by the Drupal cron system when executing cron tasks.