Cron service

Your site needs no cron at your host. The control center calls scheduled jobs from outside, signed and in small portions.

• It calls https://your-site/cron.php?job=<name>, signed with your site's secret (HMAC-SHA256) and valid for five minutes. Invalid signatures get status 403.
• One call handles a portion of about 20 seconds at most. If the job is not finished, the site answers weiter and the control center calls again right away.
• If the same job is already running, the site answers beschaeftigt and the control center retries.
• Jobs that hit the gateway quota stop as interrupted and continue at the next run.

You change schedules as cron expressions under Site, Cron. Every run is logged. Missed runs of the last six hours are caught up once.

Monitoring: availability check every five minutes, status hourly. Email alerts for repeated cron failures, failed deploys, changed core files and a site that is unreachable twice in a row, with an all clear when fixed.