Hey HN, After building OnlineOrNot's uptime check system (handles websites, APIs and web apps), I wanted an independent system that could verify that the uptim

Hey HN, After building OnlineOrNot's uptime check system (handles websites, APIs and web apps), I wanted an independent system that could verify that the uptime check system actually runs when I expect it to (every 15 seconds). So I built Cron Job Monitoring for OnlineOrNot. It's relatively simple to setup too: you give your check a name, OnlineOrNot gives you a https://oonchk.com/ https://oonchk.com/ URL, and you curl that URL every time your cron job runs. For example: copy_backups_to_s3 && curl https://oonchk.com/xxxxx https://oonchk.com/xxxxx It supports all the same alerts as uptime checks (email, SMS, Slack, Discord, Webhooks, PagerDuty, OpsGenie, Spike.sh, Grafana OnCall).