Writing
Four things worth knowing before you pay anyone
Written to be useful on their own. Two of them argue you might not need us.
When your uptime monitor goes down with your server
Shared fate is the one failure mode that produces no alert at all. It is worth ten minutes to find out whether you have it.
Uptime Kuma vs hosted monitoring, an honest comparison
We sell hosted monitoring, so read this with that in mind. It is still true that most people asking this question should self-host.
How to monitor a cron job with a heartbeat URL
A cron job that stops running produces no output, no error and no signal. Inverting the check is the only way to hear about it.
SSL certificate expiry: how to stop being surprised by it
Everyone has automatic renewal now, and certificates still expire. The gap is almost never the renewal itself.