Recently I wanted to create a live status page for wikibase.cloud, that also tracking the status of the various services and response times, so that people in the Telegram group might be able to try and correlate their experiences (possibly slow behaviour) with what was seen by others in other locations on other sites, without needing to message in the Telegram group.
In a way, this could be seen as an iteration on the current status page for the service, which is maintained as a static site on Github, making use of cState, a static status page.
I initially chose to experiment with Cloudflare Workers to do the minutely checks, after looking around at the current offerings for free online code running (thinking Heroku style etc).