Although the idea is simple, this need is typically satisfied by a free uptime monitor for me. If I need it to stay up, I might as well let somebody monitor for downtime and alert me.
In what use case would you prefer your solution over an uptime monitor? like e.g. https://uptimerobot.com/
In what use case would you prefer your solution over an uptime monitor? like e.g. https://uptimerobot.com/