I really appreciate that you’ve posted this.
The article says:
You definitely don’t need to ping more than once every 10 minutes or so — more than that just adds load to the system but doesn’t make any difference for your app.
But the technical restrictions page https://glitch.com/help/restrictions/ says:
Apps sleep after 5 minutes if they are not used, and those running for more than 12 hours are stopped.
which would mean there would be a difference between pinging every 5 minutes and pinging every 10 minutes. At 10 minutes, the project would have been stopped for 5 minutes already.
It’s a separate issue if you’re telling free users they’re limited to 50% uptime (although I personally think that’s not what the post is intended to do). But as it’s written, it’s inconsistent.
update: the post was corrected to say 5 minutes