Ask HN: Need a simple HTTP service that allows basic string persistence

I am building a simple bot. The bot scrapes an RSS feed. The only persistence I need is the date time of the most recent item on the RSS feed. I dont want to have to spin up a DB.

What would be great is a service that allows something like the following simple-storge.com/account-id?data=the-date-i-want-to-store

Anyone know of anything like this that exists?

Any help greatly appreciated.