> 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.

So, open a local file, overwriting any old contents, and write out the date and time of the most recent item retrieved when done.

Then, before starting the next fetch, open the file and read in the saved date/time to use to determine which new items to fetch.