RSS in the large is a nightmare. My agent YOShInOn lives on the wrong side of an ADSL connection and has all its RSS fetching done by
which I like operationally. I'm following about 110 RSS feeds which cost 10 cents/month each. I like having a simple AWS Lambda that puts the notifications in SQS and then fetching them at my convenience later. It's a steal for a feed from MDPI that has 1000+ papers a day or arXiv or The Guardian but not affordable to follow 2000 independent blogs which I would like to do. The poll and poll and poll some more and poll again and maybe poll too fast and waste resources and other times poll too slow and not only get content late but miss it entirely situation is just not cool. I could write an RSS poller but it would be slowing down my internet connection or adding to my cloud bills and would need maintenance.