> Anything that has updates and doesn't need to be an instant notification. I wonder if there's an easy/obvious way to enhance RSS with instant (or near-instan

> Anything that has updates and doesn't need to be an instant notification. I wonder if there's an easy/obvious way to enhance RSS with instant (or near-instant) notification capability. Perhaps HTTP long polling/Websocket? For small setups, it wouldn't scale/cache as easily as "check this URL every hour, and remember to include ETag/If-Modified-Since", so perhaps for public feeds it could be done via a specialized aggregator / caching proxy network? Maybe model the API after Pushover? <https://pushover.net/api/client#websocket https://pushover.net/api/client#websocket> Use cases is any kind of feed that can update in very short intervals (minutes), or benefits from quick round-trip times, but the exact update frequency can be extremely irregular. For example status alerts, social media posts, blog/forum comments, security updates.