App version: 2.3.0-beta2 (state whether from Google Play/F-Droid/Custom built APK)
Problem you may be having, or feature you want:
Pulling RSS feeds and then check if there are new episodes every X time is not very efficient. WebSub has been suggested as an alternative solution, but this also has downsides:
- centralisation (AntennaPod would need its own server that pushes new update info to clients, and thus would collect info (namely: the subscriptions) of its users)
- frequent check-ins (if a client doesn’t tell the server it’s still interested to receive updates every 15 days or so, the server will stop informing the client)
- reliability (if a server dies out, as a client you won’t know and will simply stop receiving new episodes info)
Exploit PodPing, which makes it possible to stop pulling RSS feeds with high frequency, while avoiding the issues that WebSub has. PodPing explained:
Podping is a blockchain based global notification system for podcasting. Feed urls are written by the publisher to the blockchain within seconds of a new episode being published. Anyone can monitor for those updates and only pull a copy of that feed when it shows up on the chain.
AntennaPod could exploit PodPing to
a) check a node via an API to learn which feeds have been updated (and thus which RSS feeds we should poll)
b) pull the relevant RSS feeds and get a full episode info
Podcastindex.org is already getting informed of feed updates by a few bigger podcast hosters, so the system works.
Screenshots / Drawings / Technical details:
Of course not all RSS feeds are on the PodPing network yet, so some feeds would still need to be pinged/pulled as they are now. How we (AntennaPod as client) should know which feeds don’t need to be frequently checked any-more, I currently don’t know. I suppose this info is in the Podcast Index. There is also a proposal to include this info in feeds, as a Podcast Namespace tag: Proposal: Tag to indicate the podcast is "podpinging" · Issue #258 · Podcastindex-org/podcast-namespace · GitHub
Here is explained what podping is:
Podcasting 2.0: Episode 38: Don’t Feed The Monkeys https://mp3s.nashownotes.com/PC20-38-2021-05-21-Final.mp3#t=2123 [00:35:23]