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by derefr 3327 days ago
> HTTP 301 Moved Permanently is the out of band control channel.

True, but requires you to be able to set response codes on the server. I can't make my Github Pages site, or my Tumblr blog, or my S3 bucket, emit a 301. And those are the sorts of things that RSS was designed for: static sites that can't just, say, tell their backend to email people on update. You'd think that, knowing that, RSS et al would have been designed with in-band, rather than out-of-band, control.

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