It's a tad confusing. I believe you're totally correct, this is how those headers should behave. > The headers are defined at the http level and with caching l

It's a tad confusing. I believe you're totally correct, this is how those headers should behave. > The headers are defined at the http level and with caching layers in between, the endpoint is free to return the current feed - with both new and seen entries. A lot of feeds behave this way. Especially if it's just a static blog > Are there many servers optimising that to a shorter feed? I've come across a fair few that behave with the semantics I described