[krainboltgreene]

> Everything else is line noise.

It's always weird to see this type of thing on HN. How anyone can call the way the web works "line noise" is baffling to me.

[jerf]

Fundamentals vs. changing tech. "Idempotency" as a concept is fundamental. Which header means what for some cache layer is not. REST unavoidably has a lot of things in it that are changing tech. (Nominally, it has a lot of fundamentals in it too, but per the other REST discussion on the homepage, which fundamentals it encompasses seems to vary on a person-by-person basis.)

[krainboltgreene]

Most of the REST understanding is basically "how do distributed caches work?".

[heavenlyhash]

Thanks, said it better than I could.