@alice the thing re: deletion and caching is that in "the web" usually your browser or user-agent will cache stuff but it will also expire stuff. and your server can tell it to expire stuff more or less aggressively, using caching headers. but what you can't do is have an http server send a DELETE to an arbitrary web browser or user-agent or client; the DELETE only flows from http client to http server

@alice the lines aren't perfectly clear but they're definitely there