Of course 304, ungh. The reason 304 gets used more often than 301 even for essentially permanent redirects is because of browser caching... If you allow editing

Of course 304, ungh. The reason 304 gets used more often than 301 even for essentially permanent redirects is because of browser caching... If you allow editing a redirect, then you might want to change future requests. Of course, many URL shorteners don't allow edits. As far as I know, some browsers don't cache-invalidate 301s. Haven't investigated recently, maybe there's an HTTP2 solution for this, or proper use of headers, or something.