Content negotiation is it just for taste or do you have some other reasons?
I find one good use case for them when a browser can make good use case with a SSE whilst another client just needs a regular _json_ response
I find one good use case for them when a browser can make good use case with a SSE whilst another client just needs a regular _json_ response
Cloudflare doesn't support it for caching (more specific Cloudflare doesn't obey the Vary: cache header).