$ curl -sI https://zundan-mastodon-staging-pr-17.herokuapp.com/about | grep Etag
Etag: W/"a1fd54c8eb1bc81ae3a5a5cbf4fdc31f"
$ curl -sI https://zundan-mastodon-staging-pr-17.herokuapp.com/about | grep Etag
Etag: W/"c25d6d08fa74c9b54fe3c0860acb13b1"
Etagが変化するのまずいよねたぶん