- redirect avatar image requests to the rails_blob_url, instead of
streaming them through the web app
- use a thumbnail variant for avatar images
- only put avatar initials behind the stale? check (not the image
redirect, which would result in browsers rendering broken images when
an avatar is changed, until max-age expires)
Locally, having stale_while_revalidate works great, but in production when we are behind CloudFlare, this results in an old image being shown after you upload a new one
See: https://app.fizzy.do/5986089/cards/2978
Mike Dalessio