refs https://github.com/TryGhost/Toolbox/issues/410
- The 'private' value in 'Cache-Control' response header for all errors made it impossible for shared caches (e.g.: Fastly, Cloudflare) to cache 404 responses efficiently.
- The change substitutes 'max-age=0' which should not effect the browser cache behavior but would allow shared caches to process such requests efficiently.
- A more loose caching logic only applies to 404 responses from GET requests that are not user-specific (non-authenticated, non-cookie containing requests)
closes https://github.com/TryGhost/Toolbox/issues/372
- The admin assets are served with a unique hash depending on the build with a year-long "max-age" value in the response cache-control header. The client browsers still do send 'If-None-Match' requests when there is a hard-refresh on the client side. There's no need for 'If-None-Match' requests though!
- With 'immutable' value in the cache-control header, the browser caches are treating responses as "hard-fresh" without sending redundant requests.
- For more about 'immutable' value read https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#immutable
refs https://github.com/TryGhost/Toolbox/issues/354
- this commit turns the Ghost repo into a monorepo so we can bring our
internal packages back in, which makes life easier when working on
Ghost
