Caching the parent structure is the next preemptive thing we can do to help speed up our app. Say we had navigated to our images directory, /images/holiday/summer, and wished to share this with a friend or colleague. We would send them the URL with this in the URL hash and, on page load, they would see the contents. If they then navigated up the tree using the breadcrumb to /images/holiday, for example, they would need to wait for the app to retrieve the contents.
Using the breadcrumb component, we can cache the parent directories and so, on navigating to the holiday folder, the user would be presented instantly with its contents. While the user is then browsing this folder, all of its subfolders are being cached with the previous methods.
To cache the parent folders, we already have a component displaying the path with access to the slugs of all the parent...
