General Purpose URL Purge
For a page that should 404. This will purge the page via Fastly.
Use the full path (<%= app_url("xyz") %>) or the relative path: (/xyz)
<%= form_tag bust_cache_internal_tools_path do %>
<% end %>
Bust Cache For Specific Content
This clears both the Rails cache & the Fastly cache.
<%= form_tag bust_cache_internal_tools_path do %>
<% end %>
<%= form_tag bust_cache_internal_tools_path do %>
<% end %>